Motherboard specialists
Motherboard repair is one of our main specialties, not a side service.
Motherboard repair for phones in Florianópolis
Phone won't turn on, restarts by itself or gets hot for no reason? Help Cell's phone motherboard repair fixes the fault on the board instead of replacing the whole phone. Our bench technicians have been doing this since 2007.
- Motherboard repair specialists
- Technicians with over 10 years at the bench
- 90-day warranty on the service
A phone motherboard repair is the repair of the phone's main circuit board, the motherboard, when a component or a circuit trace has burned, shorted or come loose. It is the right path for an Android that won't turn on, restarts by itself or won't charge, and where the screen, battery and charging port have already been ruled out. At Help Cell, the service is done by our own technicians at Floripa Shopping. The time and the price are given after the evaluation.
What a phone motherboard repair is
The motherboard is the circuit board that holds the processor, the memory, the power control, the charging control and the connections to the screen, camera, antenna and battery. It is the brain of the smartphone. When something on it fails, the phone can simply die, even with a perfect screen and battery.
The repair works on tiny parts soldered to the board, so it is bench work, very different from replacing a screen. The goal is to save the phone, with the photos, contacts and apps stored on it.
How an Android motherboard gets damaged
The most common causes are drops, liquid, a bad charger, slow corrosion and overheating. A drop can loosen a component on the board without leaving any mark on the outside. Liquid creates short circuits and slowly corrodes the contacts, sometimes days after the phone got wet. A low-quality charger and power surges burn the circuit that controls charging.
What microsoldering is
Microsoldering is the technique of removing and reinstalling very small components on the board, or rebuilding a broken trace, with controlled heat and great precision. It is what lets us repair the board instead of replacing it whole. The team explains which equipment the shop uses at each step during the evaluation.
A motherboard repair is not a phone replacement
Help Cell repairs your phone. We do not sell phones, new or used, and we do not unlock phones. If the repair isn't worth it in your case, the team will tell you clearly before you spend any money.
Signs
When the problem might be the phone's motherboard
If you recognize any of these six signs, it is worth asking for a motherboard evaluation.
Phone won't turn onNo sign of life, even with the charger plugged in for hours.
Restarts by itselfGets stuck on the logo, or turns off and on in a loop.
Won't chargeNew cable, charger and battery, and the charge still doesn't go in.
Gets hot when not in useIt stays warm while idle, and the battery runs out in a few hours.
Turns on, but no displayIt vibrates and rings, and the screen stays black even after swapping it for another one.
Stopped working after getting wetIt worked for a few days, then died for good.
Phone won't turn on: how to tell if it's the motherboard or another part
Many phones that won't turn on have a simpler and cheaper problem to fix, such as an old battery, a dirty port or a faulty screen. Only the evaluation confirms it, but you can do a quick check at home before you contact the shop.
Test 1: does the charger get any reaction?
If the phone vibrates, shows the charging icon or gets slightly warm when plugged in, the board is usually alive, and the fault may be the battery or the screen. If there is no reaction at all after charging for a while, the suspicion moves to the power circuit.
Test 2: the phone responds, but the screen is black
Call its number from another phone. If it rings or vibrates, the phone is on, and the problem may be the screen or its cable. If it is the screen, the next step is an Android phone screen replacement, not the motherboard.
Test 3: cable, power adapter and port
Try another cable and another power adapter, and look inside the charging port with a light. Dirt or a bent pin fixes a lot of cases. If the port is worn, see charging port replacement.
Test 4: the phone has been wet
If it fell in water, into wet sand or got caught in the rain, don't keep trying to turn it on. Each attempt can make the damage worse. Start with chemical cleaning for a wet phone, which the team evaluates together with the board.
Step by step
How motherboard repair works at Help Cell
Four steps, from the first contact until you have your phone back.
- 1
You tell us what happened
On WhatsApp or at the counter. Tell us the brand, the model and the history: a drop, liquid or a charger.
- 2
We evaluate the board
The technician tests the phone, finds the fault and tells you whether the motherboard can be repaired.
- 3
You decide with the price in hand
Help Cell gives you the price and the time for your case. Nothing is done without your approval.
- 4
We repair it and you check it
At pickup, you test the phone and get the 90-day warranty.
Scope
What is included in a motherboard repair
What the price covers and what is left out.
Included
- Evaluation to find the fault on the board
- Labor by a Help Cell technician
- Repair of the faulty component or trace
- Testing of the phone's functions before pickup
Not included
- Screen, battery or port that also need replacing
- New damage from a drop or liquid after the repair
- Account or passcode unlocking of the device
- New cases, screen protectors and accessories
How much does a phone motherboard repair cost?
The price of a motherboard repair depends on the defect, the model and the condition of the board. Two phones that won't turn on can have very different problems, so Help Cell does not publish a single price. We evaluate the phone and reply with the price for your case, on WhatsApp.
| Factor | How it affects the price | Example |
|---|---|---|
| Type of defect | One loose component is simpler than several burned ones. | A faulty charging chip versus a short that hit the whole circuit. |
| Phone model | Compact boards and rare parts take more work. | An entry-level phone versus a top-of-the-line model. |
| Liquid damage | Corrosion spreads and may need cleaning and more repairs. | A phone that stayed wet for days before it reached us. |
| Part to replace | When a component can't be repaired, the new part is added to the price. | A power chip that needs to be replaced. |
| Previous attempts | A board that was already opened or tampered with by someone else may be more damaged. | A phone that went to another shop without success. |
What nobody tells you before a motherboard repair
A motherboard repair is where people lose the most money by rushing a decision. These points can help you avoid that.
Common mistakes with a phone that won't turn on
Pressing the power button or the charger again and again
Turning it on and off over and over, or leaving it on the charger for days, can make a short circuit worse. If nothing responds after a few hours, stop and bring it in for an evaluation.
Putting the phone in a bag of rice
Rice does not remove moisture from inside the board, and it can leave dust in the ports. What helps is turning the phone off right away and taking it for chemical cleaning.
Opening the phone at home or at an inexperienced shop
A badly used soldering iron can lift more components and turn a repairable board into a total loss. If someone has already opened the phone, tell Help Cell.
Checklist before you bring in your phone
Write down what happened and when
A drop, liquid, a new charger or a freeze before it turned off: every detail helps the technician find the fault faster.
Bring the cable and the charger you use
That way the technician can test charging with the accessories you use every day, and rule them out.
Think about what is stored on it
If the phone holds important photos without a backup, tell us during the evaluation. A motherboard repair can give you back access to your data, but Help Cell does not promise that before seeing the phone.
Comparison: motherboard, battery, port or screen
An overview to help you match each problem with its symptoms. Only the evaluation confirms the cause in your phone.
| Symptom | Motherboard | Battery | Port or screen |
|---|---|---|---|
| No sign of life | Common, no reaction to the charger | Possible in a very old battery | A worn port blocks charging |
| Restarts by itself | Common after a drop or liquid damage | Common with a worn battery | Rare |
| Gets hot when idle | A sign of a short circuit on the board | A swollen battery also gets hot | Rare |
| Won't charge | When the charging circuit has failed | Possible | Very common at the port |
| Turns on, but no display | Possible, if the screen is new and tested | Rare | Common in the screen or its cable |
Why Help Cell
Why get your motherboard repaired at Help Cell
Since 2007 in Florianópolis, and at Floripa Shopping since 2012.
Our own technicians
Technicians on our team do the repair. Nothing is outsourced.
Over 10 years at the bench
Technicians who have seen most Android faults.
90-day warranty
Covers the service against defects, under the warranty terms.
All brands
Samsung, Motorola, Xiaomi, Pixel and other Android brands.
Contact cleaning as a courtesy
If the phone doesn't charge, contact cleaning is a courtesy.
Your model
Motherboard repair for your Android model
Pick your model to see the care it needs and the price on request.
Where we are
We serve Florianópolis and Greater Florianópolis
Our shop is inside Floripa Shopping. If you prefer, we can pick up your phone at your home.
Shop at Floripa Shopping
Help Cell, Floripa ShoppingRod. Virgílio Várzea, 587, Saco Grande
Florianópolis, SC, 88054-605
- Mon–Sat, 10am–10pm. Sunday, 2pm–8pm (no repair service).
- WhatsApp +55 48 99110-7381
Pickup and delivery across Greater Florianópolis for any service, with a fee. See also our Android phone repair in Florianópolis page.
Chat on WhatsAppTestimonials
What customers say about their motherboard repairs
Real reviews from people who had a motherboard repaired at Help Cell, straight from Google.
Mykael looked after me really well, proactive and attentive. He installed my camera protector and helped me choose a case with care. It was an iPhone 17 Pro Max. Congratulations to the store!
Celio De Melo MatosGoogle review, Feb 2026They replaced my phone battery the same day even though it was an older model, and they also worked hard to find and apply a screen protector. Everything came out right, they do a great job with good service from the whole team.
Cristina RubyGoogle review, Jun 2026I love this store, and Matheus's service definitely makes all the difference. He deserves the best rating possible! I recommend the store with my eyes closed and I will happily buy here again. Score: 10000.
Questions
Frequently asked questions about phone motherboard repair
How much does a phone motherboard repair cost?
The price depends on the defect, the model and the condition of the board, and only the evaluation shows that. Send the brand, the model and what happened on WhatsApp +55 48 99110-7381 and Help Cell will guide you.
How long does a motherboard repair take?
It depends on the defect and on part availability, so Help Cell tells you the time after evaluating your phone. Screen and battery replacements are ready within 2 hours, but a motherboard is a different kind of job.
My phone won't turn on: is it the motherboard?
Not always. The battery, the charging port and the screen can also make a phone look dead. The evaluation separates each cause before any repair, so you don't pay for a repair you didn't need.
Will I lose my phone's data?
With a motherboard repair, the goal is to keep everything on the phone as it is. But because the defect is serious, there is no full guarantee before we see the phone. If it still turns on at any point, make a backup right away.
Can every phone with a burned motherboard be fixed?
No. It depends on which components were hit and how far the damage spread. The team will tell you honestly whether your case can be fixed before you approve the service.
Does the motherboard repair have a warranty?
Yes, the 90-day warranty from Help Cell covers the service. It does not cover drops, liquid damage or misuse after delivery.
Do you repair the motherboard of every Android brand?
Yes, Help Cell works on all brands. See the pages for Samsung repair, Motorola repair and Xiaomi repair, or ask us about another brand.
Do you pick up and deliver the phone?
Yes. Pickup and delivery covers Greater Florianópolis for any service, with a fee.
Other repairs
Other repairs and Android brands
If the problem might be something else, or you want to see your brand, start here.
Phone got wet
Chemical cleaning for a phone that fell into water.
See the repairCharging port
Phone that won't charge because the port is worn or dirty.
See the repairBattery replacement
Battery that drains fast, shuts off or is swollen.
See the repairSamsung repair
Repairs for Galaxy phones, from the A line to the S line.
See Samsung repairMotorola repair
Repairs for Moto G, Moto E, Edge and Razr.
See Motorola repairXiaomi repair
Repairs for Redmi, Poco and other Xiaomi phones.
See Xiaomi repairTalk to us
Request a motherboard check for your phone
Tell us the brand, the model and what the phone is doing, and get guidance. Prefer to call? Dial +55 48 3238-7381. Or go straight to chat on WhatsApp.
Request a motherboard check for my phone