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    I was a Fostex service center, all the manuals I...

    I was a Fostex service center, all the manuals I have are service manuals. The double speed feature shouldn't affect the power supply and related issues.

    https://americanmusicandsound.com/

    You...
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    It is a four pin, but not an XLR, but that...

    It is a four pin, but not an XLR, but that doesn't help you.

    I might heat the sheath with a heat gun, staying back far enough not to melt it. I might wedge small screwdrivers under the edge or...
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    I have the X18 manual somewhere. What is...

    I have the X18 manual somewhere. What is difference from X18H? Mine is in storage, and right now it is too cold and snowy to go over there and root around.
  4. Just a quick check. Nothing left to power up...

    Just a quick check. Nothing left to power up except the power cord, fuse holder, switch, wires. It won't DO anything, but for example I once found a power toggle switch that had an internal short...
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    Um... U3-1 has -2vDC? Instead of -1.6vDC? I...

    Um...

    U3-1 has -2vDC? Instead of -1.6vDC? I don't see that on the schematic. At that pin I see TP10 with 785mvAC. That means signal.


    Please clarify.
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    Helms, I think the transformer has two terminals...

    Helms, I think the transformer has two terminals broken off, so it LOOKS like two wires only, but is a transformer nonetheless.
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    How much do you figure the drop changes? at 9v,...

    How much do you figure the drop changes? at 9v, we see 0.9ma through the diode, at 12v we see 1.2ma. SO would 0.3ma change the drop voltage that much? Not to mention the 10k base resistor in...
  8. Just for grins, disconnect the primary wires too,...

    Just for grins, disconnect the primary wires too, and power up. Want to make sure there is not some short on the mains side.
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    By the way, the diode bit was to isolate the...

    By the way, the diode bit was to isolate the defective JFET, but that doesn't mean the diode can't be bad TOO. Lesson was just don't assume the last place you look is as far as it goes.

    Do the...
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    Oor... Maybe it really ISN'T speaker driven....

    Oor...


    Maybe it really ISN'T speaker driven. I have some Gibson amps where the transformer drive has the transformer primary wired to B+ and drive tube plate like all the Fenders. And the...
  11. Thread: Banner ads

    by Enzo
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    No one reads the "agreement" and I'd wager it is...

    No one reads the "agreement" and I'd wager it is in there.

    I'm no criminal either. But I don't want to get on a mailing list asking for money for candidates I seem to support. If I watch PBS, I...
  12. Thread: Banner ads

    by Enzo
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    Interesting that it says listening to words would...

    Interesting that it says listening to words would require translating spoken into print, and that would be too clumsy. But really? You have Alexa? You have Siri? Those listen to spoken word and...
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    This is extremely common in Gibson/Epiphone amps....

    This is extremely common in Gibson/Epiphone amps. I have one model I have SIX different schematics for. pretty much if the lineup of controls was right, it didn't much matter to them what circuit...
  14. Thread: Banner ads

    by Enzo
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    I have a couple fake emails on Gmail. I use them...

    I have a couple fake emails on Gmail. I use them when I have to join something. I also have a fake Facebook account I never use, it was why I made my first fake email address. But I wanted to join...
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    That is one thing I teach techs - it is OK to...

    That is one thing I teach techs - it is OK to decline repairs.
  16. Thread: Banner ads

    by Enzo
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    I don't have or carry a phone. At the store, it...

    I don't have or carry a phone. At the store, it asks for my phone number and a PIN. That is how I log my purchases in their loyalty program. My phone number is my account number. But the program...
  17. Thread: Solarus tubes

    by Enzo
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    They used the 6AN8 with the KT88 amps, and the...

    They used the 6AN8 with the KT88 amps, and the 7199 with the EL34 amps.
  18. Thread: Banner ads

    by Enzo
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    I just use plain old Chrome. I think I have my...

    I just use plain old Chrome. I think I have my privacy settings fairly tight, I'll check. But again. I don't really sweat it paying attention to what I am doing on the computer. I am just kinda...
  19. Thread: Banner ads

    by Enzo
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    My concern isn't the ad being there. I am used...

    My concern isn't the ad being there. I am used to a direct result of a google search turning into an ad. But this is removed. This is purchases elsewhere turning up in a banner ad here. With ZERO...
  20. Thread: Banner ads

    by Enzo
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    Banner ads

    I am used to the banner ad up top. It advertises all kinds of things. But as soon as I research anything... When I post I often open a side window to go to Mouser and check out relays, or go to...
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    Under rated? Certainly there is minimal current...

    Under rated? Certainly there is minimal current involved, and we are not going anywhere near 100v. 1N4148 is fine. Or 1N914 if you have them instead. I also was a Fender warranty station for...
  22. Sure, you could do that. Or tack solder a jack...

    Sure, you could do that. Or tack solder a jack into the circuit just during tests. ANy way you can think of to get a guitar signal into it.
  23. COnsider: Guitars have unbalanced outputs. The...

    COnsider: Guitars have unbalanced outputs. The inputs on this amp appear to be XLR for low-Z inputs, and that is what the transformers are for. You don't need them, you can ditch the transformers...
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    Easiest way to add a couple stages for more gain...

    Easiest way to add a couple stages for more gain is...use a pedal.
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    And all those unknowns are why they approach...

    And all those unknowns are why they approach these outbreaks so aggressively.

    When I was a kid Measles ran rampant through kids in schools. Chicken pox too, they were super contagious. I never...
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    That misses the point. They are scared to death...

    That misses the point. They are scared to death that this COULD be the next big disease that kills millions. Car crashes don't infect people and spread. We will kill 30,000 - or whatever - this...
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    Pick up the phone and call them.

    Pick up the phone and call them.
  28. Well tiger, 4722 is the type I linked selling for...

    Well tiger, 4722 is the type I linked selling for $600 a pair. You got $1200 of transformers sitting there.
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