Ibanez TSA15H - Bad Power Transformer ???

Discussion in 'Amp Tech Center' started by Bartholomew3, Aug 7, 2019.

  1. Bartholomew3

    Bartholomew3 Friend of Leo's

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    Amp sounds pretty good, put in a couple of JJ 6V6, biased by tech plus a couple of 12AX7 pre-amp tubes from 1968 that I have. More musical without the Chinese tubes, clean all the way up but a soft amp compared to a Blues Jr or Pro Jr.

    Recently power shuts-off by itself at times, no apparent reason - for about 1/2 second then comes back on. Happens maybe once or twice in a 2 hour session, sometimes goes a couple of days no problem. I just hate intermittent problems. Can't use it on a gig and hard to locate. Not a bad house circuit or breaker, not the power cord, not a loose fuse-holder. Inside of the amp is clean, nothing appears to be dis-colored.

    I notice the PT has a sticker that says "Thermal Fuse" - am I on the right track here ? Am pretty sure it's a transformer problem.
     
    Last edited: Aug 7, 2019
  2. uriah1

    uriah1 Telefied Gold Supporter

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    There are threads posted on gigging with a a TSA15. I had one
    for a bit too.
    You have to bump up 1 or 2 of the fuses. They will fail..and
    possibly intermittent before then. Not sure about your current issue.
    Wish you luck
    ps the internal one was hard to get to...lol
     
  3. Bartholomew3

    Bartholomew3 Friend of Leo's

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    Can a fuse be intermittent ? Opened it up and all 6 fuses are ok.

    Am pretty sure the PT thermal fuse is a problem - will probably trade it in for a Blues Jr IV.

    This thing is cheap Asian junk - 3rd repair with minimal use as I have other amps.
     
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