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its sounds like the convergence on your TV needs to be adjusted. (this adjusts all of the color guns in the back of the tv to line them up again, when they get off, you start to get yellow blue or red halos around objects in the picture. In the setup menu on your TV under picture or Display there will be an item that says "convergence" follow the instructions in there so all the crosses on the screen no longer have colored halos anymore.
This is a high voltage problem, but first try turning up the screen voltage located on the focus block. This requires opening the back of the TV, be careful of dangerous high voltage. See if there's a picture after turning up the red, green, blue, voltage adjustments, if not then vertical sweep, Flyback, or convergence need servicing. This repair shouldn't cost more than $300.00 dollars, maybe less. Contact me at my link below so I can help you further. If this helps please rate :-)
You might have a bad regulator on the signal board or a bad button on the front of the tv. The AV RESET button will make the screen go black and if it is malfunctioning can cause this symptom. Bad solder (cracks) can also cause this. Lastly I have changed a few regulator for different problems. Near the back left side (while behind tv) on a small heatsink. Goodluck.
have you tried to access the self diagnosis feature by holding the menu and device/input buttons on the set both in together for five seconds to see if the led will blink a two digit code such as two blinks pause two blinks for a 22 error? Try that and let me know the blink code and i can assist you.
Good Day, John;
It sounds like the Convergence IC's have poor solder connections, by re-soldering the convergence output IC's should solve your problem. The IC's are large and mounted to large silver "heat sink" with STK 392 # on them. Good Luck, big IRISH.
The convergence ICs have failed and thats what is shutting the set down. You will need to replace both convergence ICs they are STK394-250 you can get replacement ICs at the following link with free shipping and free instalation instructions with pictures s you can do the repair yourself. Here is the link. http://servicemanuals.vstore.ca/
Take out the batteries or simply reprogram the remote by using the manual search function on the remote. There is probably a couple of different settings in the remote for this type of TV set, Good Luck