Technics SU VX800 Amp Problem

Discussion in 'General Electronics Chat' started by bmumph, Jan 4, 2012.

  1. bmumph

    Thread Starter New Member

    Jan 4, 2012
    2
    0
    Hello. I've downloaded the service manual but was hoping to get some tips from experienced folks before starting testing. The amp has one problem: one of the channels only comes on once the volume is turned up to 30-50%. It can then be turned down and will stay on almost all the time. It's as if that channel has needs to be jump-started!

    Does anyone have an idea what specifically to look for? Thanks much.
     
  2. KJ6EAD

    Senior Member

    Apr 30, 2011
    1,425
    363
    Loose or defective load (speaker) relay.
     
    Last edited: Jan 4, 2012
  3. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,754
    760
    The guy to fix Technics is here. :D

    Above post is the first problem you should look into.
    Another problem could be defective volume control.
     
  4. bmumph

    Thread Starter New Member

    Jan 4, 2012
    2
    0
    Many thanks, will post up progress at a later date. Cheers.
     
  5. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
    6,357
    718
    Contact cleaner?

    Which channel?

    Have you opened it up for visual inspection?

    Is there a mechanical click inside when the channel turns on?
     
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