If you are using the box for signal to the set unplug it for a while and then plug back in to let it reboot--may or may not solve the problem but easy and worth trying. Do the same with the TV if you want.
SOURCE: Change in color, computer problem inside TV
For "thechances", The LVDS cable has gone bad. This cable connect between the mainboard and the panel. The replace the cable will fix the problem.
SOURCE: vizo GV42L HDTV Only a blue screen when I turn
look for "blue filter" in your setup and turn it off
SOURCE: dvd's not playing in correct color
How old is the TV? It may need a firmware upgrade to support new HDMI/DVI formats
SOURCE: HDTV LCD 32 inch is all green. Good definition but
THe most likely cause for this problem is bad connection of the cable connecting the main TV board with the LCD controller. It's called LVDS cable and is hard to miss, usually fat round and black, connecting a board from the chasis with a little board in the top center of the LCD assembly.
I'd open the TV and gently try and reattach the cable to see if that yields any results. You can try it a few times, in fact I'd do it while the TV is open and working so I can better see if adjusting it makes a difference.
There's also a chance that the LCD logic itself got burned and misses on one of the colors. But I don't remember ever seeing that.
plz my computer system the screem is not showing verywell
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