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  1. Replies
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    I see, in the schematic it is a single. I...

    I see, in the schematic it is a single.

    I might surmise that the double used has the two elements wired in series, so twice the off resistance. SInce it is used as a series element in the voltage...
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    I don't follow. I see a single in the reverb...

    I don't follow. I see a single in the reverb return circuit. Turns the signal off and on into the summation stage V3b.

    The doubles both seem to be in the PUMP circuit.
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    SOmetimes there are screws hidden under the...

    SOmetimes there are screws hidden under the plastic end caps.

    Not 10-32, but maybe M3 or M4. M5 even.


    Xtian, those yogurt cups look like they'd work, but I think they work better if you open...
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    I am definitely anal, my wife calls me an asshole...

    I am definitely anal, my wife calls me an asshole all the time.

    I doubt there will be open holes now. Look for screws on some one purpose and there are eight of them. I'd wager that is where...
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    I used to use 35mm film cans, but who has those...

    I used to use 35mm film cans, but who has those anymore? Now I use pill vials - I take lots of meds. When I take something apart, I stash each type of screw in its own jar. BY type, I don't mean I...
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    MAy I suggest: instead of hoping to find a list,...

    MAy I suggest: instead of hoping to find a list, try finding out. Just disconnect one end of the cap. Now did the issue stop? Or does the amp still make the noise?

    The key to troubleshooting...
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    To me it means Loud Thud, a regular member here. ...

    To me it means Loud Thud, a regular member here. Often provides good experimental data.
  8. Replies
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    Me too, I suggest it in #14, but he apparently...

    Me too, I suggest it in #14, but he apparently wasn't interested.
  9. I am glad you found it. I must admit my first...

    I am glad you found it. I must admit my first reaction wsa the famous EL84 tubes rattling. The Classic 30 is so prone to thins, I used to market a tube retainer to clamp them in firmly. Mine...
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    Google "Gretsch 6160 Chet Atkins" and see the...

    Google "Gretsch 6160 Chet Atkins" and see the results. The first two hits showed similar. Difference between looked more like the lighting than different fabrics.

    Tan/beige sounds like a good...
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    Bad power tubes VERY often burn up a screen...

    Bad power tubes VERY often burn up a screen resistor.

    Do you know that the various components have characteristic smells when they burn up? Oh, not 100%, but mostly. An experienced nose can tell...
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    With 0v floating, then the DC supply to those...

    With 0v floating, then the DC supply to those tubes is like a battery.

    Unless we specifically have a situation like a cathode follower, elevating DC heaters doesn't do much. The whole point of...
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    Wait. You fixed the amp, and it worked fine,...

    Wait. You fixed the amp, and it worked fine, right? Then you put different tubes in it and it went PFFT. Why oh why would you then think it needed a transformer instead of thinking the new tubes...
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    And this address is the one to use: ...

    And this address is the one to use:

    customerservice@peavey.com
  15. Replies
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    Some of the heaters are running on 12vDC. The...

    Some of the heaters are running on 12vDC. The 12vDC supply has o and +!@ terminals/ Neither is ground, so yes, it floats.

    Elevated heaters is simple. Connect it to a DC voltage. Typically we...
  16. Na-OH, Na-a-a-OH. DAylight come and me wan' go...

    Na-OH, Na-a-a-OH. DAylight come and me wan' go home.


    Come mister pickup man sodium hydroxide
    Daylight come and me wan'go home.
    Cleans me wire off, source of me own pride
    Daylight come and...
  17. It isn't across the line, it is across a...

    It isn't across the line, it is across a transformer secondary. No matter what the part may do in a failure mode, it cannot cause any connection to the mains and the danger there.

    As to why...
  18. Q: clearly you have the chassis out on the bench...

    Q: clearly you have the chassis out on the bench since you are grabbing parts. But can you hear this when the amp is assembled into the cab? In which case why fix it. If the cap is really noisy,...
  19. If you were an Asian manufacturer wanting to make...

    If you were an Asian manufacturer wanting to make cheap knock-offs, would you make them look different? Or would you make them look like the expensive, high quality ones?


    I have some really...
  20. I have a small square of emery cloth on my bench...

    I have a small square of emery cloth on my bench for just this purpose. 400 grit,I think, but it isn't critical.

    SOmetimes I reach for my Xacto knife and scrape the leads clean.


    SOmetimes I...
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    C62 really ought not get hot unless backwards.

    C62 really ought not get hot unless backwards.
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    I have a pair of L100s I have had for decades. ...

    I have a pair of L100s I have had for decades. Nice speakers.

    I'd suggest not trying to define the Peavey with stereotypes. It isn't a hifi and is not designed to be, but distortion in a...
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    It takes up less room than the traditional donut.

    It takes up less room than the traditional donut.
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    The core is not circular, it is shaped more like...

    The core is not circular, it is shaped more like a racetrack. Windings aren't spread all way around.
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    HA area later series. My records show a plain...

    HA area later series. My records show a plain old 1400, but my files are in storage.
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    Certainly you can.

    Certainly you can.
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    Never assume. And no offense intended, but when...

    Never assume. And no offense intended, but when there is a problem troubleshooting a two-tube circuit, I can't assume that "Oh, don't they just plug in?" isn't part of the problem.
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    Not a probllem. OK, just an odd thought. ...

    Not a probllem.


    OK, just an odd thought. Look on both the rectifier tube and the power tube. Is it possible teh plastic peg in the center of the ring of pins is broken off? That would allow...
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