Starting problem Dead TV. RCA 32F530T, chassis ATC113CD4, year 2004. I
Replace flyback # 257807 along with the H-O/P XSTR (2SC5148 original
Toshiba).
Problem fix. Everything work fine, except i have hatching or tearing lines at one or two places on the screen depending on the white level (contrast), always moving in half screen area on the top. Same symptom with video and RF input. If i lower the vertical height, tearing lines disappear. No error code in service mode.
I replace the flyback 3 times with different part # and suppliers (not original RCA flyback, NLA) , 257807, 257805 and ACME-2632 (replacement for RCA #261163). Still have exactly the same problem with 2 tv set. I checked parts in the horizontal and vertical circuit, DC supply, everything looks good. Ear low noisy flyback.
See pictures
I do a lot of research on the web and nobody has experienced this
problem.
Any suggestion? Bulletin note? Jungle ic? Damper diode failure?
Flyback incompatible???
Someone saw that before?
Thanks
Pierre

Seems many of the after market LOPT being supplied for the RCA sets exhibit
all kinds of similar symptoms whne used. Have seen the same issues many
times when attempting repairs on these RCA sets. No support from Thomson
Corp at all!! Remember when RCA was a major developer in consumer
electronics, now that 3 letters stands for 'Real Crappy Appratus'. IMHO.
Seen way too many of their sets, only 2-4 years old, that specific parts are
not available.

"Cailloux" wrote in message
...
Starting problem Dead TV. RCA 32F530T, chassis ATC113CD4, year 2004. I
Replace flyback # 257807 along with the H-O/P XSTR (2SC5148 original
Toshiba).
Problem fix. Everything work fine, except i have hatching or tearing
lines at one or two places on the screen depending on the white level
(contrast), always moving in half screen area on the top. Same symptom
with video and RF input. If i lower the vertical height, tearing lines
disappear. No error code in service mode.
I replace the flyback 3 times with different part # and suppliers (not
original RCA flyback, NLA) , 257807, 257805 and ACME-2632 (replacement for
RCA #261163). Still have exactly the same problem with 2 tv set. I checked
parts in the horizontal and vertical circuit, DC supply, everything looks
good. Ear low noisy flyback.
See pictures
I do a lot of research on the web and nobody has experienced this
problem.
Any suggestion? Bulletin note? Jungle ic? Damper diode failure?
Flyback incompatible???
Someone saw that before?
Thanks
Pierre

Pictures RCA TV 32F530T pix tearing horizontal lines
Link:
http://picasaweb.google.com/alexleconquerant

On Sun, 16 Dec 2007 11:14:54 -0500, Meat Plow
wrote:

On Sun, 16 Dec 2007 07:23:53 -0800, Cailloux wrote:

Pictures RCA TV 32F530T pix tearing horizontal lines
Link:
http://picasaweb.google.com/alexleconquerant

That's a bad case of Moire. You might Google your model number
and add Moire and see what shows up.

It is bad,but I don't think the OP is asking about that, but instead
the jagged tear that most of the images show.

It looks like he has two problems, not one. Wonder what the horizontal
sweep and sync looks like on the scope?

On Dec 16, 11:14 am, Meat Plow wrote:
On Sun, 16 Dec 2007 07:23:53 -0800, Cailloux wrote:
Pictures RCA TV 32F530T pix tearing horizontal lines
Link:
http://picasaweb.google.com/alexleconquerant

That's a bad case of Moire. You might Google your model number
and add Moire and see what shows up.

The picture is clear, the moire effect is due to the camera. The
tearing lines seems to be a sync or timing problem.

On Dec 16, 1:14 pm, PeterD wrote:
On Sun, 16 Dec 2007 11:14:54 -0500, Meat Plow
wrote:

On Sun, 16 Dec 2007 07:23:53 -0800, Cailloux wrote:

Pictures RCA TV 32F530T pix tearing horizontal lines
Link:
http://picasaweb.google.com/alexleconquerant

That's a bad case of Moire. You might Google your model number
and add Moire and see what shows up.

It is bad,but I don't think the OP is asking about that, but instead
the jagged tear that most of the images show.

It looks like he has two problems, not one. Wonder what the horizontal
sweep and sync looks like on the scope?

Some people have reported problems with strange behaviour when
replacing flyback. The horizontal circuit its a feedback loop, it is
not easy to synchronise on the specific tearing lines. Service data
and data sheet are not in details. I replaced some discret parts, and
change some value (resistors, caps) just to see the behaviour. May be
its the jungle chip, gemstar module, software correction...
I already spend 90$ on that %|#&=....