Nothing happens when you press power, or it turns on and immediately off.
A damaged power supply (often after a power surge) or a short on the board.
Multimeter diagnosis, then we replace the power supply or the shorted component.
It depends on the model and on what we find inside, so we quote each repair individually. The diagnosis fee depends on the device, and you approve the exact repair price before any repair starts. If it can't be fixed, you only pay the diagnosis.