Rebel 30 head, hum on channel 1

  • Thread starter Thread starter knolf100
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knolf100

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Hi, If someone have any tips I would be gratefull. Here is my issue:

The clean channel is humming more than it should, even with the volume knob on the lowest value with no guitar or pedals plugged in. The dirty channels is nice and quiet, just som very low noice that is common on tube amps.

I have tried to change the preamptubes, but it still the same..differente houses...the same...diffeente speakes kable the same..
I have read someone that have had similar issues. What can i do?
Thanks
 
thanks, i can see someone else have the same issue, still looking for some tips so i can use it in the studio without the hum..i hope it's is something i can fix home..
 
check the bias, I read somewhere where they may have had a issue with a reverb board or something, just email Nate or pm Ian.
 
I had the same problem and it turned out to be a preamp tube. Easy thing to check and fix, give it a shot.
 
Replaced the 5 new 12ax7 with new tubes, but still the same. I hooked up the jack into the return just too check if the hum was still there, no hum there. So the problem is in the preamp somwhere...Anything else i could try?
 
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