Casio CTK-2080 not turning on

[InNeedOfHelp]

I dropped this piano and I used to be able to play it, but it would turn off out of nowhere if the volume was too high or if I played to high or low notes. Now it won't even turn on at all. What could be the problem?

 

[InNeedOfHelp]

 

[73's de Edd]

How about a almost microscopic fracture of one of the units PCB's and a resultant hairline crack that extends across several foil paths. When touching . . . . . connection is made . . . . .when flexed or vibrated . . .discontinuity occurs.
Or possibly the same situation, if a plug / connector is unseated .

 

[MuchToLearn1234]

I can't log into my " InNeedOfHelp" account so I'm using this one, 73's de Edd how would fix the microscopic damage?

 

[gorgon]

It could be a problem with the power supply.
When playing louder and on lower notes you use more power from the supply. Could be as simple as electrolytic capacitors drying out.
Start by measuring voltages from the power supply and check if they are valid and free of ripple.
If there is big a transformer that ar soldered directly to the PCB, it could have bad connections. If so, try to resolder the connections. In general follow the power from the grid input to/through the power for breaks, including the ones Edd wrote about.
If the power is good, we need to look other places.