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Korg M3R Power supply help or schematic.

 
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sampler_one



Joined: 01 Aug 2014
Posts: 9

PostPosted: Thu Nov 18, 2021 6:33 pm    Post subject: Korg M3R Power supply help or schematic. Reply with quote

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.
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voip
Platinum Member


Joined: 27 Nov 2014
Posts: 3756

PostPosted: Thu Nov 18, 2021 7:31 pm    Post subject: Reply with quote

This may be of use:

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

.
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sampler_one



Joined: 01 Aug 2014
Posts: 9

PostPosted: Fri Nov 19, 2021 4:51 am    Post subject: Reply with quote

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

VERY VERY Appreciated. Very Happy
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