On Tue, 01 Jun 2021 16:39:45 +0100, "Dave Plowman (News)"
wrote:


In article ,
Jack Harry Teesdale wrote:

I have a series of 8 mains voltage outside bulkhead type lights. (fixed
under the soffits).



One stopped working so i duly had the cover off and replaced the
lamp. The light did not come on. Tested the lamp in another source and
it works OK, so not that.



I changed the lamp holder and tried again, still not working.



I have tested with my multimeter and get approx 240v at the lampholder,
so not a broken neutral.



All the other 7 lights are working OK.



Any suggestions/solutions to try?


Isolate the circuit, then check for continuity between the broken one and
a good one, on both L&N individually. Are they looped in and out? A
multimeter might still show 240v with a slightly iffy connection.


I've found that modern bulbs sometimes have contacts that are not as
tall, so when inserted they don't reach the ones in the socket.
--
Dave W