On Jul 22, 11:15 pm,
(Improv1) wrote:
I recently came into posession of the above TV (our neighbor wanted to
upgrade). When you turn on the power, you can hear the TV starting
up, then all becomes quiet, except for three LEDs blinking on and
off. They are all on the centre pcb; two are green, one is red.
Anyone with any ideas on this issue, please give me some advice.
Barring that, if anyone knows of a downloadable tech service manual,
I would appreciate it. The nearest shop to me is an hour away, and
the TV is a monster to move.
Thanks!

Hello, it is a shame that people havt to be so to say, Jerks, to put
it mildly, from the replied postings I just read for your problem, I
have the same problem with a set I am working on for a customer, what
is happening is the shutdown circuit is detecting something wrong,
ether no vertical or horizontal deflection or convergence IC's could
be shorted (STK392-110) this is done to protect the phosphor on the
tubes from being damaged. The LED's on the power supply board are
there to indicate certain voltage presence on the secondary of the
switch mode supply. If you are missing any voltages or have lost
deflection, the set will come on with high voltage and immediately
shutdown. I do not have a solid answer for you cause it could be many
things, I would start with the convergence IC's. My set stays on long
enough to see an image in the tubes, so I have deflection. I have
replaced the convergence IC's and was not the problem. If any kind and
humble person has seen this problem and knows what is the problem, it
would be beneficial to myself and all that have posted here. I have
repaired a set with a similar problem by replacing the deflection
board, but that's a $300 fix just for parts. And I dont need
incantations, bat wings and eye of newt. Not in my tool box. An ESR
meter is handy though.

Thank you

Ken