Search found 1125 matches

by Richie
Mon May 18, 2015 2:36 am
Forum: Technical Discussion
Topic: Gibson GA40T Les Paul Schematics
Replies: 11
Views: 2575

Re: Gibson GA40T Les Paul Schematics

Might get a few of the 5879, and go through some to find a good one.
by Richie
Sat May 16, 2015 2:47 am
Forum: Technical Discussion
Topic: Gibson GA40T Les Paul Schematics
Replies: 11
Views: 2575

Re: Gibson GA40T Les Paul Schematics

Here is some info. I would say[but just guessing] it would be the GA40.. So, you'd have to ask your friend to be sure that is the correct model. Buffalo amps use to build a clone of the Gibson amp,and also Victoria. According to the 1958 Gibson catalog it would be the 2-tone amp,and it would have th...
by Richie
Thu May 14, 2015 12:43 pm
Forum: Technical Discussion
Topic: Gibson GA40T Les Paul Schematics
Replies: 11
Views: 2575

Re: Gibson GA40T Les Paul Schematics

The Gibson amps can get confusing. You may have to ask your friend more details in what the amp looked like.. But basicly most of them were the same except in construction from hard wired, then to eyelet boards, or different looking cosmetics of the outside, or the LP logo to the 2 tone, tweedy look...
by Richie
Sat May 02, 2015 6:13 pm
Forum: Technical Discussion
Topic: Labeling Miniature Tubes
Replies: 13
Views: 1552

Re: Labeling Miniature Tubes

xtian wrote:I might try a silver Sharpie oil based pen. The pigment should stand up to plenty of heat. And the tip is small enough for fine writing.
Yep, what he said, its easy to write on the base of the tube,and easy,if wanted to remove the writing.
by Richie
Fri May 01, 2015 5:58 pm
Forum: Trainwreck Discussion
Topic: Trainwreck Facebook Page
Replies: 11
Views: 2692

Re: Trainwreck Facebook Page

Well I think thats the only one thats been built with an IEC so far. What don't you like about IEC sockets? Its not that I think they "sound" better. Usually the IEC cables are not very good quality, and smaller in size. Plus I have had amps here that had noise, because the molded plug not making a...
by Richie
Fri May 01, 2015 5:47 pm
Forum: Technical Discussion
Topic: JTM45 internal jumper noise
Replies: 8
Views: 1112

Re: JTM45 internal jumper noise

If you jumper inputs, its best to use a good quality cable,and small in length. Some people Jump or bridge channels in different ways. I guess whatever one likes. Hendrix used a Y cable. A little different ,but still much the same.
by Richie
Fri May 01, 2015 5:42 pm
Forum: Trainwreck Discussion
Topic: Trainwreck Facebook Page
Replies: 11
Views: 2692

Re: Trainwreck Facebook Page

Possibly. Although the photo of the rear of the amp shows what looks like a standard output transformer. Power Transformer however is centred with the output transformer and looks a bit larger than the originals. I thought the PT was always off centre? Interesting valve cover as well. There is also...
by Richie
Sat Apr 04, 2015 2:23 pm
Forum: Technical Discussion
Topic: 36 watt build - at least it doesn't squeal
Replies: 19
Views: 4347

Re: 36 watt build - at least it doesn't squeal

A few things about the amp and different layouts and schems. Over the years, Some things depending on the layout etc, have been changed,or were never corrected. And some have added their own take on the amp. One important one to keep the bass more adjustable, is changing the .022 cap in the tone cir...
by Richie
Fri Mar 27, 2015 10:04 pm
Forum: Technical Discussion
Topic: Help with Ampeg B15n diagnostics
Replies: 21
Views: 3075

Re: Help with Ampeg B15n diagnostics

The B15N though the years had some different changes made. One is the output plug/cable,and circuit. they had a protection circuit too. Might be a good idea to see if any of that has been changed. Many people want to use a reg jack. here is some info on them. http://www.premierguitar.com/articles/Am...
by Richie
Thu Mar 19, 2015 10:58 pm
Forum: Technical Discussion
Topic: 600v Mallory cap
Replies: 3
Views: 650

Re: 600v Mallory cap

And as in fenders, the first cap in line seems to go bad first.
Overlook that the pos and neg are not laying the way they should be, I just pulled it and threw it down and took a pic. :D

yes Leo, new fresh caps were installed, bias and bypass caps.
by Richie
Thu Mar 19, 2015 5:04 pm
Forum: Technical Discussion
Topic: 600v Mallory cap
Replies: 3
Views: 650

600v Mallory cap

I thought this might be interesting or maybe even a surprise to some. I have a Ampeg B-15 here,bone stock. Which had a leaking 600v electrolytic cap. You may see these caps used in other old amps. Some people use the old shell for looks,or to make them look more orignial. Or to just slide in new cap...
by Richie
Thu Mar 19, 2015 3:37 pm
Forum: Trainwreck Discussion
Topic: Rocket slowly dies out sometimes
Replies: 8
Views: 1741

Re: Rocket slowly dies out sometimes

Loss of heater connection or voltage,among many others, the amp may go quiet.
by Richie
Thu Mar 19, 2015 12:54 pm
Forum: Speakers and Cabinets
Topic: Danish oil finish on cherry head cabinet
Replies: 15
Views: 4358

Re: Danish oil finish on cherry head cabinet

I don't know the answer to the question about if it will effect it or not. But I wanted to mention that may help others or DIY people. I tried many different oils or rub in finishes. And the last one I used was the Tru Oil. [Birchstone Casey] By FAR, the easiest to use, and best finish or outcome ha...
by Richie
Thu Mar 19, 2015 12:17 am
Forum: Fender Discussion
Topic: Fender Pro Reverb UltraLinear (70w)
Replies: 64
Views: 9740

Re: Fender Pro Reverb UltraLinear (70w)

Richie, I ended up replacing both power tube sockets and triple checked the wiring, even checked another version of the same schematic to make sure. The latest voltages were without any tubes in the amp. Something has to be shorted. I've seen people that said they checked things 100 times, but stil...
by Richie
Wed Mar 18, 2015 5:59 pm
Forum: Fender Discussion
Topic: Fender Pro Reverb UltraLinear (70w)
Replies: 64
Views: 9740

Re: Fender Pro Reverb UltraLinear (70w)

can you post some pics of the output sockets? You replaced one? is it wired correct? Did you have these voltage readings before you replaced the socket?
What happens if you pull the output tubes, then measure the voltages? A few pics might help see whats going on.