The only way that the tech is going to know what the brightness fault
is, he is going to have to check the G2 bias, and the biases to the CRT.
It is possible to have a bias fault to the CRT, a supply fault from the
G2 supply, general power supply faults, or a bad CRT to cause brightness
variations.

--

Jerry G.
======

"davexnet02" wrote in message
...
Hello,
Before I get the Tech in, was wondering if anybody
has any insight as to what this problem may be..

My 1992 Sony kv27xbr35 has developed an unusual
picture problem. It's intermittent, sometimes
it's not there at all, the rest of the time it varies
in intensity, seems worse on a bright dynamic picture
where the contrast is higher.

It's basically alternating light and dark horizontal
lines, about 1/2 wide (approx) which seem to shimmer.

Here's a sample:
http://home.comcast.net/~davetest/capture.mpg (370kb)

Please note: the rainbow/diagonal effect is not a part
of the problem, but an artifact produced during the HI8 capture.

This fault appears regardless of the source,
just as likely to be dvd player, vcr or DBS.
Does it through the RF and video/s-video inputs.

Appreciate any feedback.
Dave