Hyundai
No Power / Input Supply Failure
Charger does not power on at all; no LEDs or display, even though the breaker is on.
Advertisements
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.
Advertisements
Possible Causes
Tripped upstream breaker or RCD, Loose line or neutral at Hyundai charger terminal block, Blown internal fuse on power board, Failed internal SMPS power supply
How to Fix / Troubleshooting
Safety first: Verify the breaker is OFF before opening the charger. Only qualified persons should work on live circuits.
- Check upstream protection: Confirm the dedicated EV charger breaker and any RCD are in the ON position and not tripped.
- Test supply voltage: Using a multimeter, measure voltage at the charger input terminals to ensure correct supply is present.
- Inspect terminal block: With power OFF, tighten all terminal screws and look for signs of overheating.
- Internal fuse: Many Hyundai chargers include an internal low‑voltage fuse on the power board. If accessible, check and replace only with the specified rating.
- If supply and fuse are OK and still no power: The internal SMPS or main control board has likely failed and must be replaced by a technician.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Power Board / Internal Fuse
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements