How the fault appears
- short circuit and heating
- no power with a known-good battery
- one module or sensor is inactive
- corroded contacts or traces
Model-specific repair · all Serbia
Component-level smartwatch mainboard repair
When the battery, display or flex is not the cause, the fault may be on the mainboard. Dense construction requires electrical measurements and repair under magnification. We accept watches in Belgrade or by courier from anywhere in Serbia.
90 days on labor, 6 months on parts5.0 · 10 Google
What to do before service
Component-level repair is not possible in every case; feasibility depends on multilayer-board damage and compatible part availability.
What we test during diagnostics
- resistance and current-draw measurement
- short-circuit tracing
- microscopic component and solder inspection
- board-to-module connection checks
Possible repair work
- trace and pad restoration
- replacement of damaged passive parts and controllers
- connector and flex-interface repair
- power-draw checks and extended post-repair testing
Models relevant to this service
Garmin Fenix 6→Garmin Fenix 7→Garmin Fenix 8→Garmin Instinct 2→Garmin Epix Gen 2→Samsung Galaxy Watch Active2→Samsung Galaxy Watch4→Samsung Galaxy Watch5→Samsung Galaxy Watch6→Samsung Galaxy Watch7→Samsung Galaxy Watch Ultra→Amazfit GTR 3→Amazfit GTR 4→Amazfit T-Rex 2 / Pro→Amazfit Balance→Huawei Watch GT 3→Huawei Watch 4→Apple Watch Series 6 / 7→Apple Watch Series 8 / 9→Apple Watch SE→Apple Watch Ultra→Fitbit Sense / Versa→Withings ScanWatch→
Guide labour prices
The exact price depends on watch version, root cause and part availability. We provide a guide before diagnostics and begin work only after approval.
Watch diagnosticsFree
Battery replacementfrom 3,000 RSD
Screen / glass repairfrom 2,500 RSD
Button / flex / sensorfrom 2,500 RSD
Speaker / microphone replacementfrom 2,500 RSD
Other watch issuefrom 2,500 RSD
All smartwatch faults
Battery replacement→Display and touch repair→Watch not charging→Watch will not turn on→Button or crown not working→Liquid and corrosion damage→Battery drains quickly→Watch charges slowly→Works only on charger→No image on screen→Touchscreen not working→Sensors, heart rate or GPS not working→Restarting or stuck on logo→Sound, microphone or vibration not working→Will not connect to phone→Watch is overheating→Display lifted or detached→
Frequently asked questions
How much does “Mainboard repair” cost?
Smartwatch diagnostics are free. The exact price depends on the model, root cause and part cost, and is approved before work begins.
Can the fault be diagnosed from a photo?
A photo can show external damage and help identify the model. Power, charging and board faults require measurements after the device is received.
Can I send the watch by courier?
Yes. We accept devices from across Serbia. Send the model, symptom and city first so we can advise on packing and whether to include the charger.
Do you begin repair immediately?
No. We diagnose first, report the cause, available options and exact price, and begin only after your approval.