davej
New Member
Posts: 18
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Post by davej on May 2, 2017 5:49:48 GMT -7
I have a really sweet 2010 CG 1-12 combo. It was my first Z and I still love it.
But, I recently noticed that there is still sound coming from the amp even when the volume control is turned down all the way. I usually use the amp with a pedal board, and go to "standby" by engaging the tuner. So, this issue may have been there for quite a while before I noticed it.
The volume control does work, it just doesn't completely cut the sound all the way. Just maybe 80% or so. And I don't notice any scratchiness from the volume control, which I would have expected with a dirty pot.
I suppose I probably ought to open her up and try to clean the volume pot, but I figgered it couldn't hurt to ask the Z-Talk folks for advice before venturing into the chassis.
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Post by Jaguarguy (Mike) on May 2, 2017 6:55:32 GMT -7
You can send a note to Don at repairs@drzamps.com - he might be able to give you some hints over the phone.
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davej
New Member
Posts: 18
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Post by davej on May 2, 2017 14:17:27 GMT -7
Thanks. I'll give it a shot.
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Post by bgkyt1 on May 3, 2017 11:20:13 GMT -7
i have had that happen, and a tech said it was the v1 preamp tube. they replaced it and it was fixed.
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davej
New Member
Posts: 18
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Post by davej on May 3, 2017 17:33:22 GMT -7
Thanks. I'll check into that tomorrow.
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davej
New Member
Posts: 18
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Post by davej on May 4, 2017 19:50:21 GMT -7
Well, here's the deal...
This morning I swapped V1 out and it didn't help. Plan B (as suggested by the factory tech) was to investigate the volume pot and see if it needed to be replaced. So, I opened up the chassis and tested (or at least I helped) the volume pot with clips and a meter. Nothing really jumped out as being a problem, so the chassis was returned to the cabinet and everything was buttoned back up.
Then, I plugged in a guitar and turned on the amp. The volume control worked just fine!!
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Post by DRZ on May 5, 2017 0:54:19 GMT -7
Happy your amp is working, I to do not like magical fixes.
But correct me if I'm wrong. How can an issue of a Volume pot not completely disingaging when set to 0 effect a live performance?
Z
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davej
New Member
Posts: 18
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Post by davej on May 5, 2017 4:26:30 GMT -7
You are correct, Doc. If the same problem came back during a performance, it wouldn't be apparent.
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