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is the screen dark?, if is it, see if the TRC filament is light, if is it afirmative, turn a little clockwise the fly back knob that say SCREEN and watch if there is a horizontal line at midle of the tv screen. if is it, your problem is in the vertical stage.
It sounds like your graphics card is shot. If your graphics card is a dedicated graphics card, you might be able to get it fixed/replaced; if it is embedded, then you are probably going to have to buy a whole new display screen.
It's sort of a solution, but I work in a computer shop and got this screen in yesterday. I looked at it closely and it's actually the backlight that died. I pulled it apart and found that three of the 820uF/20V capacitors had swollen up. If you replace them then you should be fine, but I went for a different approach and took the inverter board from a laptop and put the in the screen and used an external power supply. It's a bit dark but it works fine now.
Hi i have this tv and last night the screen went black i can hear sound ok but no picture just a black screen, Also i can see dark
outlines /shadows of whats on the tv, can you tell me please what has caused this
If you are using Direct TV or Dish Network call their tech support.
If you are on cable TV, call for a service man.
I would say that your TV has lost its sync separater chip and it shouldn't cost more than $60 dollars to fix, if the repair guy is honest. It's a 30 minute job.
This message is from an electronics engineer, retired.