Re: Pot-Belly Bulbs

[P3D Dr. George A. Themelis <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

>I picked up a couple of "WIKO" bulbs from a distributor, thinking I would
>have a replacement and spare.  The replacement lasted three seconds, and
>the spare lasted for a couple of hours.  Each time the bulbs were blown
>when I powered up.  

>Is the projector circuitry faulty, or are the "south of the border" bulbs
>the problem?

In order to answer your question I need to know the type (rating) of
the bulbs you used.  The proper bulbs should be CZX 500 Watt.  They 
are rated 120 Volt, 25 hours.  Is it possible that you used the wrong
bulbs (lower voltage rating)?  I have used Wiko bulbs with no problem
and never had a problem with faulty projector circuit (it is difficult 
for me to think of a problem that will blow the bulbs.)

>Does anyone know of an inexpensive source for quality projector bulbs?
>Does anyone have experience retooling old units to bring the light source
>up to date?

Reel 3-D's price for $36 for a pair is among the best I have seen.
The other option is camera shows, etc. where you can sometimes find
these bulbs for $5-$10 each.

As discussed in earlier digests, there are halogen bulbs available as
the proper replacement for these bulbs, so you do not need to mess
up with the projector.

>Assuming the projector is working properly, how much is it worth?

$200 to $300 is a fair price range for a projector complete in case
and with 5" lenses (4" bring a bit more).

Regards -- George Themelis

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