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  1. Replies
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    That was going to be the next thing I was going...

    That was going to be the next thing I was going to suggest to look at too. Nice 👍 Glad you got it all working.
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    88

    Does that last post mean you got it working? I...

    Does that last post mean you got it working? I read the post before edit and you said after isolating the jack it was quiet with no guitar plugged. But it was loud as hell with cable plugged in,...
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    88

    Those two black plastic rings appear to isolate...

    Those two black plastic rings appear to isolate the new input jack. How did you install them?
  4. As far as this internet lore of 70% of max idle...

    As far as this internet lore of 70% of max idle dissipation, I don't follow along. Most traditional tube amps that I bias are somewhere between 40-60% max idle dissipation. I am all about tube...
  5. What's on schematics doesn't always match up...

    What's on schematics doesn't always match up perfectly. Typically it's higher B+ readings since line voltages were lower back when these amps were made. Maybe there were versions of the amp that had...
  6. Strange that plate voltage readings appear low...

    Strange that plate voltage readings appear low and increasing the bias will only lower plate voltage even lower. At -31v bias supply I would expect higher bias readings from the tubes that you got...
  7. Just a small thing to bring up is that the...

    Just a small thing to bring up is that the schematic shows 6L6GC as the tubes. What version of 6L6's are in there now. They might be rated at 30 watts and not 25 watts. I might have missed something...
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    It also appears to me that when the MV boost is...

    It also appears to me that when the MV boost is engaged that something is changing from the gain stage from reverb stage tube. Not saying I understand it but I do see a switch 5 (in a triangle shape)...
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    826

    How do those sprague caps vent if they become...

    How do those sprague caps vent if they become leaky? I mean does the electrolyte spew out into the empty space that encapsulates it? Could that be better than all over the circuitry?
  10. Isn't 70v the output used for outdoor speakers or...

    Isn't 70v the output used for outdoor speakers or something?
  11. Replies
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    Yup schematic time since flying blind is not very...

    Yup schematic time since flying blind is not very resourceful. When you post the schematic measure resistance from every output transistor leg to ground. Got make sure those aren't shorting to ground.
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    I have used a tiny dab of toothpaste to buff out...

    I have used a tiny dab of toothpaste to buff out scratches on some plastics. I say "some" because it doesn't always work. If it a lense or something it will probably work okay. Use microfiber cloth...
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    That schematic is not downloading. Here is...

    That schematic is not downloading. Here is another to post here...
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    Well I would hope even the most generic modern...

    Well I would hope even the most generic modern caps would be an improvement when replacing 50-60 year old caps. What I avoid when buying components is the snake oil expensive stuff that only cork...
  15. Did you mean JCM2000 DSL 100 or something?

    Did you mean JCM2000 DSL 100 or something?
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    That is a beautiful amp! Looks to be very well...

    That is a beautiful amp! Looks to be very well made and it's in great condition. Thanks for sharing some pics. Would love to a picture of the speaker when you get to it. Score!!
  17. I am pretty sure it is well known now that the...

    I am pretty sure it is well known now that the black glue they used on their monitors was conductive. The EEVblog was the place I remember watching a repair video where this became apparent. There...
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    Yeah I can imagine the design guys going "Let's...

    Yeah I can imagine the design guys going "Let's use really dark colored glue so people will see the mess we made with it".
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    That's a pretty expensive capacitor.

    That's a pretty expensive capacitor.
  20. Wow!! Read many threads here where the OP posted...

    Wow!! Read many threads here where the OP posted about getting the flu and hadn't gotten to work on the amp lately. But civil unrest against the government and a chaotic situation like that takes the...
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    Sticky: Very cool thanks for sharing!! My first encounter...

    Very cool thanks for sharing!! My first encounter with the mercury vapor tubes was when I replaced one on an Hickok tube tester. Scrolled through that article and it mentions why they used those...
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    I have seen where people have cleaned the carbon...

    I have seen where people have cleaned the carbon track with a pencil eraser ✏️. Many old pots can be taken apart to the point where the inside wafer is completely accessible. If the eraser trick...
  23. Check the link, it shows the cost in the US from...

    Check the link, it shows the cost in the US from Reverb.com
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    This was another piece of gear that was passed on...

    This was another piece of gear that was passed on to me from my Grandfather.
    55540
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    Okay the selling point question is... does it...

    Okay the selling point question is... does it come with the pencil ✏️ included?
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    This one has the silicone type tip adapter. Looks...

    This one has the silicone type tip adapter. Looks like you cut selected lengths and put it on the main tip. Probably not what you had in mind but I wonder if this one works well?
    ...
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    Just in the shop tonight and this Tenma...

    Just in the shop tonight and this Tenma resistor/capacitor meter was struggling to read a 22 ohm resistor. It read the 4.7k just fine, probably battery low. So bust out the Fluke 189 and no issues....
  28. Had an Orange tiny terror type amp come in where...

    Had an Orange tiny terror type amp come in where customer had changed the el84's and they just weren't passing signal very well. Inspected the tubes and that red enamel was all over the grid pins....
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