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Microkorg Cutoff Knob Not Working. Next Step?

 
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EJJoseph



Joined: 08 Sep 2018
Posts: 1

PostPosted: Sat Sep 08, 2018 11:07 pm    Post subject: Microkorg Cutoff Knob Not Working. Next Step? Reply with quote

Hi, I got a Microkorg not far back for a pretty decent price, but it may have been stored for a while. Everything seems in working order except for the cut off filter.

Turning the knob seems to do nothing, so I took it apart to have a look myself. I've taken some pictures that I'll post here.

- https://imgur.com/a/5pwrJvW

My concern is the little bit of rust on one of the connector pins in picture 2.

I'm experience at soldering but haven't put it into practice on commercial hardware, so I wonder if it's worth getting a replacement and re-soldering the piece. The cutoff filter is a pretty critical knob. I can't re-write my own patches without it. What are my options? Could I potentially ruin the synth by soldering a new piece on?

The part I would need is a Rotary potentiometer.

Any advice would be great.

- EJ
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OpAmp
Platinum Member


Joined: 07 Jun 2013
Posts: 1173
Location: Brussels, BE

PostPosted: Sun Sep 09, 2018 8:06 pm    Post subject: Reply with quote

Hi,

There seems to be plenty of space around the pot. So it should be fine to desolder the old one solder a new one.
Maybe first measure the pot with a multi meter. Removing the old solder and putting new one, may help as well if the pot is still ok according the measurement.

Good luck.
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slug
Senior Member


Joined: 03 Aug 2007
Posts: 370

PostPosted: Sat Sep 15, 2018 12:32 am    Post subject: Reply with quote

Yep just replace the pot.
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Derpancakes



Joined: 18 Jun 2014
Posts: 45

PostPosted: Sun Sep 30, 2018 10:40 pm    Post subject: Reply with quote

My friend got a secondhand MK without checking on it, and ended up with the same problem. It's an easy replacement job, but finding the part was kinda tough. I recall one synth parts website having it for around $7, then I got it installed within an hour. Just make sure you remember how you got everything apart.
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