Necessary tools for repairing smartphones. What tools are needed to repair a phone. What should you do first to open a service center?

Are you thinking about how to open a phone repair shop? Detailed instructions, calculation tables and useful tips for you in this article.

♦ Capital investments – 150,000 rubles
♦ Payback – 7–8 months

Mobile phones have long ceased to be luxury items and have become a necessity accessible to everyone. Today, a mobile phone can be found in anyone’s pocket.

Because the price mobile phones- diverse, it is clear that cheap models will break.

Few people, having discovered that their mobile phone is broken, will immediately throw it away and go to the store for another one. Most will first go to a repair shop and pay for the repair.

If you understand the devices of mobile phones, and friends often turn to you about this, then why not think about how to open service center phone repair.

You don’t have to invest a lot of money in launching a startup, and you can earn relatively well each month.

Are there any reasons to open a phone repair center?

This business has many advantages:

Minimal capital investment and the opportunity to save on many stages of starting a business.
If you are a highly qualified specialist (or you have hired such specialists) and are able to fix any breakdown, you can set any prices for your services.
An opportunity to develop your business in the future, for example, to repair laptops, tablets and other equipment.
You can also combine services: repair service + sale of batteries, chargers, accessories for mobile phones, etc.
Minimal monetary risk.
Firstly, you don't have to invest a lot of money in your business.
Secondly, if you earn less than you wanted, you can always cover your workshop by putting up tools for sale.
You don’t have to pay suppliers for unsold goods or sell leftovers for a long time in order to get back at least some of the money invested.
Demand for phone repair services among the population.
No matter how many service centers operate in your city, it always makes sense to open another one.

Are there any reasons not to open a phone repair shop?

If we talk about the shortcomings of this business, then among the most obvious:

high level of competition in this sector;
relatively small monthly income;
business relies on specialists, and if your competitors managed to hire a technician who can easily fix any breakdown, but you don’t have one, then people will visit the competitor’s service center, not yours.

In what cases should you open a phone repair center?

It makes sense to enter this business:

Highly qualified specialists who have been repairing phones, laptops and other equipment for a long time as a hobby or as an employee.

Why not open your own business?

Managers who can make any startup profitable.

If you are looking for a promising idea in which to invest money, then you should think about opening a repair shop.
You just need to find a good specialist and start earning money.

What should you do first to open a service center?

Launching a startup involves completing several mandatory steps at the preparatory stage:

Thinking through all the pros and cons (you must find reinforced concrete arguments why you should open this particular business and not another).
with specific calculations.
Theoretical study of this field of activity.
Search for the main components of your future business: premises, a telephone repairman, if you are going to serve as a manager. Only after this can you begin to register the case.

Two forms of opening a service center

This business is good because it allows entrepreneurs to choose what exactly to open:

Legal service center.

You register as an individual entrepreneur, rent an office with a specific legal address, pay taxes, etc.
This method is suitable for both craftsmen who intend to repair phones themselves, and managers who want to perform only an intermediary function.

Illegal workshop.

Let's say you are good at repairing phones and other equipment.
Friends and acquaintances know this and regularly give you work, agreeing to pay for it.
All repair work can be carried out right at home, and you can search for clients using word of mouth.
This method is not suitable for managers.

Two types of phone repair service center

All workshops are divided into two types:

You cooperate with a specific manufacturer, order spare parts from him, report on the work done, perform warranty service phones, etc.

You are not accountable to anyone and undertake to repair any phone models that clients bring to you.
In this case, difficulties may arise when ordering spare parts, and there will be no one to get advice from.

How to advertise a phone repair service center?

Such a modest business does not require a large advertising campaign.

All you need is:

distribute business cards to all your potential and existing clients;
provide information on your page in in social networks that you have opened a workshop, and ask your friends to spread this information;
register on a local forum and tell the residents of your city that such a service is now available to them.

If you can fix most cell phone breakdowns and charge a reasonable price for it, then you can be sure that you will soon have a lot of customers.

Schedule for opening a phone repair service center

The preparatory stage of opening a workshop will not take you too much time.

In fact, the most difficult thing that awaits you is the registration procedure, which, due to bureaucratic delays, can last for several months.

If you can speed it up, then you can rent and arrange the premises and purchase tools quickly enough.

Things will go even faster if you don’t need a phone repairman, but you are going to perform his functions yourself.

Stage	Jan.	Feb.	March	Apr.
Registration and obtaining necessary permits
Rent of premises and repairs therein (if necessary)
Purchasing tools for craftsmen’s work
Advertising campaign
Opening

Business plan for opening a phone repair service center

To understand how much money you need to start a service center and what steps you need to take care of, check out this business plan.

Let's say you decide to open a workshop in one of the big cities.

You are going to repair the equipment yourself, so you will not hire a technician.

Registration

Interesting fact:
The most popular phone was and remains the Nokia 1100, which was owned by 250,000,000 people. The phone has been available in all stores since 2003.

It is better to start the registration procedure not immediately after the idea arises, but to work illegally for a while.

And only when you realize that you are able to bring broken phones back to life and you have formed at least a small client base, you can submit documents for registration.

Room

To open a repair shop, you do not need a large premises. A room of 20–30 square meters is enough. meters.

Open your center where it will be easy for customers to find it: in the city center or in a densely populated residential area.

You don’t have to worry about the decor of the room, since clients will be interested in your qualifications, and not the color of the office walls.

If you are going to cooperate with a master on a fee basis, and retain the functions of a manager, then a reasonable step would be to open a business in one of the popular shopping centers in your city.

All you need is a small corner where you can sell spare parts and accessories for phones and accept broken models for repair.

The master will be able to bring already repaired models once a day and pick them up new job. Thus, a specialist will be able to work at home, and you will be able to save on rent and expand the range of services of your business.

Workshop tools and equipment

We remember that our room is small, which means we shouldn’t clutter it with unnecessary furniture.

To work properly, you just need to purchase:

Expense item	Amount (in rub.)
Total:	55,000 rub.
Table	8 000
Chair or work chair	1 500
Table lamp	1 000
Laptop	18 000
Safe	10 000
Telephone set	800
Lockers for changing clothes and storing personal belongings	5 000
Rack or shelf for storing tools and spare parts	3 000
Other	7 700

You will also need a minimum set of tools to perform standard phone repair work.

Expense item	Amount (in rub.)
Total:	35,000 rub.
Soldering station with hair dryer	4 000
Ultrasonic bath	2 000
UFS-3 box + HWK programmer with cable set	6 000
power unit	2 000
Digital oscilloscope	8 000
Vacuum tweezers	1 000
A set of miniature tools (screwdrivers, tweezers, etc.)	5 000
Other	7 000

Staff

In the first stages of work, until you form a client base and promote your business, you can do without staff at all.

If you want, you can hire a part-time cleaner and part-time accountant.

Once your phone repair service center becomes popular, you should consider hiring a sales rep.

How much does it cost to open a phone repair center?

You really don't need huge amounts of money to launch this startup.

It is enough to have 150,000 rubles.

Monthly expenses in this type of business are small and will mainly go towards renting premises, taxes, internet and purchasing tools.

You can easily meet the amount of 30–40,000 rubles.

How much can you earn with a phone repair shop?

It is impossible to name the exact amount.

The earning formula is simple: the more orders you have, the more money you can earn money every month.

Form a reasonable pricing policy, but not at a loss. When telling your client the price, add 100% to the parts you used to fix the phone.

If you serve at least 5 clients a day, your daily revenue will be at least 3,000 rubles.

Even working with two days off a week, you can earn about 60,000 rubles per month.

That is, the net profit is about 20,000 rubles.

At the initial stage, we invested 150,000 rubles. In this situation, they will pay for themselves in 7–8 months.

We also invite you to watch a video about

where to start opening a phone repair service center:

5 tips for those who are planning to open a phone repair shop:

Give realistic time frames for repairs so as not to disappoint the client.
Even taking into account the order of spare parts, the phone repair period should not be more than 14 days.
If you can't handle the volume of orders, hire an assistant.
Be honest with the client: if the phone cannot be repaired, you should be honest about it.
You should have a minimum set of spare parts and tools, but you should not collect too many “in reserve”.
Do not rush to name the price for phone repair.
The breakdown may be more serious than you thought at first glance, and if you decide to charge the client more than you initially quoted, he will decide that you are trying to deceive him.

Now you know, how to open a phone repair shop, and if you have the necessary knowledge and skills, then take a close look at this type of business.

Useful article? Don't miss new ones!
Enter your email and receive new articles by email

Even a novice master will not be able to cope with solving the simplest problems if he does not have certain ones “at hand”. Especially if the specialist plans to restore electronic gadgets and communications equipment. Let’s say right away that cell phones cannot be restored “on the knee”; you will have to incur certain material costs to arrange the workplace. We will not engage in a list of ultra-modern devices; in the framework of the article, we will present only a set of the most necessary things for a professional.

Hand tools

Let's start with the most basic and simple - with classical instruments. In the list we present the main types that you really can’t do without:
1. You will need to purchase. Moreover, flat and cross-shaped options of several “running” sizes will be required. Don't forget to order torx screwdrivers. As for the size, it must comply with standards from T5 to T7. It’s also a good idea to purchase a kit with interchangeable nozzles. In this case, there will definitely be no problems with disassembling the case or other components of the device.
2. When collecting a set of repair tools, do not forget about such an important thing as a scalpel. It is with its help that you can very easily clean tracks and wires. Try not to skimp on the accessory—jags will appear on a budget item pretty quickly.
3. You will definitely need a pair of tweezers. Look for a standard sample and one curved one that will allow you to reach hard-to-reach elements.
4. An eraser pencil, made in the shape of a classic pencil, will definitely come in handy. With its help, it is easy to clean oxidized contact coatings. You will need a little time to tidy up your badly neglected contacts.
5. Don’t be surprised, but experts often use toothbrushes to deal with minor oxides when working with “recessed” smartphone models. Great efficiency can be achieved in combination with a special liquid, called a wash by service specialists.
6. The holder in which the board is firmly fixed greatly facilitates the work process. It is easier for a person to do delicate work when a small fragile element is fixed.

Power supplies

Quite often, visitors bring broken gadgets to service centers in a completely discharged state. Be sure to keep it in stock Charger, capable of charging any battery. In this case, there will be no difficulties when testing the performance of the electronics.

Take care of your order. Often during testing there is an urgent need to power the phone from the power supply in order to track the corresponding operating parameters. This element is also very important if the smartphone battery is completely unusable or absent. Choose a product with the following parameters: output voltage within 0 - 15 Volts, current at least 1 Ampere. It is necessary to order samples equipped with indicators, because only in this case will it be possible to accurately record certain operating parameters. As professional workers at specialized centers advise, preference should be given to devices with dial indicators; they are much easier to read when testing.

Soldering equipment

You will have to spend significant amounts of money on a soldering device, additional tools from this series and related accessories. So, here is a small list of working tools from this series:
1. Be mentally prepared for the fact that the standard one will not save you. You will need to select a special soldering station. Only with its help can you achieve stunningly accurate results when it is necessary to solder chips or when it is necessary to replace filters. Modern hot-air models significantly facilitate the work of the master, thanks to high degree reliability, the service will provide long-term guarantees when performing complex tasks.
2. Experts advise buying BGA stencils; at the same time, you need to stock up on BGA paste. As practice shows, these are the elements that will be required when carrying out particularly delicate work. As for choosing a pasta brand, rely on your preferences. Some find it convenient to work with a thick paste; many masters prefer a more liquid modification.
3. As you can see, not only tools for repairing phones are needed, you should also consider purchasing dozens of “little things”. You will probably need a no-clean flux gel. The substance boils at a very high temperature, so it is indispensable when mounting chips in elements such as BGA packages. Why is the product called no-clean? The fact is that it is characterized by a complete lack of chemical activity after soldering is completed. Accordingly, there is no risk of further damage to components as a result of corrosion. In addition, additional protection against moisture is provided.
4. A convenient addition will be a special braid, which makes it much easier to remove solder. The process of removing excess is greatly simplified and takes less time.
5. Not as a main device, but as an auxiliary device, you will need a regular electric soldering iron with 40W characteristics. It is needed when working with large discrete components that have significant heat dissipation rates. This accessory is indispensable when preparing mounting points for charging connectors and other similar elements.

Magnifying devices

Another expensive purchase will be a microscope. Even a person with excellent eyesight cannot do without it. It is used to view boards, others small parts. With its help, particularly delicate, critical work is performed that requires maximum visual strain. In addition, look for several magnifiers of different powers. They will be a great addition to a stationary device. Sometimes it is more convenient to examine a detail in your hands.

Measuring instruments

Identifying a complex breakdown using experience alone is not at all easy, and sometimes impossible. To achieve the goal, you will need special equipment for telephone repair, which is used to test the functionality of communications. This section presents devices that will help you quickly identify a malfunction:
1. The first most important thing is the multimeter. This is one of the main examples that allows us to identify technical problems. As for the model line, there are no special recommendations here. The main thing you need to focus on when searching for a product is the accuracy of the readings. You can judge this by reading the opinions of real users.
2. It is problematic to restore a sunken smartphone without an ultrasonic bath. No amount of fine, scrupulous cleaning with special products will save the situation! It is quite possible that you will restore the means of communication, but it will not work for very long. Guarantees should be given only if there is a special bath. Thanks to ultrasound vibrations, it is possible to achieve phenomenal results in seemingly hopeless situations. Practice knows many cases when in this way it was possible to restore hopeless “drowned people” for many years. The secret of effectiveness is quite simple - this is how the effects of oxides and the manifestation of sulfations are destroyed. Impeccable board cleaning quality is not difficult to achieve; to do this, you must follow the manufacturer’s standard recommendations.
3. An oscilloscope will provide significant support in solving complex problems. It is capable of measuring and then displaying various types of signals, showing operating amplitudes. In this case, too, there are no special recommendations. The main advice is to try to choose a sample with fairly accurate readings.
4. The most important tool for repairing mobile phones today is regular computer, any laptop. Don't go for high performance, fashionable model. Better spend these funds on diagnostic products. Make sure to install the appropriate software, to make it more convenient to work when flashing phones. It is impossible to foresee all situations, so you will definitely need Internet access to download programs and data.
5. You will need a certain set of programmers; there are a great many of them at the moment. There are universal products designed for communication means of several brands. There are narrowly targeted samples designed to work with a single manufacturer. There is no clear recommendation for choice. Preferences must be taken into account potential clients in the area where the service is located, listen to the opinions of more experienced colleagues.

When choosing the equipment you like, never be in a hurry. Always compare it with other items produced under a different brand. Compare cost, performance, accuracy, ease of use. Don’t be lazy to get acquainted with the responses of consumers who have already formed their own opinion about the capabilities of a particular device. Then the risk of error in the selection process will be significantly reduced.

Hand tools

Power supplies

Quite often, visitors bring broken gadgets to service centers in a completely discharged state. Be sure to have a charger available that can charge any battery. In this case, there will be no difficulties when testing the performance of the electronics.

Soldering equipment

You will have to spend significant amounts of money on a soldering device, additional tools from this series and related accessories. So, here is a small list of working tools from this series:
1. Be mentally prepared for the fact that the standard one will not save you. You will need to select a special soldering station. Only with its help can you achieve stunningly accurate results when it is necessary to solder chips or when it is necessary to replace filters. Modern hot-air models significantly facilitate the work of the master; thanks to the high degree of reliability, the service will provide long-term guarantees when performing complex tasks.
2. Experts advise buying BGA stencils; at the same time, you need to stock up on BGA paste. As practice shows, these are the elements that will be required when carrying out particularly delicate work. As for choosing a pasta brand, rely on your preferences. Some find it convenient to work with a thick paste; many masters prefer a more liquid modification.
3. As you can see, not only tools for repairing phones are needed, you should also consider purchasing dozens of “little things”. You will probably need a no-clean flux gel. The substance boils at a very high temperature, so it is indispensable when mounting chips in elements such as BGA packages. Why is the product called no-clean? The fact is that it is characterized by a complete lack of chemical activity after soldering is completed. Accordingly, there is no risk of further damage to components as a result of corrosion. In addition, additional protection against moisture is provided.
4. A convenient addition will be a special braid, which makes it much easier to remove solder. The process of removing excess is greatly simplified and takes less time.
5. Not as a main device, but as an auxiliary device, you will need a regular electric soldering iron with 40W characteristics. It is needed when working with large discrete components that have significant heat dissipation rates. This accessory is indispensable when preparing mounting points for charging connectors and other similar elements.

Magnifying devices

Another expensive purchase will be a microscope. Even a person with excellent eyesight cannot do without it. It is used to examine boards and other small parts. With its help, particularly delicate, critical work is performed that requires maximum visual strain. In addition, look for several magnifiers of different powers. They will be a great addition to a stationary device. Sometimes it is more convenient to examine a detail in your hands.

Measuring instruments

Identifying a complex breakdown using experience alone is not at all easy, and sometimes impossible. To achieve the goal, you will need special equipment for telephone repair, which is used to test the functionality of communications. This section presents devices that will help you quickly identify a malfunction:
1. The first most important thing is the multimeter. This is one of the main examples that allows us to identify technical problems. As for the model line, there are no special recommendations here. The main thing you need to focus on when searching for a product is the accuracy of the readings. You can judge this by reading the opinions of real users.
2. It is problematic to restore a sunken smartphone without an ultrasonic bath. No amount of fine, scrupulous cleaning with special products will save the situation! It is quite possible that you will restore the means of communication, but it will not work for very long. Guarantees should be given only if there is a special bath. Thanks to ultrasound vibrations, it is possible to achieve phenomenal results in seemingly hopeless situations. Practice knows many cases when in this way it was possible to restore hopeless “drowned people” for many years. The secret of effectiveness is quite simple - this is how the effects of oxides and the manifestation of sulfations are destroyed. Impeccable board cleaning quality is not difficult to achieve; to do this, you must follow the manufacturer’s standard recommendations.
3. An oscilloscope will provide significant support in solving complex problems. It is capable of measuring and then displaying various types of signals, showing operating amplitudes. In this case, too, there are no special recommendations. The main advice is to try to choose a sample with fairly accurate readings.
4. The most important tool for repairing mobile phones today is a regular computer, or a laptop. Don't go for high performance, fashionable model. Better spend these funds on diagnostic products. Make sure to install the appropriate software to make it more convenient to work when flashing phones. It is impossible to foresee all situations, so you will definitely need Internet access to download programs and data.
5. You will need a certain set of programmers; there are a great many of them at the moment. There are universal products designed for communication equipment of several brands. There are narrowly targeted samples designed to work with a single manufacturer. There is no clear recommendation for choice. It is necessary to take into account the preferences of potential clients in the area where the service is located, and listen to the opinions of more experienced colleagues.

Today, smartphone and tablet repair services are in great demand. Even in small towns and villages there are four or five repair shops mobile technology, and many newcomers think that they will no longer get through. In reality, this is not the case at all.

If you want to try your hand at this, then you can start small, namely, acquire a minimum set of tools for repairing smartphones and tablets. And then the question arises, what to buy first? Let's talk about this.

Of the devices and materials that are most often required when repairing smartphones and tablets, I would highlight the following:

The list turned out to be small, since I tried to indicate only what has been most often used in practice over the past few years.

As you grow, if the need arises, you can purchase other, more expensive equipment: a microscope, laboratory block power supply, infrared soldering station, bottom heating station for circuit boards, ultrasonic bath, laminator, autoclave, etc.

Digital multimeter.

This means that it takes longer to heat the microUSB connector, and, consequently, the printed circuit board. Because of this, it can warp, it can swell, and delaminate. What complicates matters is that there are miniature SMD components nearby, such as resistors and capacitors, and sometimes an optical sensor or SMD LED. If exposed to excessive heat, such components may melt and become unusable.

To reduce the melting point, Rose alloy is used. Before dismantling the connector, all its contacts and soldered areas are “diluted” with a drop of Rose alloy using a regular soldering iron. Thanks to this, the solder in the soldering areas begins to melt at a lower temperature, and, therefore, we can quickly heat it with a hairdryer and dismantle it. Wherein neighboring elements and the printed circuit board does not have time to heat up too much.

Also, the Rose alloy will help out, for example, when installing a new digital microphone on the board. The fact is that a digital microphone is a rather sensitive component and is terribly afraid of overheating. Therefore, you can solder it onto the board using Rose alloy.

This alloy is expensive, but the good news is that it lasts for a long time. If you decide to save money and buy it on AliExpress, you will quickly be disappointed, since it is not sold there.

To protect adjacent elements from melting and slipping when soldering with a hairdryer, they can be covered with heat-resistant tape (also known as polyimide or Kapton).

It is used to protect plastic elements from melting and fix SMD components when soldering with a hair dryer or IR station. It is often used in smartphones and tablets themselves to isolate and fix structural elements.

Copper braid.

To remove excess solder, you will need copper braiding. Without it, it is sometimes very difficult to remove excess or solder jumpers between the contacts of the microUSB connector.

Copper braiding can be purchased on AliExpress, where it will cost you less, and there is more choice than in retail or online spare parts stores.

Adhesive for mounting touchscreens.

To install or “glue” touchscreens, you can use different adhesives (B7000, E8000, T-7000). In my practice I use B-7000 glue. It dries quickly and is easy to “soften” with light heat if suddenly something goes wrong and the touchscreen needs to be re-glued.

Nippers or side cutters for working with electronics and precision mechanics.

To remove faulty microUSB connectors, it is very convenient to use side cutters. Best choice There will be high-quality side cutters from well-known brands. Enough for a long time I used Pro"sKit 1PK-717 wire cutters. They are quite good and inexpensive, suitable for working with electronics. Unfortunately, anything harder than copper is too tough for them. Their tips break off and dismantling small elements with such wire cutters becomes a real punishment .

After some time, I decided to buy a better instrument. The choice fell on side cutters KRAFTOOL KARBMAX 22018-5-13 with tungsten carbide inserts. At that time their cost was 1600 rubles.

These are expensive and professional German side cutters, designed specifically for work with electronics and precision mechanics. According to the sellers, these are often bought by those who repair smartphones.

We repair a cell phone

In most cases, breakdowns cell phones They are quite easy to fix and boil down to replacing the display, speaker, all kinds of cables and body elements. In the vast majority of cases, complex soldering of any elements is not required. The repair process is limited to replacing the display or cable, which is connected to the printed circuit board of the cell phone via a connector. It is also quite common to clean the cell phone circuit board from corrosion and oxides. In this case, labor-intensive soldering of microcircuits and other elements is not required.

But there are breakdowns in which it is necessary to replace a microcircuit or solder some element on the printed circuit board of a cell phone (SIM card holder, battery connector, power connector, etc.).

To successfully repair cell phones, you naturally need a special tool. In addition, you also need Consumables, which should be at hand during the repair process.

When equipping one workplace for cell phone service repair, you will need several devices. Let's list them. Devices required for software repair We will not consider cell phones.

For professional cell phone repair, of course, you need to get a soldering station. All radio elements on the cell phone circuit board are surface mounted, and the radio elements have extremely small dimensions. When soldering such tiny (SMD) components, you should monitor the soldering temperature and try not to overheat the electronic components. The soldering temperature of electronic components should not exceed 240 0 -260 0 C. If the critical temperature is exceeded, there is a high probability of damage to the electronic component.

The soldering station has all the necessary functions for working with small-sized parts. This includes adjusting the temperature of the soldering iron tip within the range of 200 0 – 480 0 C, digital indication of the temperature of the soldering iron, the ability to use all kinds of tips for any work. It is also worth noting that a conventional electric soldering iron is not galvanically isolated from the electrical network, which increases the likelihood of damage to sensitive electronic elements on the mobile phone circuit board. Therefore, a regular electric soldering iron is not suitable for repairing cell phones.

Hot air soldering station.

There are two approaches to soldering surface mount elements (SMD, BGA). The first is hot air soldering and the second is infrared soldering. Despite the fact that soldering with infrared (IR) radiation has many advantages over soldering with hot air, hot air soldering stations are more widely available. This is probably due to the fact that they have a simpler design and are several times cheaper than infrared soldering stations. It should also be noted that infrared soldering stations are more suitable for repairing motherboards of laptops and large computers.

IN motherboards computers and laptops use microcircuits that have larger linear dimensions than the microcircuits on the circuit board of cell phones, and during dismantling, uniform and larger heating of the microcircuits is required. Infrared soldering stations precisely have such qualities as uniform heating.

Unlike infrared soldering stations, hot-air soldering stations heat the soldered element less evenly. In addition, when working with a hot-air soldering station, it is necessary to monitor the speed of hot air flow. If you set the air flow rate too high, then during soldering it is easy to “blow away” neighboring elements and heating of the element will be uneven due to the presence of hot air turbulence. If you reduce the air flow rate, then the heating of the soldered part will occur more slowly due to the fact that still air is a heat insulator.

Despite the negative qualities of hot air soldering, hot air soldering stations are actively used when repairing cell phones. The small size of printed circuit boards of cell phones and electronic components on them allows for fairly high-quality installation and disassembly of microcircuits and small-sized elements. Of course, during the repair process it is worth correctly setting the speed of hot air supply through the hair dryer nozzle and the heating temperature of the air.

Why is it needed? device for bottom heating of circuit boards ? Oddly enough, but when repairing portable electronics - laptops, mobile phones, PDAs - the device is very necessary. Here's the thing.

If it is necessary to dismantle any part from the device’s printed circuit board, it is necessary to heat the element to the melting temperature of the solder. Since SMT elements and BGA microcircuits are very widely used in portable electronics, when soldering with hot air you have to first warm up the microcircuit body, and only then the contacts themselves. Naturally, heat transfer occurs from the heated microcircuit to the printed circuit board. This leads to the need to heat the soldered element for a long time, which can lead to overheating.

In addition to overheating of electronic components, there is also the possibility of damage to the printed circuit board. When heated unevenly, it begins to warp, deformation and delamination occur. If you sharply heat a printed circuit board to a temperature of more than 280 0 C, it will swell. In the future, it will not be possible to eliminate such deformation of the printed circuit board. For smooth and uniform heating of the printed circuit board, a bottom heating station is used.

When replacing elements such as, for example, the SIM card retainer, the bottom heating of the board is very convenient. Before soldering the faulty fastener, the printed circuit board is heated using a bottom heating station for the boards to a temperature of 120 0 - 140 0 C. In this case, the solder at the place where the contacts are soldered warms up and for its final reflow it will require short-term soldering with hot air using a hot air gun. If you desolder the retainer only using a hot air solder soldering station, then prolonged exposure to hot air deforms the plastic base of the SIM card holder. It is clear that when replacing joysticks, the lower heating station will also make the work easier and allow it to be done more efficiently.

When restoring the operation of cell phones, you will definitely need power unit . It can be used to charge a discharged battery mobile phone or power the device being repaired. In some cases, during repairs, it is necessary to control the current consumed by a cell phone. Therefore, it is desirable that the power supply have a built-in ammeter. Preference should be given to devices with a dial ammeter, since ammeters with digital display are more inert.

For convenience, you can use a regular working battery from any cell phone. Conductors with alligator clips are soldered to its terminals (there are three of them). This universal battery can be used to repair any cell phone. The main thing is to be able to correctly connect the clamps to the power connector of the cell phone being repaired and to charge such a universal battery from time to time.

In many cases, a universal battery is enough to diagnose a cell phone malfunction and check its serviceability. In this case, a stationary power supply may not be required at all.

Ultrasonic bath (USB).

It's no secret that one of the common causes of mobile phone malfunctions is exposure to water. Since a cell phone is constantly turned on and has an autonomous power supply, even with a short-term exposure to water, traces of electrochemical corrosion appear on the metal surfaces and contacts of the printed circuit board. The difficulty of restoring the operation of “drowned” phones is that the printed circuit board of a mobile phone is multi-layered, and many microcircuits are mounted on the board using the BGA method, which makes it difficult to clean the contacts located under the microcircuit body. Manual cleaning of the printed circuit board with special cleaning sprays or alcohol does not always lead to success and the cell phone does not always restore its functionality.

For deeper cleaning of corrosion and restoration of phone boards - “drowned” - are used ultrasonic baths (UZV). The cleaning agent is poured into the ultrasonic bath. Under the influence of ultrasonic waves, microbubbles appear in the liquid, which, collapsing and moving chaotically, effectively clean all elements damaged by corrosion. Ultrasound accelerates chemical and physical processes, and the use of a special cleaning liquid promotes high-quality cleaning. Using an ultrasonic bath, you can restore the operation of a seemingly hopeless cell phone.

Multimeter.

Multimeter in the workshop - this is already a classic. Any technician who repairs electronics always has a multifunctional tester in his workshop, with which you can measure voltage, current, resistance, and conduct a “continuity test” of contacts. And if the multimeter also contains a thermocouple, then it can measure the temperature of a printed circuit board or electronic component during repair work.

This is just an approximate answer to the question of what equipment a workshop needs to have to repair cell phones. Many of the listed devices will not be needed immediately, but as you grow professionally and develop your business. It is also worth noting that the devices necessary for software repairs are not considered here.

Do not forget that in the process of hardware repair, consumables are needed: flux, solder paste, cleaner, etc.

« This is the official instruction for Alcatel PIXI 3(4.5) 4027D in Russian, which is suitable for Android 4.4. In case you have updated your... »

Installing TTF fonts on your computer How to remove an installed font

« What is a font? A font is a graphical representation of a set of characters (numbers, letters and symbols). Fonts are installed with the operating system... »

Setting up a wi-fi router from Netbynet

« In this article, we will look at setting up the D-Link DIR-300 router using the example of the NetByNet provider...Manual for setting up the D-Link DIR-300 router. 1.... »