Yamaha PSR-225GM - No response when depressing keyboard keys

by Fred
(Colorado Springs, CO, USA)

I have a Yamaha PSR-225GM. It powers up, but I get no response from depressing the keyboard keys. The demo song works, the percussion background works, but nothing that uses the keyboard. Also, the keyboard in the LCD display does not respond when depressing a key or trying the chord accompaniment.

I have purchased the service manual, which is of little help since the only test sequence requires the keyboard to work for it to initiate. I have tighted all of the connectors throughout the unit, particularly those connecting to the keyboard and MKS5 (replacement for the MKS3) circuit board. I did check, and I have +5 volts entering the MKS5 board.

Any suggestions?

Where can I have a PSR-225GM repaired ?

by Mary
(Sun City, AZ)

Where can I have a PSR-225Gm repaired in the Phoenix AZ area? I have one that has several "dead" keys. The unit has been played sparingly.

I need a power cord for the PSR 225 ..

by marc
(NY ny)

where can i get it and know it will work??

Spare parts for a Yamaha PSR 225

can I buy a replacement battery compartment door for a yamaha psr 225 keyboard? If so, where?

No sound from keys on Yamaha PSR225

by mark
(uk)

Yamaha PSR225
Is there a factory reset button/command
I cant get any sound from keys/
speakers working will play preset/demno song and drum beats/metronome