Why electronic boards fail
Electronic boards are sensitive to multiple environmental factors: temperature, humidity, unstable mains voltage and component quality. In Buenos Aires and the metropolitan area, power cuts and voltage spikes are frequent causes of damage to electronics in industrial and domestic equipment.
Most common faults we repair at FixBA
These are the faults we see most frequently:
- ✓Swollen or burst electrolytic capacitors: cause spontaneous shutdowns, slow starts or instability.
- ✓Burned MOSFETs or transistors: usually caused by overload or short circuit on the load.
- ✓Blown fuses: usually a symptom of another fault, not the root cause.
- ✓Interrupted PCB tracks due to overheating or mechanical damage.
- ✓Moisture or liquid corrosion: affects conductivity of components and tracks.
- ✓Microcontrollers damaged by static or incorrect voltage.
- ✓Transformers with a shorted turn: detected by abnormal temperature or noise.
Symptoms that indicate an electronic fault
These symptoms suggest there is a board problem that requires diagnosis:
- ✓The device does not power on even though it has power.
- ✓It powers on but shuts off after a variable time.
- ✓Intermittent operation: sometimes it works, sometimes it does not.
- ✓Abnormal noise (hum, click, whistle from the power supply).
- ✓Smell of burning, even if the device continues working.
- ✓Incorrect or unstable output voltages.
- ✓Alarms or display errors appearing with no known cause.
What to do (and not do) before diagnosis
Before bringing the device to the repair service, follow these steps:
- ✓Disconnect the device from the supply if there is a smell of burning.
- ✓Do not try to clean the board with water or non-specific products.
- ✓Note when the problem started and what happened just before.
- ✓If the device shows an error code, photograph it.
- ✓Do not attempt repair without experience; a short circuit can damage additional components.
How we work at FixBA
We receive the board or device, carry out a technical diagnosis, identify the damaged components and present a clear quote before proceeding. We work with quality replacement components and provide a warranty on the work performed.