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    "I don't disconnect any wires, I pull off the...

    "I don't disconnect any wires, I pull off the knobs and remove the nuts and let the pots dangle "

    I'll send my Mesas to you then.
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    My periodic Mesa rant

    Customer asks if I will take a look at his Mesa Nomad 45 212 combo. Hesitantly, I tell him I will take a look, but I mostly don't like taking them on as they are insanely hard to service. He brings...
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    The 47uF was definitely the problem, it measured...

    The 47uF was definitely the problem, it measured 6 nF out of circuit. The 22uFs measured good, but I replaced them while I was in there. Now B+ is back to normal, only a volt or two of ripple, and...
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    Great job, and clever fix, but at some point...

    Great job, and clever fix, but at some point shouldn't we be asking ourselves at which point is this entirely too much work and time for what we are paid? I know I do, especially when it keeps me...
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    Actually, this amp gets used quite a lot, he gigs...

    Actually, this amp gets used quite a lot, he gigs like four times a week.

    edit: I was on a hold to not do anything more until he decided. He did decide to do the filter caps, and I cut him a break...
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    I get OL on my meter in circuit on the 47uF cap....

    I get OL on my meter in circuit on the 47uF cap. 20+ year old IC caps, time to go!

    It is going to be hard for him to swallow that this failure came two days after some other work was done.
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    Sorry for the bad camera work, not my strong...

    Sorry for the bad camera work, not my strong suit. This scoped at the 47mF cap. There is also 68vac ripple at that point. Also, the B+ is only 270vdc at that point, with the other nodes being low as...
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    "Randall, did you check the control grid and...

    "Randall, did you check the control grid and screen grid resistors on the power tubes?"

    They look good.

    The microphonic and bad new tubes were replaced, problem still exists. This is what it...
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    Another Blues Jr problem

    Same amp as previous post, different issue. I changed out the tube board and sorted out the ribbon issue, three wires on one triode needed to be switched around to accomodate this early green board...
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    I just had an exchange with an engineer at Shure,...

    I just had an exchange with an engineer at Shure, sent him pics. He said they have not used that connector for about 40 years, and they have no info on how it might come apart. I am at peace with the...
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    "What is the intended use? Could you just use a...

    "What is the intended use? Could you just use a standard 3 pin XLR? Is it possible to change the connector in the microphone? "

    It is intended to be used in a recording studio, and probably a...
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    It appears it was clipped from a handheld...

    It appears it was clipped from a handheld police/fire/cab mic with an on switch. This manual shows in spare parts as "cable and plug assembly", which is still being sold. It was never meant to come...
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    Exactly. Customer apparently got bilked on this...

    Exactly. Customer apparently got bilked on this one, thinking he was avoiding the cost of the alternative.
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    Yeah, but even if I do get the rubber off, it...

    Yeah, but even if I do get the rubber off, it sure doesn't look like those four pins are ever coming out of the shell, since it looks to me to be stamped shut. I think this is a lost cause.
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    I don't think it does unscrew. I will correct...

    I don't think it does unscrew. I will correct myself as Enzo said, it is not XLR, but an Amphenol MC4M. I think I'm getter warmer here, I found this:

    https://www.adorama.com/shc11c.html

    It...
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    Here it is with the rubber forced back and the...

    Here it is with the rubber forced back and the ring out of the way. I have made hundreds of XLR cables in my time, there is no set screw on this one.

    57052
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    "Maybe the rubber sleeve part stays put?" I'm...

    "Maybe the rubber sleeve part stays put?"

    I'm starting to believe that. Where you'd expect to find a set screw there is an indentation that looks like it was stamped in, causing it to bulge out on...
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    Odd Shure mic connector

    I'm trying to wire up this four pin XLR to a mic cable for an EV model 664 mic. Problem is, I can't seem to get the rubber sheath off. It doesn't want to slide off, and if I peel it back it appears...
  19. Never did get a call back, but I did get someone...

    Never did get a call back, but I did get someone from the seller, Traveler Guitars, on the line finally. Turns out what they sent doesn't work with this preamp. I still think an open reading says...
  20. And it just gets worse, the latest replacement...

    And it just gets worse, the latest replacement version is fixed at a 90 degree angle with a smaller male plug. You have to drill out the hole in the guitar, which is at about a 45 degree angle, to...
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    After some more sleuthing, it appears the ribbon...

    After some more sleuthing, it appears the ribbon traces that serve V1 are inconsistent with the original board. One triode is the same, but the other is not, so that would explain a lot. I have...
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    Blues Jr has me puzzled

    1998 green board blues jr comes in for losing power and cutting out, saying it comes back when he moves the speaker plug, and would I replace it with a better metal one. I point out his tube board is...
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    I'd look into Mojotone.

    I'd look into Mojotone.
  24. I have a problem with those single cup coffee...

    I have a problem with those single cup coffee makers with all the trash they cause. A disposable container for every cup of coffee just seems wrong to me.
  25. I work out of my garage, and I am technically in...

    I work out of my garage, and I am technically in a commercial zone. Best of both worlds.
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    It's been running right for some time, so I'm...

    It's been running right for some time, so I'm going call this one a wrap.
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    Blues Deluxe reissue odd issue

    Complaint is that it cuts out and comes back repeatedly. Sure enough, it works for about 1 minute, then abruptly cuts out for 1 minute, then comes back on, repeatedly. Tubes stay lit, confirmed it is...
  28. And a third one in this week, same issue.

    And a third one in this week, same issue.
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