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This topic comprises 3 pages: 1 2 3
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Topic: You can tell when you have been had when your technician tells you:
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Martin Dean
Film Handler

Posts: 11
From: Duluth, MN, USA
Registered: Aug 2002
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posted 08-19-2002 09:59 AM
When a venue with no experienced staff, are told that in order to run a 1600W lamp at a decent current they will have to upgrade to three phase in the booth in order to run the replacement rectifier as only three phase rectifiers can handle this load. As the booth had no three phase within 100' it would have been a costly excercise. Luckerly the venue checked other companies and saved a small fortune.Another venue, when questioning the reliability of their CP-500, were told by somebody from Dolby that 1 in 10 CP-500's were like that and it wasn't their problem. The CP-500 was duly removed and replaced with a second hand CP-200. ------------------ Martin Dean martinidean@charter.net
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Mike Blakesley
Film God

Posts: 12767
From: Forsyth, Montana
Registered: Jun 99
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posted 08-19-2002 09:32 PM
quote: How about when your tech cuts the wire to the exhaust fan in your rectifier because it was making noise?
This basically happened to me too. Just after I became an "owner," in 1980, we put new equipment in the booth. The theatre had (and still has) an exhaust fan for the booth mounted on the roof. The technician (same guy from my post above who told me we had to buy the new projector head) did not hook up the roof fan, but instead stuffed the wires up into a vent hole in the booth ceiling. The new lamphouse had a sensor which would not allow the lamp to light if there was insufficient ventilation. This guy DISABLED THAT SENSOR because he thought the small squirrel-cage fan in the lamphouse was providing enough cooling for the bulb. Of course me being brand new to Xenon, I had no idea he was fulla shit, so we ran that way for about 17 years. We did not go thru an inordinate number of bulbs, so nothing appeared to be wrong and I never thought about it again. Cut to around 1997 when future Film-Techer John Eickhof visited my booth for the first time. He noticed the lamp was running hot, and then found the disabled sensor. He asked about the roof exhaust, whereupon I said we had one, but it was not hooked up, and he about had a cow. We investigated, found the wires still stuffed into the booth vent, rigged a makeshift power hookup for the fan (which still worked fine after sitting idle for 15 years) and now the lamp is running great, and a lot cooler. For anyone who missed my other post above, I will repeat here: The bonehead techician who disabled my lamphouse sensor is now dead, and the company he worked for is now out of business. Good riddance to both.
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