Question about Toshiba 44NHM84 44" TV
This happened to my 44nhm84. The problem turned out to be the light tunnel, which is an arrangement of four little mirrors mounted between the lamp and the color wheel inside the light engine. One of the mirrors had come loose and was blocking the light transmission pathway. I used a little dab of glue to hold the mirror in position, and the problem was fixed.
I've read about other reports of problems with the light tunnel, but usually they say that only one side of the picture is dim. I think it depends on which end of the light tunnel gets blocked. If the end towards the condenser lens is blocked, then the blockage will be imaged on the screen. If the end towards the lamp bulb is blocked, the problem is well out of the focal plane of the lens, so a general dimming is the result.
Posted on Jul 03, 2008
Hello.. Has anybody found a fix for the dim picture?
Posted on Jun 17, 2008
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Posted on Jan 02, 2017
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