Moderator: longfxukxnhair
If it is the one is this thread, take it out. I had to remove mine as well.MacFangus wrote:Thank you!
I have the chassis out now. There is a resistor soldered to PIN 5 (green wire) on one of the power tube sockets... Is this normal? It's on the socket closest to the transformers. I was running it last night, and began to get very noisy. I looked in the back of the amp, and noticed that the tubes were red plating, so I shut it down.
YesDon't I need to put a new HT fuse in before testing?
I had a pair red plate while a friend was repairing my Vibrolux and he just replaced them. Maybe there isn't much to it though, I was just repeating what he told me.Damn! I've been using these SED =C= 6L6 tubes for about 3 months in my other amp, with no issues at all. Are they now trashed from the red plating? I put them on my Hickok tester this morning, and they test okay.
It didn't effect mine in that way. However, Anitoli is the grand master of repairing these so, wait for him to answer.Do you think this 5.6k resistor @ V11 could have had anything to do with the fuse popping?
I think mine is the same, since they aren't foot switchable, I am not sure the engineers really cared much. Although I would have to say, mine could just be broken in the same way yours is. Did I mention Anitoli is the grand master of repairing these amps.What about the volume differences when switching between modes A (JTM45) B (Plexi) C (JCM900)? There's a substantial difference in volume between the modes, which I suppose may be normal? When I change modes (channel 2) I have to either raise or lower channel 2 volume, depending on the mode I'm in.
If the volume thing is permanent, these are excellent pedal platforms. Pick the three channels you want and add a pedal or two for the fourth and or fifth.Even though I'm having issues, I really dig this amp! I want to get it working properly, and make it a keeper.
If the HT fuse didn't blow, it doesn't need to be changed.MacFangus wrote:Thank you for the replies. Don't I need to put a new HT fuse in before testing? I have some on the way... They will be here in 2 days.
Damn! I've been using these SED =C= 6L6 tubes for about 3 months in my other amp, with no issues at all. Are they now trashed from the red plating? I put them on my Hickok tester this morning, and they test okay.
Do you think this 5.6k resistor @ V11 could have had anything to do with the fuse popping?
What about the volume differences when switching between modes A (JTM45) B (Plexi) C (JCM900)? There's a substantial difference in volume between the modes, which I suppose may be normal? When I change modes (channel 2) I have to either raise or lower channel 2 volume, depending on the mode I'm in.
Even though I'm having issues, I really dig this amp! I want to get it working properly, and make it a keeper.
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