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Author Topic: XENON POWER SUPPLY Victor Garcia Film Handler Posts: 13 From: Mexico city, Mexico Registered: Aug 2012 posted 07-13-2013 04:41 PM                     Hi friends! I have a Christie P35GPS projector which was working very well. I've changed the diodes 3 times in 2 weeks to the rectifier. The rectifier operates at 4000 watts. What part of the rectifier is failing??  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 07-13-2013 05:34 PM                     Probably either they are overheating or a bypass capacitor is missing that shunts the hivoltage of the ignigter protecting the diode junctions Or it is possible that the diodes are underated  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 07-13-2013 08:47 PM                        The p.i.v. should be 1000 volts or more. Commonly Christie used 600v diodes until quite late in the run. The failure mode is that the diodes fail at time of shut down when hot. Capacitors (as mentioned above) are important. A small fan will help also. Small breeze on diodes that runs whenever power breaker is on.  |  IP: Logged

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