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TV Repair or Replace

Discussion in 'Electronic Repair' started by Jack, Jan 29, 2006.

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  1. Jack

    Jack Guest

    I have a 35" Toshiba TV. It's about 10 years old. I just turned it on and
    all I see is a horizontal white line across the center of the tube.

    Question: Repair or replace it?

  2. Art

    Art Guest

    Get a bid on repairs to the vertical deflection circuit. May be just a few
    components, if the picture was on before the failure it may be cost
    effective to have it repaired.
  3. Guest

    REPAIR it.
    bad vert defl chip? bad flyback derived B+? faulty solder
    connections? High ESR caps? , etc, etc, etc.
    As long as the picture was good right before the failure it is
    definately worth repairing.
    It is probably not too expensive at most shops..... it would be best
    if you TOOK it to a service shop for, at the very least, a repair cost
    estimate so you can make an intelligent repair decision with facts
    instead of internet wild guesses. A real, in person tech will have to
    look at it and open'er up and do some testing to determine the exact
    failure and susequent estimated repair price.... can't be done with any
    certainty otherwise.
  4. PaPaPeng

    PaPaPeng Guest

    If you have some electronics skills and am handy with a solder try to
    locate if there is a cold solder problem. One of the dignostic
    indicators was that the problem could be temporaliy fixed by slapping
    the sides of the TV = loose connection somewhere.

    The gist of my fix was to open up the back cover. Switch on the TV.
    Use a long wood dowel to move around or tug on the wire harnesses.
    One of the tugs on the CRT PCB harness reproduced my TV's problem.
    This was horizontal white spaces and spread out scan lines on top of
    the screen. Traced that to a practically invisible crack on the
    solder pads for the pin connector on the PCB. Reflowed the solder.
    The image now is even sharper and better than before.
  5. James Sweet

    James Sweet Guest

    If it had a good picture before then get it repaired, that's a real
    simple fault to fix provided you haven't run it long enough to burn a
    line into the tube.
  6. Ken G.

    Ken G. Guest

    Yes simple repair for a shop . It should not cost more than 50 to 60$ if
    so then you are getting gouged .
  7. In one of my TVs that same problem was caused by a bad 180V
    electrolytic capacitor in series with the vertical yoke, but in another
    a transistor in the vertical output chip blew. The chip was $15, but
    some local places wanted $50. Fox International, MCM Electronics, and
    other sources listed in the are usually cheapest.

    Many libraries carry Sams Photofacts schematics, either on paper or
    online, but it shouldn't be that hard to find the vertical output
    section by tracing the wires from the yoke and looking up the part
    numbers of the transistor or chip to find out their functions. has information for a lot of those parts.

    Be careful about letting the TV fall forward and making the CRT shatter
    and explode.
  8. I charge $64 if it requires resoldering the vertical IC and $84 + parts if
    it reauires changing the output IC and/or any caps. I don't think I am
    gouging anyone.

    Those rates, of course, include routine adjustment of focus and white
    balance, resoldering other components that might need it, leakage test, and
    verifying the operation of the tuner, switching, and condition of the CRT
    before fixing the set. If I had to charge less it would not be worth my

  9. Guest

    Worth fixing for sure. If you take it in to the shop the labor should
    be between $75 and $90 depending on exaclty how many parts need
    replaced plus the parts, typically $25-40. Add the trip charge to this
    repair guess amount if you want to do come out and do this. Most shops
    will want to keep the total repair on a set this old even in this size
    under $120 maximum for a complete repair and check out with that type
    of problem if you take it in.

    Odds are very high on a 10 year old Toshiba that a quality repair will
    require checking the known electrolytic capacitors for potential future
    failure in addition to the few capacitors in the vertical that are bad
    that took out the vertical ic and fusible resistor.

    You do want to make sure you call a reputable shop that has the
    experience so they can actually fix the known potential failures that
    could happen soon after this repair so you won't have to pay again.
    Realize that even if you take the tv in, it is going to take two people
    to move the tv around and then a well experienced tech should have not
    more than about one hour in the set for the repair, then another couple
    of hours of bench repair test time.
  10. Guest

    Ditto, you cannot even afford to break even with a good tech on the
    payroll without recouping at least $85 for each hour they are working.
    Every job that requires replacing a part basically takes an hour labor
    from start to finish.
  11. sofie

    sofie Guest

    Ken G:
    What kind of business are you or have been involved in???
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