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    Yes I use it on tube amps. Actually I use it as a...

    Yes I use it on tube amps. Actually I use it as a listening device plugged into a ss amp and as a signal injector with it plugged into a CD player. Quick and cheap way to find where you are dropping...
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    diystompboxes.com/pedals/debug.html Take a...

    diystompboxes.com/pedals/debug.html Take a look. May be just what you want. Been around a long time. I use it. It works.
  3. What do you get if you pull the tube and measure...

    What do you get if you pull the tube and measure voltage on the pin at the tube socket?
  4. The Mosfet as supplied by Dana Hall is an NTE...

    The Mosfet as supplied by Dana Hall is an NTE NTE2973. I have it in my hand. The drawing from him that I have for the installation in the 18watt lite IIB circuit shows the Mosfet as a NTE2377. He...
  5. According to your description this is correct. l...

    According to your description this is correct. l have the Hall VVR package with the drawings and schematic. Will share if you need and I can figure out how to post them..
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    If you can get to it, may have to be a member,...

    If you can get to it, may have to be a member, take a look at Jensen AS045 or AS061. It is Jensen's design for guitar line out. Weber use to sell a xformer to do this. Don't know if they still do....
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    I think Fahey is on to it...I would for sure...

    I think Fahey is on to it...I would for sure check the OT. The tester he speaks of use to be on R.G. Keen's site. Don't think it is there anymore. Do a search for "The Super-secret Transformer...
  8. Looks like a diode problem but just in case you...

    Looks like a diode problem but just in case you want to test the PT, take a look at this: https://www.premierguitar.com/articles/the-super-secret-transformer-tester-1
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    I wanted to follow up on this problem and not...

    I wanted to follow up on this problem and not leave it hanging...Enzo, as usual, was correct. The problem was with the contact of the bridge rectifier...I desoldered the rectifier to get a look at...
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    Guess I did the search wrong...Everything I saw...

    Guess I did the search wrong...Everything I saw said obsolete. Same with digi key and Newark.
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    J174 transistor

    Was going to order J174 transistor from Mouser and they show it to be obsolete. What are you guys using a a direct replacement for the J174? Maybe the J175.
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    I'm pretty dumb about a lot of this stuff but I...

    I'm pretty dumb about a lot of this stuff but I have to ask if anyone has actually measured 100 watt at the speaker with an amp that is running 4 6l6's? With a max anode dissipation of 30 watt per...
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    Thanks Enzo, It sure seems that is the case. That...

    Thanks Enzo, It sure seems that is the case. That part of the circuit is so simple that can't much else go wrong. I thought about reusing the BR but then decided that if I am going to the trouble to...
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    Well the dang thing played for 4 hrs. and never...

    Well the dang thing played for 4 hrs. and never missed a beat. Shut it down let it sit fired it back up and it failed in about 15 minutes. Back to the drawing board. I am going to replace the BR. I...
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    probably thinking of the DL 50. It uses a BR62...

    probably thinking of the DL 50. It uses a BR62 which is 6A... Think they had a lot of trouble with that one. I have the amp up and running. Using a CD player to input into it. Going to let it play...
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    The BR is a Rectron BR102 which is 10 amp 200...

    The BR is a Rectron BR102 which is 10 amp 200 volt and it does have a small air gap between it and the board. You thinking go to a 104?
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    Thanks for the reply and the caution. Yes I have...

    Thanks for the reply and the caution. Yes I have the tools and equipment. The readings I got makes me think that I have a cold solder joint at the BR. There was one joint on the BR that looked like...
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    Need help with a Marshall TSL60

    Schematic is here: https://el34world.com/charts/Schematics/files/marshall/Marshall_jcm2000_tsl60_60w.pdf

    This amp will play for a while and then no sound. It looses the DC filament voltage to the...
  19. Headphone...

    Headphone trick....http://www.ax84.com/faq.html#hp-tri see #16
  20. Try the old headphone trick to check transformer...

    Try the old headphone trick to check transformer hum in different locations.
  21. Are the dimensions cut out size or location of...

    Are the dimensions cut out size or location of the holes?. Anyway If your xformer is smaller, see if you can make it work using Fender Washers.
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    give this a...

    give this a shot::https://www.premierguitar.com/articles/the-super-secret-transformer-tester-1
  23. swap tube 4 with another tube and...

    swap tube 4 with another tube and remeasure....See if the problem goes with the tube.
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    I think that the guy at Dirty Dawg went out of...

    I think that the guy at Dirty Dawg went out of business years ago. Think his shop burned and he never started up again..There is a shop in little Rock arkansas that does good work and low cost...ZH...
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    This works....

    This works. https://el34world.com/charts/grounds.htm Me, I use a variation of that where I separate the pre amp from the power end...Don't solder buss to the back of the pots. Just run a...
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    If you are looking for the multiplier to use for...

    If you are looking for the multiplier to use for each rectifier tube, these are close: SS---1.414, 5Y3 (old original)--1.1, 5Y3 (new production)--1.3, 5U4---1.2..GZ34---1.3, EZ81---1.3. you have to...
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    Try Mouser. Search for flat cable.

    Try Mouser. Search for flat cable.
  28. there are so many good reverb pedals out there...

    there are so many good reverb pedals out there that I just don't bother adding reverb to a build these days. Only if I build an exact clone on request for someone.
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