#1
I'm currently having problems with my Peavey 6505+ 112. I recently took it to a tech a few months ago and a number of bad solder joints were fixed, which was the reason my power tubes weren't lighting up at that time.

A week ago when I turned my amp on, no sound was coming out. There is hiss, which increases slightly as I turn the gain up. I checked tubes, the power tubes were glowing (possibly not as bright as usual?). I changed the pre tubes one by one, swapping them out, but to no avail.

The only way I could get sound out of it was to plug my guitar lead into the return of the FX loop.
Anyone have any ideas what the problem could be?
#2
The problem is in the preamp somewhere. Is it possible your test tube was faulty?
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


Cathbard Amplification
My band
#3
I'll do another run through of changing preamp tubes, but I doubt it somehow, tubes are all stock except for two JJs that I replaced the AX7s with. I used the old AX7s as a replacement, but I doubt they will have failed, seeing as they've just been sitting on a shelf?
#4
You might get one faulty outa da box but not a whole issue of them.

My money's on a faulty solder joint in the preamp section, maybe even the input jack. Hard to say. But one thing's for sure; it's in the preamp.
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


Cathbard Amplification
My band
#5
my 18w was down for a few days, (i built it, i solder well), i just touched up the input jack and switches, grounds, and then reflowed the solder in the tube sockets, fire it up. perfection.

just a few things to consider, all issues are different. mine was a bad joint on the input and a 12ax7 socket.

took all of five minutes.
WTLT 2014 GG&A

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