Hi Guys
I think I have a little problem with my Mark III - blue stripe combo, geq, rev (EL34 modded) export - 60wt, I noticed that when I would turn the stand by on after warming up, the amp would crackle very loud, it doesnt matter if the input jack is pluged into a guitar or not, but when it does make this crackle noise there is flashes of blueish light on each tube, it happends on both tubes simultaneously. This slowly goes away, also I cant turn it down as the volume makes NO difference to the crackle sound - even if there is NO volume on it makes this sound, you can hit the combo with your hand and the noise would sound.
Another thing that I noticed, if I tap one of the power tubes, one would make the crackle and rattly sound, the other would make NO crackle or rattle, ie one makes a tapping sound through the speaker and sounds similar to the noise on start up. I swapped the tubes around to see if it was a bad tube but this made no difference, the same tube noise was in the same socket, so I gather this has maybe something to do with the tube socket ??. I also tried contact cleaner on the tube and pushed in and out of the tube socket a few times.
The amp was serviced when I 1st picked it up a bit over a year ago - 2 EL34's and one pre amp tube were replaced, I noticed that on loud playing in a heavy metalica black album sort of tone, I could hear a very slight crackle noise (at high volume) but I never bothered about taking it back because I thought that it was because it was the combo vibrating at higher volumes. I noticed this sound on start up after a holiday trip down to see family, I took this combo down with me, it traveled about 2000km, and the crackle happened on its 1st start up on the trip. Since then it really hasnt been used too much because of the noise, but im sure the trip down is what caused the crackle noise.
Is there something I can do with the tube socket, the actual tube is tight in the pins by the feel of it, but the tube can wiggle very slightly. What do you think I should do, pay for the amp to get fixed by the tech, or attempt to do this myself ??
Any Ideas
Pics
Casey
I think I have a little problem with my Mark III - blue stripe combo, geq, rev (EL34 modded) export - 60wt, I noticed that when I would turn the stand by on after warming up, the amp would crackle very loud, it doesnt matter if the input jack is pluged into a guitar or not, but when it does make this crackle noise there is flashes of blueish light on each tube, it happends on both tubes simultaneously. This slowly goes away, also I cant turn it down as the volume makes NO difference to the crackle sound - even if there is NO volume on it makes this sound, you can hit the combo with your hand and the noise would sound.
Another thing that I noticed, if I tap one of the power tubes, one would make the crackle and rattly sound, the other would make NO crackle or rattle, ie one makes a tapping sound through the speaker and sounds similar to the noise on start up. I swapped the tubes around to see if it was a bad tube but this made no difference, the same tube noise was in the same socket, so I gather this has maybe something to do with the tube socket ??. I also tried contact cleaner on the tube and pushed in and out of the tube socket a few times.
The amp was serviced when I 1st picked it up a bit over a year ago - 2 EL34's and one pre amp tube were replaced, I noticed that on loud playing in a heavy metalica black album sort of tone, I could hear a very slight crackle noise (at high volume) but I never bothered about taking it back because I thought that it was because it was the combo vibrating at higher volumes. I noticed this sound on start up after a holiday trip down to see family, I took this combo down with me, it traveled about 2000km, and the crackle happened on its 1st start up on the trip. Since then it really hasnt been used too much because of the noise, but im sure the trip down is what caused the crackle noise.
Is there something I can do with the tube socket, the actual tube is tight in the pins by the feel of it, but the tube can wiggle very slightly. What do you think I should do, pay for the amp to get fixed by the tech, or attempt to do this myself ??
Any Ideas
Pics
Casey
