Regarding the past problem, the display was a blank green screen (fairly bright I might add). From my online searches, I can say that with other TV's its usually a blue screen. When I had the green screen problem, it was only with watching cable TV. Computer worked fine. Unplugging caused the computer in the TV to reboot, and the TV worked fine after that. I don't think this is related to the current problem, which is a very very dark screen (at times totally black, but it seems to warm to something that is a bit better than totally black).
The current problem--the dark screen problem exists regarding of input source (cable, computer, etc).
This problem appears to coincide with the TV turning itself off from time to time. However, the very dark screen problem happened at least a week from the self-turning off materialized.
What I want to know is whether fixing the TV is economical (in light of expense for buying a comparable TV) and what the issue is (could I fix it if I got the right parts?).
Besides what I have mentioned, no previous problems/repairs.
Any ideas on what the problem is? May burned out tubes? Given my usage of the TV for background listening, I wouldn't be surprised if the TV aged more than its years.
It did seem like the shut-offs happen primarily when the TV has not been on long. I wouldn't say that it was during the turn on process (give the lack of a visible screen I never thought of it in that way).
I can't speak for every shut down, but I would say most happened in the first five minutes of operation.
What does the 1-2 mean?
Take all the time you want---do I eventually run out of time?
Thanks for your help. I don't think there is a software update for my model. The link you sent shows an update for a 3-D TV. I am however going to replace the lamp and see what kind of TV I have at that point.
Thanks again for your help. If this all works, I will definitely come back and provide a bonus.