Korg M3R Power supply help or schematic.

sampler_one · Post by **sampler_one** » Thu Nov 18, 2021 6:33 pm

Hi All,
The world seems to have forgotten the M3R. It looks like there is very little info out there. I am repairing a rack M3R
and there seems to be a problem with the power supply section on the PCB. If anyone has a schematic it would greatly be appreciated. I see there is a +5,+12 and -12 rail but it does not get to the audio out op amps, so no audio.
Any help at all would be great.
Thanks
PS: the M3 is not the same at all.

voip · Post by **voip** » Thu Nov 18, 2021 7:31 pm

This may be of use:

https://app.box.com/s/2i51r6e9a0yllfn0ixb50z484w4sd0xa

.

sampler_one · Post by **sampler_one** » Fri Nov 19, 2021 4:51 am

Fantastic !
wish it was a bit clearer but beggars cannot be choosers.

VERY VERY Appreciated.