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Most likely the Program Mode does not copy joystick info.
Get the User Manual online, if you want Google
KORG PA50 FACTORY RESET
But then you will lose all your memories...
It is power supply regulator problem.
In the regulator circuit, DC 12volt from adapter is separated into +8V, -8V, +5VA, +5VD. Some causes when the unit hang /blank/ frozen is one of the existing supply voltage is drop. In general, +5V.
Also check the adapter voltage, if still normal and the current is sufficient.
Adapter must have DC12volt and current of at least 3 amperes.
It may happen, when the adapter is measured without load, it's read normal 12v, but when loaded to turn on the keyboard, many voltage decreases (lets say,between 8-10v).
This indicates that the adapter is not good and need to replace.
i have korg pa 50 fd when i turn on the power on screen says korg pa 50 only thing work just piano that is it my menu all freez to download the floppy disk is any body has any idea thanks plz help me out
Replace the caps and this time disconnect power supply rails that go to the amp module, then check positive rail for +30V and -30V, if they are present then your power amp ic's that if i remember correct are TDA7293 are blown, or at least one of them, let me know your results.
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