Jungle IC301 CXA1477 is your line pairing culprit.

Best place to buy these are from B & D http://www.bdent.com/

Original Sony IC's in Original Sony packaging. Around $50.00

Yeah...you can scrounge them up for $20 or so here and there.....but once ya
ya bit by a bad one or one that lasts a couple days....OEM is the only way
to go on these.


--
==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)

========================

"Bruce H" wrote in message
...
Correction to post:

"Bruce H" wrote in message news:...
Based on his description (problem shows for a while then screen
disappears) the protection circuitry is kicking in to blank the picture.
A loose connection (or bad solder joint) can definitely cause this. If
not a solder joint problem, it is doubtful that a component failure
problem would allow him to get a normal picture to submit.

I have a Sony KP-41T15 that has a similar "line paring" problem but in my
case there are faulty components in the vertical circuit as the problem
condition is continuous from when the set is turned on. The vertical
voltage feed to the jungle IC is below what it should be (approx 3V
versus 3.6V). I am suspecting the jungle IC as well but first I have to
find the problem components(s).

Bruce


"Shoreline Electronics" wrote in message
...
Resolder your vertical output IC561.

This will solve your problem.

Resolder the Horizontal Driver Transformer while your in there for good
preventive maintenance


--
==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)

========================

"John F Miller" johnATenosoft.net wrote in message
...
Hello,

I have a Sony Trinitron KV27S22 (December 1997). A couple of days ago,
it developed a picture problem. Rather than try to describe it, I have
placed the following photos on the web:

Image of color bars: Behaving OK -
http://www.enosoft.net/kv27s22/Bars%20-%20OK.JPG
Image of color bars: Exhibiting problem -
http://www.enosoft.net/kv27s22/Bars%20-%20Problem.JPG

The problem will set in anything from a few seconds to a few minutes
after cold-starting the set. The problem will persist for a few
seconds before the display completely disappears. Only a cold reset
will restore the image. Audio is fine.

I have done some troubleshooting and have narrowed the problem to what
I think is a capacitance issue. Using a painter's stick (wooden!), I
tapped the various components on the main board and found that the
tapping could induce the problem. However, if I hold the ground of the
audio connectors, the tapping does not create the problem. When the
problem is present, grabbing the ground of the audio connector clears
the problem.

The most sensitive part of the board is shown at:

http://www.enosoft.net/kv27s22/Main%20Board%20(Part).JPG

I have a copy of the Sony service manual for this set but, before I
merrily begin replacing all the capacitors, I would like to know if
anyone knows a specific cause and/or that I am barking up the right
tree.

Many thanks in advance,

John Miller.