Marshall jcm 900 high gain dual reverb

SCOTTDANNY22

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Join Date: Oct 2017

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#1

Marshall jcm 900 high gain dual reverb

10-26-2017, 09:17 PM

hELLO When i play through my marshall jcm 900 sometimes the volune goes real low then real high all by itself then after a bit it stays real low what is the problem ? If any one knows please let me know thanks in advance
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The Dude

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Join Date: May 2010

Posts: 10210

Location: Sioux Falls, SD
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#2

10-26-2017, 10:39 PM

It could be any number of things. Try jumpering the effects loop with a short cable first to see if it's just a problem with switching jacks.

"I took a photo of my ohm meter... It didn't help." Enzo 8/20/22
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