"Chuck Chandler" wrote in message
...
Powering up w/out bulb:
Yes. Look for the circuit board that has two heavily insulated wires (has
25KV on them) going to bulb. There is proabably 2-3 signal wires nearby.
Something can usually be done to provide a signal, the signal basically is
on/off low voltage, and the signal just tells the rest of the projector
that
the bulb powered up ok.
I've used an alternate projector bulb on my TV for the last 100 hours or
so,
works fine. Original cost about $300, I got the cheapest UHP off of eBay
for
$23 delivered and adapted it. Original was 100 watts, 3" diameter,
replacement was 120/132 watts, 1.5" diameter. CPU fan provides additional
cooling.
The light from both bulbs gets focused very effeciently down to 1/8"
diameter spot from the reflector shape. Your replacement bulb will have to
do likewise.
There is a really good chance of electrocuting yourself or blowing up your
circuitry trying to do the same thing I did. The halide bulbs can explode
quite well; safety glasses/shield and high collar jacket are minimal
safety
standards. I alpha tested mine on New Year's eve on my front porch.


What are you using to ballast the new bulb? I'd be very hesitant to go up in
wattage, in that unlikely scenario that it catches fire, you're pretty well
screwed.