They are pretty easy to check. Check the two poles on one end with a ohm meter for continuity and the two poles on the other end the same way. Open or infinite resistance means it is bad. Everything between the two ends is just gas. If the bulb has a gas leak (rare) it will also fail, but most times one end or the other is burnt through.Hi folks after 5 years running the ultraviolet bulb went dark . I replaced it with an exact same bulb it blew right away. At $30.00 a pop I'm a little gun shy to place the second one in. Can a bad ballast blow the bulb and how best to check it. Thanks Mike
Seems like you cured the symptom and not the root cause, which I'd guess is the ballast, but for the money and for the price of a starter I'd replace that also. I doubt it can be the wiring, but if some lights in your house are way brighter than normal you may have a bad neutral connection in your load center which is giving you overvoltage.bulb went dark
exact same bulb it blew right away.
You don't say where you live, but that can have an influence on your problem.Hi folks after 5 years running the ultraviolet bulb went dark . I replaced it with an exact same bulb it blew right away. At $30.00 a pop I'm a little gun shy to place the second one in. Can a bad ballast blow the bulb and how best to check it. Thanks Mike
I think something (power spike) has made the ballast unstable and that is what send the proper juice to the bulb. Regardless of which came first, the chicken or the egg, expecting 4 years out of a lamp is not realistic, but since there was a new bulb introduced, I would suspect the power supply (ballast)Could the old bulb have clobbered the ballast, which in turn clobbered the new lamp?
That's funny. Cause i sell a brand that comes with a three year warranty on the bulbs!If you had that UV light on 24/7 for 5 years.
Don't bother to change it now. They are usually only good for 9000 to 12,000 hours.
Considering a year has 8,760 hours in it. It stopped doing anything effective around 4 years ago.
The newer ones are coming with longer life spans then the older ones had.
5 years ago, they were just coming out with 2 year ones.