low freq white noise from clean channel

surface54

New member
hi ive had this problem the entire time ive had this amp (B-52 AT-100)
sometimes it goes away for a session or two. but for no apparent reason this sound will return only on the clean channel of the amp.
things ive tried:
1. replacing every tube in the layout one by one
2. unplugging amp for awhile, once that fixed it but it may of not been that reason.
3. unplugged reverb tank.

ive included a clip of the exact sound.
i can still play through the sound just that level of noise is always present in the signal.
you can hear when i click over to the overdrive channels which are fine.

any ideas?
 
Re: low freq white noise from clean channel

id like to help...but seeing as you have been thru a troubleshooting process already i reckon you might need a tech.
 
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