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Need help repairing TV

Discussion in 'Electronic Repair' started by [email protected], May 20, 2006.

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  1. Guest

    I want to try to repair my old TV myself, there is just a few blown
    parts in the SMPS section. It's a Zenith that doesn't want to turn on;
    there is no voltage on the primary or secondary side on the xformer at
    all. I know very little about electronics, so i'm reading up about TV
    repair on the internet the best I can. The TV repair guy in my town was
    going to charge me $270 for a complete repair plus wait a month or two
    for it; NO WAY. If I can't then the TV is heading for the dumpster. The
    CRT should is fine.

    I found this main board:

    Could I take parts from the power supply section and transfer them over
    to my board? From the looks of the pic and the corresponding part list
    on the left of the pic; it seems like the same SMPS build. I'm guessing
    it is the STR-53041 or the driver transistor (QX4301) is fried, if it
    is more than that, at least I have more parts to take from this cheap
    board. I can't find anything about this board I want to buy
    (9-01616-01) would anyone here know where I can find more info about it
    or a schematic? It's worth a shot. Thanks in advance
  2. Papa_J

    Papa_J Guest

    The replacement board may be NLA, check at L/ for availabilities. L/G
    own Zenith and their parts related facilities. Best bet is for you to find a
    service manual, from L/G or SAMS Photofact. May be able to find one at the
    local library or online. The service manual and schematics will indicate
    part references and voltage measurements. Post the complete model number
    back on this N/G. Also any other diagnostics that you have done. A great
    group of informed personnel will assist you as much as possible via this
    Also check out for additional assistance. This is a site ran by
    service technicians and is extremely informative.
  3. Prophelactic

    Prophelactic Guest

    If this guy knows **** ALL about electronics, then how the **** is he going
    to safely diagnose and repair a fault on a SMPS.

    **** HIM OFF!
  4. kip

    kip Guest

    No need to throw out your Teddy ...Yikes
  5. Guest

    Was it something I said????
  6. I think some of the rudest people on the internet are from the UK.

    Joe Leikhim K4SAT
    "The RFI-EMI-GUY"©

    "Treason doth never prosper: what's the reason?
    For if it prosper, none dare call it treason."

    "Follow The Money" ;-P
  7. Art

    Art Guest

    Sorry to say, they're are also on this bloody side of the pond, deal with a
    lot of them on a daily basis. Again, post any other diagnostics you have
    been able to do and we shall attemp assisting.
  8. ian field

    ian field Guest

    Two of them come from Australia - and one of those top posts all the

  9. there is no voltage on the primary or secondary side on the xforme
    Erm...if you mean the transformer connected to the mains (wal
    plug).....did you try checking the fuse or the cord? Seems to me th
    only reason it doesn't work is that it is simply not getting power

    For the rest of you, there are rude people everywhere, not just in an
    particular country. Nationalism never got anyone anywhere..

    Besides, someone who cannot spell "prophylactic" shouldn'
    be taken too seriously anyway
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