Tune knob stopped working

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inget
 
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Joined: Sun Mar 10, 2013 12:03 pm

Tune knob stopped working

Post by inget »

I bought a x0xb0x (built to adafruit specs) a couple of months ago. Recently my tune knob stopped working. I can still tune it with tm5/tm4. I also checked the tune pot with a multimeter and it works. But as I have not built it myself and have very limited knowledge about how to build or troubleshoot one I'm kind of stuck. What should I check next?

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antto
 
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Joined: Thu Apr 15, 2010 3:21 pm

Re: Tune knob stopped working

Post by antto »

check if you got 5.33V on one of the outter legs
then test for continuity between the middle leg and R118 (while x0x is switched off)

synthplayer
 
Posts: 20
Joined: Sat Dec 13, 2008 5:54 pm

Re: Tune knob stopped working

Post by synthplayer »

The middle pin of the TUNE pot should vary from 0V to 5.33V as you turn the TUNE pot from one end to the other, you should also try retouch the joints of R118 and the TUNE pot with power off.

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