cambournepete":3c7shfso said:
The screw method worked, but the inside of the torch is basically wrecked so I've chucked it - and now need an LED replacement.
If you've still got it, I sorted one belonging to a daughter (they've all had them, and they've all let batteries go flat and leak in them):
Wash out with copious amounts of soapy water. Dry thoroughly in a warm place (on top of the boiler). Stick some coarse-ish wet & dry to a dowel (80 grit I think) with DS tape and spin it in a drill chuck. You can make it pass the thread (so it doesn't grind it away), and clean up the inside of the tube reasonably well.
The switch/bulbholder will pop out with care, so you can do the contacts. I can't remember how, but I did successfully get it apart and reassembled.
If the thread is manky, a bit of grinding paste on the end cap thread worked to and fro frees it off (don't go crazy). Wash out again, dry and Vaseline on the inside and the threads stops further corrosion.
And I think you can now get substitute LED bulbs for them, that are bi-pin and push straight in. LEDs are not as bright, and don't focus as well (because they're pre-focused usually with a cast lens on the front), but they will fit and the switch function will still work.
Worth salvaging, IMHO. I love the fact they're properly waterproof - I take them caving as spare lights.