Saturday, October 01, 2011

repaired BenQ

Took lamp out. Checked continuity of lead wires: OK. Checked continuity of bulb: open. But then I wasn't surprised by that. I assumed it was an arc style bulb.

Tried to remove the lamp itself from the subassembly but couldn't budge it. Reaffixed the clamp and screw.

Reinserted the bulb assembled. Not a real positive fit. Fired up the projector. A few moments later Steve said, "It's up!" And there it was, on the living room wall, the splash screen. Weird. Why did it work now and it didn't before? I didn't really do anything.

The only thing I can think of is that the lamp assembly is poorly designed and doesn't fit well. The screw that holds the assembly is tiny and opposite where the power connectors mate. Perhaps the lamp, when the projector is inverted, looses connection with the base.

Maybe I should hack it. Figure out a way to apply pressure to the power conductor side of the assembly...

We checked the lamp life: 67 hours. It should go for 2000 or 3000!

We all breathed a huge sigh of relief. I was particularly pleased that the bulb had not been damaged. I didn't know (at the time) how much a replacement would be; but I recall (in the old days) it was cheaper to buy a new projector...

I personally installed the projector downstairs, gently, and tested it. We were back in business.

Waste of everyone's time...

Stress we didn't need...

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