Finding yamaha psr 450 circuit board with part #28750 DM X7588

We live in the 21st century, just google it.

Lets answer the question. Which button is not working? It normally means as suggested either the carbon under the rubber button is worn or in some cases the circuit board is damaged or worn. Try to replace the button first as the cheapest option. Report which button and I can send you details of the part number needed either by number on the attached or by which function it does eg tempo + / -

check dry joints on the main dm board or replace main processing board.

Try Ebay!

This type of keyboard is well know for the power socket breaking away from the main PCB. You will need to unscrew lots of screws to reveal the circuit board with the power socket on. If you look closely at the solder side you will probably see that the track that the socket is soldered to has broken. Simply link the solder joint to the circuit further along the track by bridging between socket and next point along the track. You may need to replace the socket if it has become damaged. If you can use a soldering iron it is fairly easy but if in doubt contact a repairer.


If you need a socket Google :

Yamaha PSR power socket ( KPA3 / PA130UK / EPA3 ) (LB30226R)


Yamaha PSR power socket ( KPA3 / PA130UK / EPA3 ) (LB30226R)

http://music.manualsonline.com/manuals/mfg/yamaha/psr620.html there you go please give me some thumbs up!

Search Ebay for "psr 450 adapter"... They cost about $16

My keyboard yamaha psr2000,so I want parts silicone rubber keypad 61 and including electronic board,thank you.

rubber contact strip requires replacement

I don't have a parts source for these other than Yamaha. Call them up to get the part number for the board. The sound is usually sent through the headphone jack which acts as a switch when you use headphones. Replacing that board should resolve your problem. If the board is no longer available, it is possible to repair the existing one, but this is a specialty task and not one I would recommend a novice attempt.

Please keep us posted on your progress,
Dan