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My yamaha psr 343 won't come ON

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Striker105

Joined Sep 8, 2022
1
My yamaha psr 343 keyboard stopped working all of a sudden.Power goes into the system, display backlight comes on but no display or anything. Sometime ago, it worked and later returned to it dormant state. I need help please.
 
MrChips

MrChips

Joined Oct 2, 2009
35,268
Welcome to AAC!

The first step would be to locate the service manual or circuit schematic.
On another forum someone with a similar problem replaced TR201 with 2N5551 transistor.
 
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