Question about Mitsubishi SD105U DLP Projector
SOURCE: Lamp turns off
The solution is a weird one. I had the same problem with my Sony Cienza VPL-HS1. Run for about 5 minutes and then the lamp would go out. The warning would show that Lamp/Cover was an issue. I assumed the lamp had reached its lifespan.
All it was, was the filter sitting in the filter box has a small trigger switch that turns off the lamp as a safety when someone inadvertently opens the cover for the filter.
Well, strangely enough, the box and the cover are sized in a way to expand when they heat up. (which they do aggressively) When they heat up they expand, and ever so slightly move the filter away from the switch far enough to trigger it to the off position (only about 1/64th of an inch).
Thats why when some of you tip your projector on its side it runs ok (gravity pushing the filter back in place).
The solution is to put a tiny strip of duct tape along the far edge (the edge opposite of the switch) of the filter on its plastic surround. This will snug-up the filter harder against the switch. Even when it tries to shift under expansion and contraction, it will not allow the switch to poke out far enough to turn off.
So, a penny of tape does the job!
JC Dallas Texas
Posted on Dec 22, 2007
Check to be sure the safety switch at the filter is not being tripped when the case and or the filter surround gets hot and expands. Thats what mine did.
Posted on Dec 22, 2007
Both power light and status light a solid red with no response to any buttons indicates the bulb timer has expired. You need to reset the timer by pressing and holding the left arrow key, the right arrow key and the power button all at the same time for a few seconds.
If there are no problems, the projector will fire up, but you must replace the bulb as it will fail soon and perhaps explode when it does.
Posted on Mar 23, 2009
The clicking sound is the high voltage power supply trying to
ignite the gas in the lamp. The lamp is not firing and coming on.
Check the bulb/ lamp life. Possible the lamp has exceeded its
useful life and may need to be replaced.
Posted on Jul 21, 2010
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