wilzgt
Full Member
I plumb for Z-Tone !
Posts: 151
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Post by wilzgt on Jun 4, 2008 8:12:46 GMT -7
I'm hoping some of you experts can help me on this non Z unit that I use with my Mazerati...
My reverb unit works fine mostly,but every once in a while it starts to hum into my amp. The way I fix it is by turning off the unit for a few seconds and then on again.
It seems to intermittantly come on anywhere after 20 minutes or so. It isn't vibration related as it happened yesterday at bedroom level amp volume.
I opened it up and checked all solder connections and they are beautifully done. I bought new tubes a few years back and changed out the power tube. I haven't touched the pre amp tubes though.
Any ideas what might be happening?
Thanks!
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Deleted
Deleted Member
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Post by Deleted on Jun 4, 2008 8:50:08 GMT -7
I'd interested in this answer as well. Especially if its a common issue or something that can't be helped. I'm supposed to be picking one of these up from my local music store this week.
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Post by Lefty on Jun 5, 2008 6:36:28 GMT -7
Tubes.
You say it comes on after 20 minutes or so...and goes away after you turn it off/on again. Tubes.
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wilzgt
Full Member
I plumb for Z-Tone !
Posts: 151
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Post by wilzgt on Jun 9, 2008 8:34:19 GMT -7
I found the problem.
It was the cable going to and from the reverb tank. After swapping tubes and having the hum problem, I began tapping and found that tapping and moving the reverb tank resulted in the hum/no hum. I found the 4 tab connector loose. I went to Radio Shack and bought a better connector.
So, when you get the reverb tank you can check that as well. My tank sounds even better now than it did before.
Surf's up Dude!!!
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Post by myles on Jun 12, 2008 10:47:17 GMT -7
You found your issue but this is a common issue for another reason .... A lot of folks think this is tubes since it comes and goes but in most cases it is the ground on your wall and noise comes and goes on the common ground. Try a ground lift .... one of those two prong adaptors on the reverb unit .... I bet you find the problem goes away.
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