16 hours testing with no failure. I'm declaring it repaired until further
notice. Many thanks for the tips john and sofie........excellent group.

DV


"DV" wrote in message
nk.net...
Thanks Daniel,
There was one area in the deflection circuitry where the board was
discolored due to heat. I made sure to hit all of those points. Appreciate
the tip about the B+. Unit currently OK after 6+ hours....we'll see.

Best regards, DV


"Sofie" wrote in message
...
DV:
If no defective parts are involved this straight-forward repair at many
service shops could be about $50 or even less...... and it is probably
unlikely that any of the caps are bad because the picture would not
"usually" be instantly good, then bad, then good again.... as all of
the
replies have indicated, it is probably defective solder connections near
and
around the vertical deflection circuitry and/or the flyback derived B+
supply to the vertical deflection... faulty solder joints are usually
near
and around the high heat producing parts.... chips, transistors, diodes,
power resistors, etc.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
---------------------


"DV" wrote in message
news
Thanks for the response. I appreciate what you are saying about the
repairs.
While I don't a lot of experience in consumer electronic repairs, TV's
or
otherwise, I do have expertise in electronics repair in general
because
of
the work I've been doing for the past 20+ years. Having said that, I
must
say that I have a lot of respect for the persons in your profession
who
could quickly look at this set and diagnose it. I don't know what you
consider a "cheap" repair, but I do know that I don't want to put $100
into.
This particular repair shouldn't be that complex based on the symptoms
and
the responses I've received so far. Also, I'm interested in at least
trying
to repair it myself because I am in the field. That's why I'm on
usenet
looking for clues.

Best regards,
DV

P.S. I don't have any schematics actually ordered yet and probably
won't.


"Sofie" wrote in message
...
DV:
Don't keep "nursing" this along. If you wait to have it fixed and
continue
operating the unit, the repair shop price will be much higher
because
of
additional failed components. Right now, the problem (as john's /
kip's)
reply post suggested, is most likely caused by dry, cracked or
otherwise
faulty solder joints in the vertical deflection circuitry..... and
if
you
take it to a repair shop right away it can probably be repaired
fairly
cheaply.
Don't waste your money and time purchasing schematics, they will not
include
a step by step troubleshooting and repair procedure for this type of
problem...... and if you feel you need a schematic to locate the
faulty
area
of the circuitry then you probably should just take it to a repair
shop
for
a proper and safe repair.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
-------------------

"DV" wrote in message
ink.net...
RCA 27" Model T25001GY, chassis B4UY91RVT

Intermittent vertical collapse to about 4". On/Off reset causes
symptom
to
go away, not always. Anyone seen this problem with this set
before?
Have
schematics on the way but would appreciate any info.

Thanks, DV