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Amp distorting now and again?

Discussion in 'Amp Central Station' started by PeterVV, Apr 15, 2014.

  1. PeterVV

    PeterVV Tele-Afflicted

    Sep 14, 2011
    South Wales, UK
    Last gig my HRD sounded as though it was going from clean to distortion now and again?, could have been my imagination, but in case it wasnt, what could cause this?. The Amp is only 3 months old, and the volume was only on 4.? I always use it clean , and add pedals in the chain.
  2. stnmtthw

    stnmtthw Friend of Leo's

    Apr 2, 2012
    New Mexico
    Loose tubes? Did the amp get dropped or suffer some kind of shock?
  3. Wally

    Wally Telefied Ad Free Member

    Mar 17, 2003
    Lubbock, TX
    Well, if it wasn't the amp but rather your ears or your perception; one might be really worried that your days as a musician are numbered!!! Gulp! ('^)
    SEriously, check the amp out using nothing but a guitar and the amp. Switch in and out of the Gain channel. Make sure the amp is working as it should. IF it isn't, you have found a problem. IF the amp is workign as it should, then hook your rig up as you use it....adn see if you can replicate the problem. IF you can, then one might think the problem is not in the map but rather in the effects.
    Causes???? Lots of options. You have to sift through the stuff.
  4. steveneddy

    steveneddy Tele-Meister

    Jan 16, 2012
    I have experienced that issue before in a HRD.

    It is in the channel switching circuit.

    I don't remember specifically - but trace the circuit.

    I've seen the jack go bad - that's an easy one.

    I've also seen the chip go out - I think the opamp or one of the JFET's in that circuit.

    It's been a while since I've been inside one of those - but that's what I remember about that problem.

    Here's something about that problem at the amp Garage forums:

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