"Meat Plow" wrote in message ...
On Tue, 06 Nov 2007 09:52:42 -0500, D-unit wrote:
"Meat Plow" wrote in message ...
On Tue, 06 Nov 2007 09:01:31 -0500, D-unit wrote:
This rear proj. TV has no vertical hold until
about 5 minutes of warm up. Leave it off for
30 minutes and you have to wait 5 minutes again.
Any ideas?
High ESR caps in the vert section. Got a schematic?
No.
db
These guys do for a $20 download
http://www.servicemanuals.net/
If you're lucky maybe someone will chime in and tell you where exactly to
look, I can't.
However what I would do would be to figure out where the circuitry is,
wait until the vertical syncs up and dribble some cooler a drop at a time
on some of the caps while monitoring the screen. If you hit the right one
the vert will fall out of sync immediately. It's a hit or miss proposition
without a schematic and not something a tech doing this for a living would
consider except for a last ditch effort.
This is how I've always found intermittent parts..
What would be a better (more pro) solution to tracking down the problem?
I would like to learn.
Thanks,
Don