edward read

Hey, so, do you here the ignition pulse when you hit the on button? Its the "shorted wire sound" right before the lamp goes on. If not then its either the lamp safety switch circuit or the ballast or the ignitor. Other things to check: re plug the ballast and head cable. With the lamp off, and with a pair of gloves check and make sure that the lamp is seated properly in its holder and that the connections are not carbonized (all black). DO NOT touch the glass of the lamp. If its a rental then bring the whole thing back and have it replaced. They will swap pieces until they can isolate the problem. My bet is its the ballast. HMI lamps in general, unless the glass envelope is broken or puntured, usually don't just die. They get really crappy in color as they age but they are usually good for 4 or 500 hours. Some can be rated for 750. Again, you said its a rental, just have it replaced. This is the safest thing to do.

Hi everyone, New/old member - been a while since I've posted. A business partner is at NAB and has a line on a couple of Sun Ray 6k Pars (Electronic Ballast) for a really great price. I'm not real familiar with the this par and was wondering if anyone had opinions on the units. Thanks