Florescent lights require a Smack before they turn on...

Old 04-23-16, 10:24 AM
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Florescent lights require a Smack before they turn on...

So, I have some standard shop lights in my basement that are florescent tubes. On a couple of them, every so often when I turn on the lights, the light doesn't go on. I have to reach up and smack the end of the fixture and then the bulb will usually turn on.

I'm just wondering if this usually would signify a problem with the bulb or a problem with the fixture. I can go buy new fixtures but if it's just a sign the bulb might be going bad, that's cheaper to replace.

Old 04-23-16, 11:53 AM
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It may be a sign they are not properly grounded.
Old 04-23-16, 12:28 PM
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Could be a loose connection in the socket,swap the lamps out with one of the other fixtures and see if the problem follows,doubt it's the lamps though.
Old 05-01-16, 08:49 PM
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Things to check:

- If these are cord and plug connected, is the plug a 3-wire plug? Rapid-start lamps need that ground to start. You touching the fixture are providing a partial ground.

- If the reflector has been removed from the lamp, put it back. The grounded reflector aids the starting process (the reason for the ground above).

- If the lamps have preheat starters, replace the starters.

- Check for loose connections.

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