I have lost the color on my flat sceen tv, A sylvania.

Average life on most sets now is 3 to 5 years--if cannot be bothered to look or do not know the model number etc not much real help can be provided, kind of like saying I won't tell you but you tell me what is wrong and how to fix it...........

Tv have a colors wheel design into it.Tv make alots of noises like grinding,humming,buzzing or pictures freezes or lost colors or flashes black&white flashes within the pictures.The tv colors wheel it is dying and the colors disc is it warping and not spinning correctly inside it motor walls axis anymore.The tv colors wheel must be replaced.The tv colors wheel sit way back of the tv and have to take out alot mechanical parts out before even can come to it and change it.If u have no mechanical skills.Don't attemp change the tv colors wheel by ur self.Hire a tv tech.person to change it.

Reboot ur HDTV box buy unplug and replug is an hour later,see if get the color back.If not,than ur Sharp tv Main Tuner signal board is dead that the problems,must replaced the Tuner signal board to solved this problems.

Unplug,replug the tv an hour later.See what happen.U do this to reset all setting back to factory setting.

In the steup menu there should be a setting called "HUE" try adjusting that. If that does not work, you may have lost "green drive" circuits in your TV.
If the menu windows have the right colors, try playing a DVD or a video on it. If they look good you may have a problem with channel tuner or antenna.

Reset the colors setting back to factory original setting.Should have all colors back to original.Not than ur main tuner signal board is dead,must replaced.

Try unplugging it if color regains its the box and not the TV!! if it dont regain then the flyback needs to be looked at. I am sure its the box and not the TV and yes had problems with zenth boxes Thank you

Ur high voltage is dead,FBT,flyback transformer is dead,the big black block of plastice with a red wire with a cap hook to a CRT(tv tube).Resoder for lost green color,by the crt yoke RED GREEN YELLOW connection to the main PCB board.Might also have to resolder crt board connection pins socket.

Good Day, Props123;
It sounds like you may have locked-up the micro, try unplugging TV from wall for 3-4 minutes, then replug. If the TV was magnetized (crt) the osd would also display no color.
Good Luck, Big Irish.

yes! the problem is in the CRT board the RGB colors! you have lost of blue and red! thats why your unit is green! and only green is worked the blue and red is not work! maybe you have lost contact of them! resolder all CRT board to comeback the normal picture!