Hi , my pa 50 sd is not working now, it shows only a messege 'korg pa50sd boot ... wait please...'

SOURCE: korg pa-50 no sound from right speaker but has sound from left

Several things to check:

If the speakers are cut off when externaal cables are connected to line outs, possibly the jack sensing switch for the right channel thinks that a plug is in there... you might cycle one in and out to see if that might fix.

Another thing is they LIKELY have a PAN control setting and it might be set full left. The external MP3 would NOT be under PAN control, only the keyboard voices would be affected by it.

SOURCE: Hi I have a problem with RAM memory korg pa 800 in

If it says there is a RAM memory error, there is likely a bad module. If you installed these yourself, it is likely you have installed the wrong type or an incompatible configuration of the modules.

USUALLY the modules need to be identical in these synths. When upgrading, buy a complete set fot the unit and ones that are specifically guaranteed for it.

SOURCE: I am trying to get the LED darker so I can see it

Try as you might, there doesn't seem to be a contrast control on this unit.

Things to try:

Shielding from light.

Polarizer similar to those used for privacy on computer screens.

Try a color filter, possibly orange.

Maybe a good old umbrella as silly as it sounds... there just isn't any way to darken the display.

The display by the way is NOT and LED, but a LCD on this unit.

SOURCE: hi i got the korg

Hi
I have the same problem here, just happened today. Can you update me on the status of your device and how you fixed it?

Thanks