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Toshiba model CF35D50 TV has no sound

No its not the swith on back that says int or ext speakers?  I get no sound even when I hook speakers up to the ext speaker port, and no sound when I hook a stereo up to the RCA outputs.  I am looking for a solid tip to what I can look for inside TV, or a repair manual free. Toshiba model # CF35D50 
Chassis # 9411 built in sept 1994

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  • bjingles Jul 27, 2009

    It has one main board with a section outlined that says Audio.  But I dont know how to test it with out a service manual.  anytips


  • bjingles Jul 27, 2009

    I thought this site had service manuals? yes or no


  • bjingles Jul 27, 2009

    Ya I have an Tektronix O-Scope and Fluke meter but without a schmatic or service manual I am kinda going at it blind.  I did a real good visual check and found one looked like a mosfet that was cold soldier down. Fixed that and still same thing.  I was just hoping for a manual or a tip on what the pin out was on the main amp on the board so I could test in put and output signals.  I would really like to get this fixed and I am in no hurry.  DO you know of any good website that have what I am looking for?


  • bjingles Jul 27, 2009

    Thanks

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  • 3,037 Answers

The audio board is most likely bad if you have no audio out of any of the outputs. This board can be found by following the wiring from the speakers to it. Since this is an older tv, it in my opinion may not be worth fixing as other problems will probably arise and finding a new board will be hard, so hopefully you will find a bad capacitor (look for one with a swelling top), or another component that doesn't check out. I hope this helps. Let me know how this turns out.



Benjamin

Posted on Jul 27, 2009

  • 1 more comment 
  • Benjamin Patri
    Benjamin Patri Jul 27, 2009

    No this site doesn't have service manuals for all tvs, we may have manuals for some products, but most of them will not, it depends on what users upload onto the site. Service manuals are quite expensive usually too and rare to come by online.

  • Benjamin Patri
    Benjamin Patri Jul 27, 2009

    Sorry I missed your other comment. Any resistors will test infinite resistance if bad, but without an oscilloscope, it is hard to test most of the board, generally shops just replace boards since it is easier unless something stands out like a broken or burnt connection or component.

  • Benjamin Patri
    Benjamin Patri Jul 27, 2009

    As this is an older tv, I don't have a service manual and the sites I checked don't have it either, your best bet would be seeing if a shop would have one to sell or if Toshiba might have one still for this tv. Sorry I can't be more help on this

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