Here's your PSA to check the basics when troubleshooting this stuff.
I have this 2x 20w fluorescent adapter in my kitchen. A month or so ago the bulbs were burning out, kept cycling on the starter. No big deal, they were used bulbs when I put it up 6 years ago. Put two new bulbs in and it worked fine... For about a week. Then it randomly would not start. Sometimes it would flicker for a second and then go out.
I pulled it down and looked everything over. Checked the ceiling fixture by screwing in a regular bulb which worked fine. The plug was the type that just presses together. The wire fit very loose so I replaced that. Still had problems. The screw in adapter didn't fit the plug very tight so I got a new one. Thought finally it was fixed... About 4 days later it won't start.
I was thinking it over figuring this is what I get for wanting to use 70-year-old junk.
I finally got my meter out and tested the voltage at the sockets. And..... 95 volts. I checked an outlet that I thought was on the same circuit, yep, 95 volts. Went down to my breaker panel which naturally, since it's what I do for a living, is mostly unmarked. Check the wire coming out of each breaker one by one until I found one with, you guessed it, 95 volts. The screw had 120v but the wire read 95. Wiggled the wire around and tightened the screw.
So there were no problems with my 75 year old fluorescent light. It was that "modern" breaker from about 1980
For those that don't know this is called an adapter. They were meant to attach to an existing light fixture in place of the incandescent bulb and glass globe. This one runs about 6 hours a day this time of year, sometimes more.


