I bought 2 Ikea lights which clamp onto a shelf, and both ceased to work shortly after purchase.
They work at 12 volts, with a transformer in the wall plug. I guess there is a fuse at the transformer which has gone. Unfortunately I cannot open the plug to look inside - the screw/bolt is too deep for any screwdriver I have seen with the appropriate end (a bit like an Allen key).
Has anyone else had a similar experience?