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

Joined Oct 2, 2009
30,802
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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