Connect with us

Color TV issue

Discussion in 'Electronic Repair' started by radiosrfun, Oct 9, 2007.

Scroll to continue with content
  1. radiosrfun

    radiosrfun Guest

    I have a 19" Admiral Colored TV which is probably 15 years old or so -
    played flawlessly until now.

    Just in the past couple days - the screen started jumping. The symptoms are:
    1. Non existent sometimes
    2. Intermittent at times
    3. Really nasty at others.

    I've not done "TV" repairs for many years - like very early 90s (regularly)
    then one here and there over the years - so I'm a bit out of the "TV" loop.
    I've devoted my bench time and equipment to other fields, I'm a bit out of
    the loop on TV issues. Personally, I'm thinking the faults are in the
    priority as shown.

    1. Cold solder joint
    2. A cap/resistor going bad
    3. Semiconductor going flakey

    I have to look and see if I have any spray to use to check for "heat"issues.
    Haven't had much call for it in recent years.

    The TV will play fine for a while - then jump like a bad antenna connection.
    OR it will display a solid while horizontal line with the picture "trying"
    to lock in - video flitters about above and below the white line. Turn the
    set off - then back on - it is fine for a second - then back to white line
    and flittering. "Sometimes" but not always - it "seems" to respond to
    pounding on the set - but that could be misleading.

    I fell asleep "listening" to it last night - woke up this AM - it was
    playing like nothing wrong. Has been all day - so far.

    I don't have the model number available at this second, but can get it -
    hopefully someone has a schematic.

    I'm going to be taking it apart in the next day or two - to take a look at
    it. Have a couple more important issues pending right now.

    Any opinions?

    Yeah, I know all about the HDTV issues, I just want to keep this one alive a
    while longer. Besides, I've seen some TVs bought new (recently) - not
    lasting a year. I'll use this until it dies. Maybe if this would be kind
    enough to continue a while longer, get a converter box "supposedly" coming
    out for the HDTV to Analog - sets There's not a thing wrong with this set
    when it is displaying the picture normally. FWIW - this set "is" used -
    heavily. Best sleeping pill I ever had. Aside from watching it through the
    day - or "listening" to it as doing other work - games and so on, there is
    the falling asleep to it. So, it gets lots of use.

    Thanks in advance for your opinions.

    Lou
     
  2. Meat Plow

    Meat Plow Guest

    I wouldn't rule out any of these as a possibility.
     
  3. b

    b Guest

    how many times did you use the word 'issues' in that post ?! ;-) in
    cases like that we'd say 'problems' in England!

    start by resoldering: the vertical /frame chip, line out transformer
    area, the tuner pins, large resistors etc . your problem is quite
    common with a set that age and hours' use. should be fixable (assuming
    you can solder and are aware of the dangers of this work) so don't
    give up! good luck.

    -B
     
  4. radiosrfun

    radiosrfun Guest

    Issues - problems = same thing.

    Solder? If you had read my post - you would have seen I said I "used" to do
    TV repairs - but do other fields of Electronics work - now. Yeah, I think I
    can solder! :) At least I don't use "plumbers" solder like I've seen come
    across my bench in some sets I service!

    Thanks for the assist.
     
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

-