that is good that it wasnt worst case. : )
That's right, Howdy ya'll.
Haven't been here in many moons squared.
Hope you'all are doing well and I see we are still
alive and well.
+ 2 What the other's have said.
Including, that power transformer is beyond the end of its useful life.
The enamel coated...
Don't feel bad brother. Sometimes I take years to figure out.
Sometimes you never do. Your just too close to see it and
you don't feel like...
I should have realized this sooner.
The replaced pot, the TremVol pot was damaged.
Don't know if the unit came that way or damaged in shipping...
I did the mods on a friends amp. It really made a difference along with a new speakers.
Unfortunately, I also told him I wouldn't keep the...
Here is the AC30 that I've got and gave up on and recently working on it
again. These are pics from the late 80s hand wired LTD edition from
Yeah, your memory is pretty good, especially in dealing with
the definitive British amp. The tube numbering scheme would
make even Spock cringe...
I'm thinking the problem may be with the normal volume pot,
Center tab thru 220K connects to the 500pf cap at A17
Right tab connects to .047uf cap...
That is a whole lotta fun in that amp.
I'll have to post some pics.
Trying to resurrect an old AC30. Not that old,
is the SS rectifier one.
Horrible hum, and pots/parts replaced...
I would make sure to change out the white electrolytic in the
trem circuit. I've seen more than a few of these blow up in an amp.
Will do and I'll let you know the result.
The Nerdy One
Bias fine with no signal; my bad it has a load.
Also the amp is in spec during idle conditions. Then when a signal applied,
Gotta quick Ampeg Bias problem. The amp is within spec with no load.
.072 v on the power tubes and balances fine. I changed the bias...
It depends on the caps you are going to use and where.
Certain paper in oil caps are fantastic, some are hype.
What is the difference in...
All very good points and very well taken. Perhaps I should do change out the jacks with the standard switch craft jacks? Have...
I've looked around and I'm trying to get some Hot Rod deluxe
amps for kids at my school. I've gotten grants from people,
And here I was thinking of cigarette smoke. From a fire though is
another story. For the smell use some Flax (linseed) based soap.
I know what you mean.
No wonder Kevin O'Connor complains about these amps.
They are just not obvious in their layout and have wires
While you got it apart might as well do 'em all and
the Power supply electrolytics too.
You sure it is smoke damage and not rust?
Smoke would wash off with a mild detergent and water.
If you are talking about pitting nothing you can...
That is kind of what I was thinking.
I've got two here including:
One, that has been hacked and never worked correctly since.
I checked and another SVT that I have, has both the R24 and R25 value
resistors as 47K. This is the later model with a stock 12AX7A...
Checking out the mods for the SVT some of the following questions
From the Tube Amp Book (4.1 ed, p. 278) and (Deluxe...