Power Electronics Repair in Kenya
Power boards fail more often than almost anything else in electronic equipment because they handle heat, surges and high current every day. Sinsal repairs power conversion electronics at the component level.
Service Overview
Power electronics covers switch-mode supplies, DC power supplies, inverter and converter boards and the power stages inside larger equipment. Faults here usually trace to a small group of parts: switching devices, rectifiers, electrolytic capacitors, gate drivers and protection components. Finding the actual failed part, and the reason it failed, is what stops the fault repeating.
This page covers power conversion boards in general. For stand-alone power supply units the power supply repair service goes into that equipment in more detail. Both use the same diagnostic discipline: confirm the failed stage with measurement before replacing anything.
Equipment We Work On
- Switch-mode power supplies (SMPS)
- DC power supplies and converters
- Inverter boards and drive power stages
- UPS control and power boards
- Industrial and telecom power modules
- Power stages inside medical and networking equipment
Typical Failures
- Dead supply after a blown fuse or shorted switching device
- Output voltage low, high or unstable under load
- Bulging or leaking electrolytic capacitors
- Supplies that squeal, cycle or hiccup instead of starting
- Failures after surges, overloads or sustained heat
- Failed gate drivers and feedback circuits
Diagnostic Process
- 01Visual inspection for bulged capacitors, burn marks and open fuses
- 02Isolated measurement of primary and secondary components without applying mains power first
- 03Controlled power-up through a current-limited source where it is safe to do so
- 04Feedback, control and switching waveform checks with an oscilloscope
- 05Identification of the failed stage and what damaged it
Repair Process
- 01Replacement of failed switching devices, rectifiers, capacitors and protection parts
- 02Correction of the cause where one is found, such as degraded capacitors or poor cooling
- 03Re-inspection of neighbouring components that may have been stressed
Testing and Validation
- Output voltage accuracy and ripple under load
- Start-up behaviour from a cold state
- Thermal imaging and extended run at load
- Protection behaviour checked where it can be exercised safely
What You May Receive
Diagnostic findings, Repair record, Post-repair load test result.
Warranty
Completed repairs are accompanied by warranty documentation. The cover, its term and its exclusions are written on the warranty document issued with the job, so they are agreed in writing for your equipment rather than assumed. Warranty applies to the repaired fault and the work carried out, not to unrelated failures elsewhere in the equipment.
Important Limitation
Mains-powered equipment is handled with appropriate precautions. Safety-rated supplies are repaired electrically only; re-certification of safety-rated equipment is the owner's responsibility.
Common Questions
Can a failed SMPS be repaired?
Often, because the fault is usually confined to a few parts. Assessment confirms which parts failed and whether suitable replacements are available.
Why do power supplies keep failing?
Common causes are heat, ageing electrolytic capacitors, surges and overload. Where the same supply keeps failing, failure analysis can look for the underlying cause.
Do you repair inverter boards?
Yes, at the board level, subject to assessment. Drive and inverter power stages are covered under industrial electronics repair as well.
Have a Failed Power Board or Supply?
Describe the equipment and the fault. Sinsal will confirm whether it is a fit for diagnostics and repair before any work begins.
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