"JimK" wrote in message
...
At a pals tother day and having replaced his gu10 halogens with less was
miffed to find they flashed when turning on the separate kitchen light...

Is this a job for one of them resistor /capacitor combos across switch
live & neutral at the switch?

Eg
https://www.tlc-direct.co.uk/Products/SMFLA01.html


I assume they only started to flash when in the switched off state!

If so this is a classic example of inductance from the other lighting cable
causing the flashing. Putting one of the halogen GU10s back in to see if
that stops the flashing is the simple test before fitting the suggested
item.

Cheers

--
Adam