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by sampler_one
Fri Nov 19, 2021 4:51 am
Forum: Korg M3
Topic: Korg M3R Power supply help or schematic.
Replies: 2
Views: 3539

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

VERY VERY Appreciated. :D
by sampler_one
Thu Nov 18, 2021 6:33 pm
Forum: Korg M3
Topic: Korg M3R Power supply help or schematic.
Replies: 2
Views: 3539

Korg M3R Power supply help or schematic.

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 ...
by sampler_one
Wed Sep 05, 2018 5:54 am
Forum: Korg M50
Topic: Loading system failed...! Help
Replies: 5
Views: 6237

same problemo

you cannot update if you have no Menu.
I have the same issue.
by sampler_one
Wed Sep 05, 2018 5:35 am
Forum: Korg M50
Topic: OS Frozen
Replies: 0
Views: 2579

OS Frozen

I have a Korg M50, 61 key and when Booting it up I get to a screen that says : " Loading OS Failed". From that point on it is frozen. I would like to know if it is possible to still load the OS from an SD card without the menu? Any info would be a big help. If you feel this is a hardware problem and ...
by sampler_one
Wed Sep 05, 2018 5:31 am
Forum: Korg Legacy Collection
Topic: M50 61key OS Frozen
Replies: 1
Views: 2911

M50 61key OS Frozen

I have a Korg M50, 61 key and when Booting it up I get to a screen that says : " Loading OS Failed". From that point on it is frozen. I would like to know if it is possible to still load the OS from an SD card without the menu? Any info would be a big help. If you feel this is a hardware problem and ...
by sampler_one
Tue Dec 29, 2015 3:56 am
Forum: Korg Pa2XPro - Pa800 - Pa500
Topic: Help PA500 Need PSU SCHEMATIC - internal power supply
Replies: 1
Views: 1595

Help PA500 Need PSU SCHEMATIC - internal power supply

Hope someone can help out

PA500
Help Need PSU SCHEMATIC - internal power supply

Regards Garry
by sampler_one
Tue Sep 16, 2014 11:12 pm
Forum: Korg MS2000 & microKorg
Topic: Ms2K LCD shows odd Characters after trying to run Diagnostic
Replies: 1
Views: 1266

Chip level problem MS2000R

Since all seems to work except the problem of random text on The LCD, i am thinking this maybe a chip problem or possible the DSP I replaced is defective?

Can anyone confirm?

Thanks!
by sampler_one
Tue Sep 16, 2014 6:17 am
Forum: Korg MS2000 & microKorg
Topic: Ms2K LCD shows odd Characters after trying to run Diagnostic
Replies: 1
Views: 1266

Ms2K LCD shows odd Characters after trying to run Diagnostic

I tried to Run Alain's instructions for my MS2000R Diagnostics. Now my display only shows random characters on the LCD..
All works but I can't read anything. It's like I am stuck in a diagnostic sequence..

ANY HELP WOULD BE GREAT !

Thanks,
Garry
by sampler_one
Fri Aug 01, 2014 5:52 am
Forum: Korg MS2000 & microKorg
Topic: General Electronic Knowledge: ANYONE! Microkorg Power Issue
Replies: 13
Views: 19305

How to fix

This is what has to be done.. 1st you require a 9Volt 1000ma DC power pack. (make sure connector is the correct polarity, see the diagram on back of Korg) Next there is 3 parts to change but they are SMT, you need proper equipment to change these. Very tiny parts.. The 3 parts are IC5 , F1 , FU1 ...
by sampler_one
Fri Aug 01, 2014 4:37 am
Forum: Korg MS2000 & microKorg
Topic: Help Help my knob does not work
Replies: 6
Views: 4943

Help Help my knob does not work

Hi, 1st post.. I just repaired a power supply problem IC 5 was blown in the power supply. I then went to test the unit and all seemed fine with this MICROKORG.. At 1st all seemed fine until I tried to edit. The 5 Knobs will not function at all. Shift+7 does not work and Shift+8 does not work.. When ...

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