You like in a humid climate. In HI, I spent a lot of time polishing the contacts on fluorescent fixtures. Here, I have had to polish the contacts for the starters on the 15W tube lights. I suspect touching the bulb moves it enough to make contact at the ends. in daily use, the oxidation does not get as thick, s a small bump can do it.

archer75--- via Mercedes <mailto:mercedes@okiebenz.com>
September 19, 2016 at 9:42 AM
2 years ago I replaced he transformers in the four tube light assembly over the sink. The last few weeks sometimes one, sometimes two of the bulbs on the same shared transformer didn't come on until I twisted one of them in its sockets. Yesterday I found that just touching the glass in the middle of the tube was all that was needed to make it come on. I've done that repeatedly and every time the tube(s) light up as bright as usual. The only thing I can think of is some sort of capacitance effect that lets weak voltage/amperage from the dying transformer ionize enough of the gas to complete the circuit. The primary cause is probably the Chinese transformer from Home Depot since neither of the new bulbs is affected.
Gerry


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