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Provider: Pro-Logic Technologies, Kangari Building, Nairobi
The power section of a phone's PCB handles everything related to electrical power: charging input management, battery regulation, voltage step-up and step-down conversion, and power rail distribution to all components. Key chips in this section include the PMIC, charging IC, USB power delivery controller, and associated inductors, capacitors, and MOSFETs. When any part of this section fails, the consequences range from the phone not charging, to not powering on, to shutting down unexpectedly — or in severe cases, to battery damage from unregulated voltage.
Symptoms of Power Section Failure
- Phone does not charge from any cable or charger
- Phone charges only to a specific percentage then stops
- Rapid battery drain with minimal use
- Battery swells due to incorrect charging voltage (requires immediate attention)
- Phone powers on briefly then shuts down
- Burning smell or visible component damage near the charging port area of the board
Estimated Power Section PCB Repair Costs in Nairobi (2024–2025)
| Scope of Work | Labour (KES) | Parts (KES) | Total Estimate (KES) |
|---|---|---|---|
| Single power component (capacitor, MOSFET, inductor) | 2,000 – 4,500 | 300 – 1,500 | 2,300 – 6,000 |
| Charging IC replacement | 3,500 – 7,000 | 1,500 – 5,000 | 5,000 – 12,000 |
| PMIC replacement | 4,500 – 12,000 | 2,500 – 10,000 | 7,000 – 22,000 |
| Multiple power components (post-surge damage) | 7,000 – 15,000 | 4,000 – 12,000 | 11,000 – 27,000 |
| Full power section corrosion repair | 8,000 – 18,000 | 5,000 – 15,000 | 13,000 – 33,000 |
Safety Note
A swollen battery caused by a faulty power section is a fire risk. If the phone is warm to the touch near the battery or the back cover is bulging, stop using the device immediately and bring it in for assessment. Do not attempt to charge it further before diagnosis.
Pro-Logic Technologies at Kangari Building, Nairobi performs voltage testing across power rails to precisely locate power section faults before any repair work begins.
