metal halide lamp flickering / pulsing??

[sneeyatch]

One of my 3 lamps will pulse or flicker really fast for a short period of time then it's fine. Is there an issue with the bulb or the ballast? Maybe it's a variation in the voltage?

The lamp is a 175 watt 10K XM and the ballast is a standard magnetic M57 ballast that comes with the Coralife unit.

Thanks for any suggestions!

[sneeyatch]

Anything?

[matt880305]

well you could try switching the bulb around and see if the flickering follows the bulb if not then it is the ballast

[sneeyatch]

I'll do that - thanks.

[kc350twin]

I had a icecap bulb do that to me a while back. It took me q while to figure it out because I only had one light. Check the contacts for arc marks due to poor connections.


Kc3