I've got a 50H82 50" Toshiba Projection that up until recently worked perfectly. This morning the TV worked great. This afternoon, we turned it on and found that nothing would display. No OSD or other sign of life. The audio works fine, however. The power light comes on, goes off for a second and comes back, followed shortly by the audio. Changing inputs provides similar results. Any idea what I'm looking at for troubleshooting or cost for repair? Thanks!
If the screen is lit, then there is high voltage. If there is no video, and the screen is lit, then there is a loss of video. The fault can be anywhere along the main video path before it gets decoded in to the red, blue, and green compositions.
If the screen is not lit, most likely there is a high voltage failure, or there is a failure in the bias supply for the tubes.
When there is a loss of high voltage, this can be from any of the components in the high voltage area. Some of the main things that go defective are the flyback, high voltage multiplier, and various other small components.
Have you considered to replace the set with a good Plama or LCD set? This repair may end up being on the expensive side.
Jerry G.
http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
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I ended up picking up a plasma, because I agree that even if I could fix it, I'd rather put that money toward a newer set, as opposed to spending that same money and still having an older one. Thanks for confirming my suspicions!
I have sound but no video, the only sign of life is red led ligt and sound to let me know its on. The screen menus wont even display. I'm thnking its a video processor. Its hooked up to HDTV and took a second or two to change channels before it went out.
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