Weird light issue

Lee Nowell snipped-for-privacy@yahoo.co.uk> wrote in news: snipped-for-privacy@googlegroups.com:

So - you imply a dimmer switch is in the circuit? /Is it a touch or remote type?

Sorry didn't mean to imply dimmer. Was trying to say that the on state when flashing seems to imply mains live and not some sort of residual current from somewhere (where I would have assumed the bulb would be dim).

Is it a filament bulb, fluorescent, halogen, LED or what. The explanation might be dependent on the bulb type.

Has one of the incandescent or CFLs have been replaced with an LED? if the cables to the light run parallel to other cables they could have enough capacitance that lets the PSU inside the LED slowly "suck up" enough power to give a brief flash, then rinse and repeat.

Another possibility, is if the lamps turn out to be 12V halogens with a transformer, rather than 240V, a transformer might have gone faulty.

Will check re: the LED.... I too was originally thinking dud transformer but then was thinking that might be the case if the light flashed on a few times due to the capacitance on the transformer but given it apparently goes on "for ever" I ruled that out. Have got her to send me some photos too which may unpick things

I can think of dozens

Not if its an LED.

Or a fluorecscent

If it has, take it out and patent it.

A transformer that produces voltage on the incendiary with the primary underpowered would be worth billions and a Nobel prize.

^^^^^^^^^^

^^^ <chuckle>

Possibles:

1. Leakage R in bulb has gone o/c, now it's powering from capacitive cable coupling
2. dodgy switch or wiring

NT

Well first swap the lamp between sockets. If it moves then its the lamp. I'm assuming these are LEDs? Brian

Dodgy spell check, must be related to mine. Yes I agree something like that has to be rather more than a faulty transformer.

Swapping bulbs will prove the point and reveal the culprit as I said. Brian

I can recall many years ago when Leds were in their infancy the almost on problem afflicted on, and the fix, in the end was a 1 megohm resistor across the socket. Weird things LEDs. Brian