Yamaha Pss 460, no sound! Amp La4500 replaced, but nothing!

[SynthWizard]

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Yamaha Pss 460, no sound! Amp La4500 replaced, but nothing!

Dear friend, the only thing that is lighting up on the keyboard, is only the power led, no other function works... you only know that the keyboard is on, with the red light... and nothing else... none button turns on no panel led, nothing... not even ...


https://electro-music.com/forum/viewtopi...974#452974