Rich:
I never worked on TVs, but numerous disimilar problems are usually
associated with the power supply which supplies all the different circuit
parts. I am surprised you cannot get a schematic from Howard Sams
publishing. Best of luck to you. I had several brand new TVs go
intermittent recently. We would probably be better off without them.
Gary
On Dec 1, 2014 11:56 PM, "mechanic_2@... [TekScopes]" <
TekScopes@...> wrote:
Hello all,
I am having a problem with my Zenith 36" CRT TV. It goes into shutdown
mode. When it is cold I have to start it up over and over before it will
stay on. Also as the brightness of the screen varies the size of the
horizontal axes varies. When the size becomes very small the tv goes into
shutdown. I believe that it is dropping into low voltage shutdown.
Also the top of the screen is rolling over and it started about 2 months
ago. At first it was just a variation in the size of the horizontal axes
but it has been getting progressively worst. Up to last week it would stay
on once it was warmed up but now it is shutting down when the screen has a
lot of white space on it.
I know that without a schematic and a list of the voltages that it will be
impossible to fix it but what I am asking for is any thoughts or ideas of
where to look first. This thing is a monster and I will have to have a
friend come over and stay here for a while to help me move it.
Any thoughts and/or ideas?
Thanks,
rich!
Gary Robert Bosworth