dj_barber Posted December 9, 2009 Share Posted December 9, 2009 This mac was stripped from an installation during a refurb. Since then has been robbed for parts to fix other Macs, but I have recently sat down to try to get it working again. Everything was goosed in some way - snapped wiring, broken belts etc - but managed to repair cheaply and easily...however, fell at the final hurdle...the lamp! Upon power up, it will go through its reset routine then (with autostrike on) attempt to strike the lamp once (click is audible) and the lamp does not light. This has been tried multiple times (by both resets, manual L ON, and DMX...during the same powerup, or after being unplugged and plugged back in). No error message is given, and mac will carry on doing whatever else it is instructed to do (DMX or manual), just without light output. Tests carried out:-Replaced lamp with known working, and brand new lamp-Checked all fuses-Continuity tested cabling involved with the lamp: (from source, through transformer, to ballast, to starter, through thermal switch, to lamp).-Continuity tested thermal switch One final note: the internal wiring of this fixture has not been touched by anyone other than both myself and another competent technician working for a company with years of experience, so the chances of it being an original wiring problem (transformer terminals, ballast setup) is unlikely. Has anyone had similar problems, or could reccomend a possible problem and/or solution. If you wish, I can give you a telephone number to contact me on, just PM me. ...and I did say unlikely up there ^^ but if anyone thinks there is anything I should check....please do shout up!! Many thanksthe very confused Dan Barber Link to comment Share on other sites More sharing options...
johnhuson Posted December 9, 2009 Share Posted December 9, 2009 Meter to see if you have mains voltage on the low voltage side of your ignitor (make sure you get the right connections else you'll meter won't be happy!), if you do then it's likely your ignitor is screwed. If you don't then it's either a problem with the lamp relay (unlikely as you say you can hear a click) or the ballast. Link to comment Share on other sites More sharing options...
Tin Posted December 9, 2009 Share Posted December 9, 2009 It does sound like the ignitor is faulty, however, double check that the lamp holder is in good condition, you can get an O/C at the base of the holder. Link to comment Share on other sites More sharing options...
Richard CSL Posted December 10, 2009 Share Posted December 10, 2009 swop the ignitor for a known working one. very common cause of non striking lamps. Link to comment Share on other sites More sharing options...
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