"Esmail Bonakdarian" wrote in message
news:KSWgg.4497$Id2.1713@trnddc03...


The problem you're showing wouldn't be that expensive to reapair by an
honest, qualified tech. If it ended up being what I think it is, I
wouldn't charge more than 40 bucks to take care of it. Call around.
Don't toss it just because you don't know what's wrong with it.

Hi,

tossing stuff is really something I'd rather not do. Can you give
me an idea of what you think is wrong with it? That way I can at
least mention this when I call around. I'd gladly pay that amount
to have it fixed.

The closest authorized place is about half an hour down the interstate
(I live in a tiny town w/ no local repair place), and said it might
take them 3 or 4 weeks to get to it. I only have one tv so that seems
long.

Should I take it to best buy?

Thanks,
Esmail

The fault is either convergence or colour purity, the CRT has a "shadow
mask" behind the phosphor coated glass face plate the R, G, & B electron
beams have to be accurately aimed at the tiny holes in the shadow mask so
they only strike the correct colour phosphor dot (or stripe).

There are two possibilities: the first is the degauss posistor in or near
the mains input circuitry, this demagnetises the shadowmask each time the
set is switched on, a faulty posistor can give weird colour distortions but
is usually more random in appearance than the division into R, G & B shown
in your photo.

More likely is the static convergence and purity rings on the CRT neck
between the scan coils and the CRT base board, these rings are usually
moulded plastic with a magnetic filler and are usually mounted on a
ring-lock assembly which can (in rare cases) work loose and allow the rings
to move. The back most spigots on the assembly are the ring-lock cam, if
this is not loose then either the rings have been previously tampered with
and re tightened or the assembly has been subjected to a strong external
magnetic field, if the rings are loose they may have moved so realignment
shouldn't be too difficult.

If you can get hold of a service manual and borrow a test pattern generator
the realignment procedure is really quite straightforward matter of
following the steps described in the manual..