whatusername

Really...nobody?

Thanks for all the info guys, I know the thread is old but it's still very useful to guys like me. Now to my problem Using the info here I fixed the volume drop on my MM4, I also changed the momentary switches with heavy duty ones. Everything appeared fine until I noticed that channel 3 had stopped working. While I was poking around with my continuity tester (the MM4 was powered) I found that applying the plus and minus to channel 4 activated channel 3. I know it sounds confusing but I know the problem is not in the switches themselves and channel 3 actually works I just cant activate it with the switch. Could it be a bad resistor R31 maybe?