What ho one and all,

I started the thread http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17517 because of what seems to be a dead under cupboard light and figure that LED replacement may be the way to go.

However, of the five lights, only one is dodgy and that does sometimes turn on, but after X minutes, starts to flicker and dies.

I figured it was the starter but as they are very small lights, there is not starter, just a bunch of electric bits and a ballast. Obviously, as it does come on (sometimes) the problem is either a poor connection (I did check them all and they seems fine) or something else, but I have no idea where to start to isolate the component and may be , find a replacement.

Any ideas gratefully taken on board.

Thanks and toodle pip

Didn't think of doing that. Will let you know in the fullness of time!

I have five under cupboard lights in the kitchen; four are daisy chained to each other, the one that is flickering / switching off, is wired directly into the mains.

Agreed is seems like the ballast; can these be replaced?

A 5W ballast should do the trick, many makes available online. Check its the right shape to fit in the case.

Posted by me: "You could check by swapping in one from another fitting" - sounds like you have four other lights that you can borrow a working ballast from?