Hi. I have the PX750. Was doing OK until one day kids might have messed with it.
It turns on fine, lights initialise but then i realise the power lamp is not lighted. I also get no sound. I've tried function / local sound etc but get nothing. I can't seem to enable operation tone either.
One thing for sure, operation lock works (func+last key)
Off and on it seems to be OK when I mess around enough with function+X but after I disconnect mains and try to turn it on again, I get this non operative mode.
Can anyone tell me what's going on pls. Must be some midi/usb/local setting....
Thanks