At work I have a large sign at the front of the building which contains a large ballast and 6, 6' fluorescent bulbs. Everything was working fine last week, but this week only two of the 6 bulbs light up, even after replacing every bulb. Does anyone have any clue what could be happening?

Hello, I've recently run into several cases where a fixture was burning out its bulbs in a matter of weeks, or even days. In one case, I was told that swapping the 60 watt bulb for a 15 watt bulb made it last significantly longer. I'm at a loss as to how to troubleshoot these cases. Where do...

Hi: Having an odd problem w/ light bulbs blowing across 3 circuits with no dimming or brightening. When switch is flipped on, bulbs immediately fail, one actually made a small "pop" sound--6 in all in one week. Also had reverb on computer speakers. Basic Info: 80 year old house; all new...

Not sure if this is a fixture problem, or some other. It seems that I go through lightbulbs rather quickly in two different fixtures in my house. I've even tried those long life, power-saver bulbs, to no avail. Both fixtures are cheap. One is a basic lightbulb fixture that you plug into a...