Amperfied
Low‑Voltage Supply Instability
Charger’s LEDs or display flicker or dim during charging, but charging continues.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Weak auxiliary power supply, Loose low‑voltage connectors, Excessive load on control circuits (e.g., add‑on modules), Early failure of capacitors on PSU
How to Fix / Troubleshooting
Safety: This is usually a control‑side issue but may precede a full failure.
- Observe pattern: Note whether flicker occurs at start‑up, during high current, or randomly.
- Remove optional modules: If any optional add‑on modules are installed (e.g., external meters, relays), temporarily disconnect them (by a technician) to see if stability improves.
- Technician diagnostics: A technician should measure the low‑voltage rails under load, inspect PSU capacitors for bulging, and reseat low‑voltage connectors.
- Replace PSU or board: If instability is confirmed, replace the auxiliary power supply module or main control board.
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Repair Difficulty
Hard
4/5
Required Part
Auxiliary Power Supply Module / Low‑Voltage Harness
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