JamieTaylor1995
New member
Hi, wondering if anybody has had this problem before:
Earlier this week an EL34 blew on my renegade so this afternoon I swapped out both EL34s for new Tung-Sols and biased them to 70mV (In the renegade manual it states 65-75mV so right down the middle).
All was good for an hour or so and the amp was sounding great. I was in the middle of setting up channel 2 for recording when all of a sudden the amp all but died.
The signal now cuts out when a guitar is played as if there is a noise gate placed on the signal. There is no squealing/fizzing/hissing (although it is hard to tell as the signal cuts out so much).
I tried switching to channel 1 to see if the problem was present but no issue was found. i sweeped the tube mix knob right through from 6L6 to EL34 on both channels and this made no difference. Because of this I do not believe this is Power tube related.
I'm wondering if this is a heat related issue (cap/resistor maybe) since it took over an hour for the amp to fail or if the pre-amp tubes need changed?
possibly the pre-amp tubes in the channel 2 circuit have gone bad?
I doubt this is a transformer issue as channel 1 is fine? That's just me guessing though.
I haven't got round to checking/changing the fuses as it got too late for fiddling about with amps for one night.
Any help figuring out what is wrong will be greatly appreciated!
Just want my baby back up and running!
Earlier this week an EL34 blew on my renegade so this afternoon I swapped out both EL34s for new Tung-Sols and biased them to 70mV (In the renegade manual it states 65-75mV so right down the middle).
All was good for an hour or so and the amp was sounding great. I was in the middle of setting up channel 2 for recording when all of a sudden the amp all but died.
The signal now cuts out when a guitar is played as if there is a noise gate placed on the signal. There is no squealing/fizzing/hissing (although it is hard to tell as the signal cuts out so much).
I tried switching to channel 1 to see if the problem was present but no issue was found. i sweeped the tube mix knob right through from 6L6 to EL34 on both channels and this made no difference. Because of this I do not believe this is Power tube related.
I'm wondering if this is a heat related issue (cap/resistor maybe) since it took over an hour for the amp to fail or if the pre-amp tubes need changed?
possibly the pre-amp tubes in the channel 2 circuit have gone bad?
I doubt this is a transformer issue as channel 1 is fine? That's just me guessing though.
I haven't got round to checking/changing the fuses as it got too late for fiddling about with amps for one night.
Any help figuring out what is wrong will be greatly appreciated!
Just want my baby back up and running!