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Author Topic: Xenon lamp not striking Jonathan Wood Expert Film Handler Posts: 206 From: Oxfordshire, United kingdom Registered: Jan 2008 posted 05-28-2015 03:40 PM                     Hi I'm using a CX20 lamphouse with an Irem ex85 console rectifier. All wired correctly I think but problem is the lamp (which I believe to be good) won't strike . The ignitior is getting it's power from the 230vac aux out on the rectifier. The ignitior is making all the right noises but there's no sign of an arc . I'm not using any automation so want it to strike manually . Is there anything in the lamphouse that might be looking for a contact from non existent automation ? Any advice gratefully received . Thanks Jon  |  IP: Logged Stephan Shelley Jedi Master Film Handler Posts: 854 From: castro valley, CA, usa Registered: Nov 2014 posted 05-28-2015 03:48 PM                     Other than a bad bulb, make sure nothing is touching ground on the cable between the bulb and HV/RF output of the ignitior. If there are any bare connectors make sure they are not close to ground and have an arc at that point to ground. The other possibility is the ignitior is bad.  |  IP: Logged Jonathan Wood Expert Film Handler Posts: 206 From: Oxfordshire, United kingdom Registered: Jan 2008 posted 05-28-2015 05:09 PM                     Thanks Stephan, I was wondering about that. I've linked the lamphouse ground to the rectifier ground , which seems to be how the machine was originally set up. Should it have it's own direct ground ?  |  IP: Logged Stephan Shelley Jedi Master Film Handler Posts: 854 From: castro valley, CA, usa Registered: Nov 2014 posted 05-28-2015 06:13 PM                     That should be fine as long as it gets to a real ground at some point.  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 05-28-2015 07:43 PM                     The CX-20 Console used a IGA10M igniter. On this igniter, is place an "heater tube" (Christie calls this a delay/relay circuit) that contains a filament winding and a relay sensitive to the heat from the winding. There is also a wire wound resistor that is in circuit to all of this. How this works like like a points system in a distributor. You hit the start button and the filament in the tube heats up. Low voltage is going across the closed relay and going through the primary winding of the coil creating a magnetic field. Relay opens up due to the heat from the filament, collapsing the current to the primary winding causing the secondary winding to build up great amount of current to ignite the bulb. Check this tube and check the wire wound resistor. Good luck - Monte  |  IP: Logged Jonathan Wood Expert Film Handler Posts: 206 From: Oxfordshire, United kingdom Registered: Jan 2008 posted 05-29-2015 02:15 AM                     Thanks Monte , much appreciated. Jon  |  IP: Logged

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