Hello Boba,
When I turn on the tv, I see colorful lines for a while and then the
screen goes black but the power light stays on.
Thanks.
First check for any dry solder joints on *all* boards, SONY
sets are especially prone to that.
Then check the voltages to the CRT neck (RGB+supply voltage),
which should read around 12V for most sets.
Also:
Do you still have a raster after the picture turns black ? If yes, then
there's a problem with the video-processing board.
I just had a similar problem with my AE1C/KV-X2531 SONY set,
where it turned out to be a bad jungle IC (TDA-4580). My
picture would stay black until I cooled the IC down with
freeze spray which immediately would bring the picture
back to normal.
Anyway, please give more details and try to measure
as many as possible. It's very good to have the
service manual for your set, SONY's documents are
quite useful here
.
Adrian
