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randall 1992 12" guitar amp noise cutting off

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  • randall 1992 12" guitar amp noise cutting off

    a while back my randall amp starting cutting off
    at first the distortion ch. would start to leak into the clean ch.
    making it sound just slightly distorted......I always had the selector switch set to clean so i dont understand why the clean ch. would leak distortion

    after a while the volume began to decrease...if i held the reset switch in the back for about 20 sec. all would be normal again
    this stopped working after a while

    now i can barely hear my guitar at full volume on the amp
    all that remains is a whisper and some crackle

    sometimes out of nowhere it will start working but no longer than 1 hour or so

    it has no tubes whatsoever
    no fuses that i can see
    (ill post a pic of the inside as soon as i get it opened)

    i sent it to a friend and he said the volume pots were dirty as well as the inputs...he said there was alot of grime
    he said the speaker was in near perfect condition
    it worked like if it was brand new but only lasted a week

    im a newb at amp repair and I would appreciate any help
    thanks for your time!

  • #2
    i took these pics
    the soldering my friend did looks solid




    again i see no fuses

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    • #3
      Try this: take a spare guitar cord and plug one end into the effects send jack, then plug the other end right back into the effects return jack. If this restores the sound, then the return jack needds service or replacement. If the amp has a pair of jacks marked preamp out and power amp in, you can do the same test with them.

      Put the amp back together first.
      Education is what you're left with after you have forgotten what you have learned.

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      • #4
        OMG!!!!!!!!!!!!!!
        holy crap! its working like if its brand new again!!! except for a low buzz
        but as long as i get ear blowing volume its not that big a deal
        damm thanks enzo I owe you one !
        this thing was out of comission for like 2 years hahahhaha

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