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old Ampeg------fix it or part it out

Discussion in 'Amps and Cabs [BG]' started by sedan_dad, Mar 16, 2008.


  1. sedan_dad

    sedan_dad Supporting Member

    Feb 5, 2006
    Columbus,Ohio
    I have a 1967 Ampeg BT15 solid state head.
    100 watts @4 ohms
    Well it huffed on me.
    Blew the fuse.
    I replaced the fuse with the proper one and now everytime I turn it on , it blows the fuse immediately.
    I'm not real sure but I'm thinking a shorted transformer.
    Anyways, it's in great cosmetic shape other wise.

    On one hand ;

    It has the original Ampeg 2 prong power cord that I've seen sell on the bay.
    It has 6 early SVT knobs.
    1 of the metal power switches
    1 of the short black plastic polarity switches.
    The input and out put jacks .
    Good pots. It has value in it's parts.

    On the other hand;
    It's very complete and it has the cool "electroluminesence" control panel that lights up.
    What could a transformer cost, $100 maybe?
    View attachment 85490

    View attachment 85491
     
  2. Dont know what to say other than that looks cool!
     
  3. Cool little amp! I'd see about fixing it before parting it out. I say wait on parting it out until you feel it's not worth fixing.
     
  4. Rob Mancini

    Rob Mancini Guest

    Feb 26, 2008
    That thing is so clean otherwise, it would be a shame to part it out. I couldn't find the exact transformer on Fliptops.net, but I'm guessing it'd go for around $130-150.
     
  5. Kennethfaria

    Kennethfaria Banned

    Mar 12, 2008
    that glow in the dark think sure is cool. Who needs LED when you got glow in the dark.
     
  6. BassmanDk

    BassmanDk

    Nov 23, 2005
    Odense, Denmark
    Employee - 4Sound, Odense
    Don't mess with a vintage thing!
    Have it fixed or sell it as a need-repair item; you might not get as high a price as if you sell it in parts but think about the benefits of good karma!
     
  7. scottbass

    scottbass Bass lines like a big, funky giant

    Jul 13, 2004
    Southern MN
    Don't jump to the conclusion it's transformer - it could just be a loose/broken connection that is shorting power to ground (well, actually neutral). Based on an extremely scientific sampling of 3 1960's era amps I have seen that started blowing fuses, two them had loose/dangling/broken & shorted connections, one of them cost real $ to fix.

    Usual disclaimers: IMHO, IME, YMMV, IIRC, etc.
     
  8. IMO your problem is probably blown output transistors. You should not part it out - that would be a crime. I have see so much vintage gear destroyed by people doing what you are suggesting. +1 on the bad Karma thing.

    Paul
     
  9. sedan_dad

    sedan_dad Supporting Member

    Feb 5, 2006
    Columbus,Ohio
    I have to agree.
    Providing it doesn't get stupid expensive to fix,I'll do it.
    I'll drop it off at Able's in the morning.
    Able's is THE place to fix amps.
    They've done great work for me in the past.
    Maybe pair it up with a 210 standing on end and I'll have my own "Mini SVT".
     
  10. Rob Mancini

    Rob Mancini Guest

    Feb 26, 2008
    Good luck with it. I understand your wanting to part it out somewhat. It's not the most collectable Ampeg out there, but it is one they didn't make a whole lot of and they won't be making anymore.
     
  11. sedan_dad

    sedan_dad Supporting Member

    Feb 5, 2006
    Columbus,Ohio
    Well it's in the shop.
    Let's hope it's not too expensive to fix.
    Thanks for the input.
    I see now the error of my thinking.
    You guys were right.
     
  12. sedan_dad

    sedan_dad Supporting Member

    Feb 5, 2006
    Columbus,Ohio
    It lives!
    $100 later she's as good as new.
    I had them put a grounded plug on it.
    Problem turned out to be fried rectifiers.
    I do have a 4 ohm 15" in a ported sub woofer bottom
    that might sound pretty good with it.
     
  13. I'm pleased that it lives and was so inexpensive to repair. NOW if you wish to sell it you'll get way more than 100 bucks and a few dollars worth of parts. Enjoy!!

    Paul
     
  14. JimmyM

    JimmyM Supporting Member

    Apr 11, 2005
    Apopka, FL
    Endorsing: Ampeg Amps, EMG Pickups
    Rock, SD!
     
  15. The early SVT heads also had the electroluminescence faceplates but were never powered. I had one. The faceplate was (I think) aluminum with the letters and numbers etc. stamped out like a thing you'd use to trace and had a blue plate underneath. The blue wasn't printed on on the early SVT heads. I'd fix it, someone could make a transformer for it if you really need one.
     
  16. sedan_dad

    sedan_dad Supporting Member

    Feb 5, 2006
    Columbus,Ohio
    No, the electroluminescence panel works just fine.
    The head has a clean bill of health at this point.
    No issues at all.
    Pots are clean,everything works great.
     
  17. Excellent :)

    Glad to see it didnt get scraped!
     
  18. No I meant on the early SVT's not your's. I guess they toyed with the idea and included the panels on them just in case on the early SVT heads. I just thought that was an interesting aside, congratulations BTW, another Ampeg lives.
    I have a 1959 Ampeg Bassamp 835, was made before the B-15's, I use it to play in my bedroom with the radio.
     
  19. sedan_dad

    sedan_dad Supporting Member

    Feb 5, 2006
    Columbus,Ohio
    Please, post a pic.
    Please?
     

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