Need help diagnosing amp problem!!

Discussion in 'Amps and Cabs [BG]' started by barlowvw, Jul 16, 2013.

  1. barlowvw


    Dec 12, 2011
    London UK
    I'm having some technical troubles with my amplifier at the moment. It turns on, but is delivering no signal at all. All the LEDS are working and I checked the fuse In the back between the fan and the mains input and it's fine.

    Anyone have any suggestions of what the problem could be?

    Looking to sell it asap so help would be very much appreciated.

    Thanks in advance.

    Tom :smug:
  2. Taylor Livingston

    Taylor Livingston Supporting Member Commercial User

    Dec 25, 2002
    Oregon, US
    Owner, Iron Ether Electronics
    This subforum is about building basses, so you'll get better results in the amp forum. When you post there, you'll need to offer more information before anyone can help, for example which amp it is, how you have it connected, settings, and if there's anything else in the chain, whether you have a different cab to try the amp on, etc. Hope this helps. :)
  3. barlowvw


    Dec 12, 2011
    London UK
    Where about's do I find the 'Amp forum'?
  4. Amps forum has found you. Mod has moved your thread.

    Combo or amp?

    Sounds like a tech will be needed.
  5. Yeah, what amp?
  6. Bassdirty


    Jul 23, 2010

    I would check all cables involved (from head to cab, if not a combo).. also check instrument cable.

    And dont forget to check batteries if its an active bass.

    That's about all I can do with pretty much zero information. ;)
  7. Is there a device plugged into the effect's/in-out loop and not powered-up?
  8. barlowvw


    Dec 12, 2011
    London UK
    It's an ampeg svt-350h. Speaker cable, instrument cable and battery in the bass are all working because I use them all with a different head. There's nothing else involved, just the bass straight to the amp to the cab. Not sure what other info I could give?
  9. Does that amp have an effects loop or power amp in? Maybe try plugging your bass directly in to the return and see if you get any sound?
  10. RickenBoogie


    Jul 22, 2007
    Dallas, TX
    9 times out of 10, when all the obvious things have been looked into, an amp tech is the solution.
  11. barlowvw


    Dec 12, 2011
    London UK
    Thanks for the help guys, Im gonna try and source an amp tech I think!
  12. do this first
  13. arai

    arai Inactive

    Jul 16, 2007
    Yes do that.
    Also try a different speaker cable and try something else into the cab to make sure it is neither of those. Try a differnt bass and instrument cable too. It is a process of elimination