HI. In most cases, this will be a failed PSU(power supply unit), but i would advise to inspect all the wiring that is linking the switch to the actual motherboard and PSU for faults. If the wiring is connected correctly, and the switch housing is not damaged, This will confirm that the PSU has failed. Replace the damaged PSU asap. This will correct the issue.
Hello there ! u have said that the on switch is not responding , has anyone tempered with the machine? wiring pls check if the wiring is in order if so the switch is damaged and needs replacement .
So get a new switch and on it
thank u
bye
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