robgraham wrote:
On 24 Oct, 19:41, EricP wrote:
On Fri, 24 Oct 2008 17:29:19 GMT, "The Medway Handyman"

wrote:
Try switching it to AC... :-)

Doh!

What a pillock I am. Automatically assumed 12v would be DC.

You aren't alone! (

I read an re-read your post wondering what could be wrong. Gave up in
the end.

(Anybody want to buy a well used DMM?)
(With AC scale)

You've also got to bear in mind that some electronic transformers are
of a design that requires there to be a reasonable load before any
output occurs. This is just a characteristic of switch mode power
supplies, not a design aim.

Ah. So they need a 'known to be working' bulb (sorry lamp) to be there?

I'm just looking for a simple & reliable way of knowing if I need to change
the SMPS.


--
Dave - The Medway Handyman
www.medwayhandyman.co.uk