Quote:
Originally Posted by pruettfan
I have never heard of a factory HID failing. I am sure they do but i suspect that it is very rare for all of the technical reasons listed above. Bulbs fail because the filament is fragile these have no fiament so it is very different.
I have heard of aftermarket HID systems having problems however.
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So long as the sealed glass tube is never broken, the gas inside should last indefinitely. The ballasts, however, may burn out or short out over time. They run at incredibly high voltages and have high frequency oscilators which can burn out over time. But in general, they do last longer than standard halogens with 1890's technology filaments
