Connect with us

RCA 46" rear projection tv colour problems.

Discussion in 'Electronic Repair' started by Karen Ray-Stewart, Aug 10, 2005.

Scroll to continue with content
  1. I have a CTC169PK 46" Tv. The screen has primary retrace lines and
    oscillates like a heart beat? The picture is there, kind of camoflaged
    behind the retrace. The audio is good. The colour,tint,sharp,brightness,
    does not function, they appear on the screen but does nothing to adjust the
    picture. Does this leed me to replacing the U3101 system control IC.Does
    this IC fully destroy itself or does it just break down section by section,
    I might even try a new EEPROM? Any suggetions?

  2. kip

    kip Guest

    ESR the filter caps.....
    Whats the voltage on CR4118 whilst plugged in but not turned on.
    measure the voltage from the diode to tuner case.

  3. ESR? I will do this but the Tv unfortunatly is at a customers place of
    residence. filter caps? HMMM? that would cause a lot of problems. what
    should this voltage read? I just don't want to order parts I don't need and
    cost the costomer more than it is worth.

    Thanx James
  4. Guest

    Do a google groups search here for ctc169 and ptk169 and make note of
    all suggestions.
    Power supply capacitors and diodes are a common issue, get the
    locations c4104,c4102,c4108,cr4118, etc and make not of all of them.

    There is also a link to download the general ctc169 schematic posted a
    short while back.

    Then look for the luma buffer transistor and plan on replacing it, I
    think Q2906.
    Good possibility it failed due to a picture tube arc back, in which
    case it may fail again.

    Very important that the standby B+ voltages, 145V and 15V, are exact or
    several future failures will be expected soon.
  5. kip

    kip Guest

    I do those sets in home every week...
    If you cannot do the basics then chuck it.

  6. kip

    kip Guest

    Come to think of it a bit more James why don't you
    call in a TV shop and get an estimate of costs.
    Because it sounds like you don't have a clue.

  7. Asimov

    Asimov Guest

    "kip" bravely wrote to "All" (12 Aug 05 08:59:19)
    --- on the heady topic of "Re: RCA 46" rear projection tv colour problems."

    ki> Reply-To: "kip" <>
    ki> Xref: core-easynews

    ki> Come to think of it a bit more James why don't you
    ki> call in a TV shop and get an estimate of costs.
    ki> Because it sounds like you don't have a clue.

    Don't make fun of the newbies! It only tires us and annoys them.
    Teach them something good instead. If you fill their brains with good
    stuff there won't be any room left for the bad...


    .... Bad Beer Rots Our Young Guts But Vodka Goes Well.
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day