okay, table lamp keeps turning into a flipping disco light. why does the bulb keep flashing on and off, then going off completely? it comes back on when I loosen and tighten it again.
Unplug it from the wall socket, unscrew the bulb and look for a small metal tag at the base of the fitting. Give it a gentle pull with your finger or a pen. The terminal may have been bent back over time and is just making connection and no more giving intermittent performance.
This happened with my bathroom light and I just changed the bulb and there were no more problems - it was as if the bulb wasn't connecting properly, it would go on if you fiddled with it but then it would flicker and eventually go out. I presumed there was a problem with the wee element bits. If Douglas's suggestion doesn't work, try another bulb.
well Mr Bags, surprisingly.. it stayed on last night after I posted! I'll update you later as to whether I'm wearing my spandex leggings and glittery boob tube.