Fluorescent lights dim and flashing
I have a fluorescent light fixture that uses two 40-watt 4' long tubes. It has recently started acting strange. When first turned on, it works fine for a minute or two, then one of the tubes becomes dim and the other becomes dim and flashing. It's not the tubes, as I've replaced those and nothing changed. Someone suggested it might be the ballast. I'm not exactly sure exactly how old the fixture is, but I'd guess it's at least 10 years old and has been used daily for that entire time. Is the problem caused by the ballast, and if so is that something that can be changed, or should I just buy a new fixture?
Ist dies eine gute Frage?
An update: I was able to get a replacement ballast at Home Depot. The bad news is the ballast was $18.49, only $1.50 less that a whole new fixture. It took about half an hour to install the replacement ballast. The replacement was successful and the lights are working great now. In my fixture there were eight 18 gauge wires that you have to cut and then attach to the new ballast. I used wire nuts to connect the wires, so it'll be a little easier to replace the ballast again in the future.
von Luke Soules
That is the normal end-of-life behavior of a fluorescent tube.
You probably ruined the ballast by letting it continue to run while it was flashing.
If the ballast came with the lamp clips on the end of the wires, it is easier to just change out the clips too.
von midimagic
We've had problems for years we are fluorescent lights dimming or not coming on at times of high humidity. Sometimes I can get them on by flipping the light switch off and on several times and out of the three maybe one will only come on. This is been going on for several years and just recently the lights are getting harder and harder to turn on.
von Tim Houser
The good news is LED lighting is getting cheap fast. You may want to look here. https://www.instructables.com/howto/LED+...
von Ricardo Furioso