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Topic: Xenon Lamp Problem
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Paul G. Thompson
The Weenie Man
![](http://www.film-tech.com/cgi-bin/paulpics.cgi)
Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000
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posted 04-23-2003 02:09 PM
The popping sound was probably due to the positive lead from the igniter was too close to the mirror and it arc'ed off. There is a good possibility the igniter has also been blown, but I doubt that. Check the open-circuit voltage of the power supply, but make sure the igniter is disabled before you do that. Otherwise, you will probably toast the meter if, for some reason, the igniter fired.
The open circuit voltage will vary from power supply to power supply. But if you get 100 volts or so, that should be high enough.
If your current fell off that bad, I would have checked a few other things. There could be a power supply malfunction.
In order for us to determine what actually went wrong, please tell us what model power supply you have. I would guess since you have a 2500 lamp, the power supply would be an RPS-2500. Just a guess....Those power supplies can do some nasty things to you that will make your day miserable.
There is a temperature limit switch inside that power supply. Those have been a troublesome device. Also, there are (if I recall correctly) three fuses on that power supply. One main fuse, and two little ones. I'll bet the arc-off of the lead to the mirror took out one of those fuses. Check them with an ohmmeter. It should be noted that the 2500 power supply has the ignition control relays inside the power supply instead of on the igniter. That power supply can be a real bear to troubleshoot without a schematic. ORC did some off-the-wall electrical/electronic designing of that thing.
If you have a schematic of the power supply, scan it in and send it to me, and I will be more than happy to step you through on how it works and what to look for.
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