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Thread: Spontaneous Amp recovery!

  1. #1
    mild old man perv Aceman's Avatar
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    Default Spontaneous Amp recovery!

    So, I thought it was my H2O pedal. Apparently not!

    Anyway, today I popped on my H&K TM18. The in/out fades of my H2O start happening with my Tech21 DLA. ^%$%#$!

    But...I collect my senses, turned everything on. Let it all warm up and ran through a serious trouble shoot.
    - Straight in - check
    - All channels - check
    - All wattages - check
    - Footswitch - check- FX loop - check!

    I have basically figured out that it just needs a couple of minutes of warmup!!! All good. If I slam it on and start playing...hinky weirdness.
    Last edited by Aceman; 05-11-2020 at 06:05 PM.

  2. #2
    of the Forum PFDarkside's Avatar
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    Default Re: Spontaneous Amp recovery!

    It might not be, but odd cutting in and out on a tube amp is usually a tube going bad. It might be a good opportunity to get your tube rolling on...

    Good news that the pedals are all fine and the amp seems fine too.
    Oh no.....


    Oh Yeah!

  3. #3
    Mojo's Minions
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    Default Re: Spontaneous Amp recovery!

    Sometimes solder joint and tube sockets become conductive after they warm up -be it a cold joint or tension fit.
    “For me, when everything goes wrong – that’s when adventure starts.” Yvonne Chouinard

  4. #4
    mild old man perv Aceman's Avatar
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    Default Re: Spontaneous Amp recovery!

    Cold Joint vs Tension Fit:

    Is either of those a tough/expensive fix if/when the time comes?

  5. #5
    Mojo's Minions
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    Default Re: Spontaneous Amp recovery!

    Quote Originally Posted by Aceman View Post
    Cold Joint vs Tension Fit:

    Is either of those a tough/expensive fix if/when the time comes?
    Nope -in fact they are probably the 2 easiest.
    “For me, when everything goes wrong – that’s when adventure starts.” Yvonne Chouinard

  6. #6
    A Ficus ehdwuld's Avatar
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    Default Re: Spontaneous Amp recovery!

    my Belair had a howl some years back
    touching the solder joints on the tube sockets with a hot iron solved the problem

    took longer to disassemble the amp than to fix it
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  7. #7
    Her Little Mojo Minion DankStar's Avatar
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    Default Re: Spontaneous Amp recovery!

    I love it when a plan comes together

  8. #8
    mild old man perv Aceman's Avatar
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    Default Re: Spontaneous Amp recovery!

    I was soooo missing Guitar > H&K > VS Chorus/Delay.

    Shame I don't play much Rush. It would kill for that! Maybe I'll relearn Limelight or something...

  9. #9
    PenultimateTone Member Demanic's Avatar
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    Default Re: Spontaneous Amp recovery!

    Freewill

    Sent from my Alcatel_5044C using Tapatalk

  10. #10
    Mojo's Minions ErikH's Avatar
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    Default Re: Spontaneous Amp recovery!

    Considering that it is a tube amp, yes, they need to warm up for a few minutes before playing through them. That's standard practice. Turn it on, leave it on standby.

  11. #11
    Mojo's Minions Ascension's Avatar
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    Default Re: Spontaneous Amp recovery!

    You running the effects through the loop? If so clean your jacks in the loop!! Fought that gremlin more than a few times!!
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  12. #12
    Super Toneologist Liam1963's Avatar
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    Default Re: Spontaneous Amp recovery!

    Everytime I perform a tube replacement, I always inspect the solder joints on the tube sockets, not only heat, but vibration can cause some sketchy behavior. There have been a couple of times where I have had to touch the tube socket solder joint(s) with a hot soldering iron.....

  13. #13
    Tone Member Bronze Buzzard's Avatar
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    Default Re: Spontaneous Amp recovery!

    My Randall RM50 does something very similar once in a while. That one ended up being in the fx loop. Every few months or so it will start gaining volume and then drop back down. It'll do it for a minutes, just up and down.

    I have to get contact cleaner and spray all 4 effects loop jacks and cables, and run them in and out a few times while wiping the cable end.

    It could easily be something else, but it's a good thing to check anyways. Doesn't cost you anything but a little time.

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