Yamaha PSR S770 won't power off with on/off switch after turning it on
Please I have a PSR S770, the issue is it won’t power off each time i power it on, unless I remove the adaptor for it to turn off.
Please buddies, what do you think could be the problem and possibly solution to it?
Am very open to your professional advice now. Thanks, I’m most grateful.
Is dit een goede vraag?