UPDATE!
Oh Happy Joy! 😀
Thanks to here and Google, I figured it might be a dodgy capacitor, so I got hold of some from RS Electronics down the road from me, and swapped the bad one for a new un.
And my monitor now works again! It’s a little brighter than before, but not brilliant, so the lamp is probbly nearing the end of it’s life, but it’ll do for a while longer yet hopefully. It is noticeably better than it was though.
A Samsung service centre quoted me £56 to look at it, with a possible £20-30 for a new board (they wouldn’t just replace a dodgy capacitor). So, the cost of a new monitor, basically.
The capacitors cost me £3 for 5, so just 60p for the one.
The monitor would only have been around £120 new, bin it, buy a new one and spend the time you would have wasted messing around with the old one drinking beer
[smug gloaty mode] I now have £117 to spend on beer. And it took me about 10 minutes or so to change the component. The RS place was on the way to me mums so very convenient. [/smug gloaty mode]
for the half hour or so of time, how chuffed will you be if it works?
Very chuffed indeed. I’m well pleased with myself, considering I know nowt about electronics really.
So thanks to those that offered help, very grateful.
Oh, and Cougar; if you read my OP propply, you’d see it’s nothing to do with my Mac at all. That’s working perfectly. 😉