Hi just after a little feedback.ive got a fault on my d20 n have just emailed them regarding this.so I was just wondering whether anyone had any positive dealings with them
I have the smaller brother the d10. A couple of times I have had issues with it not ramping or not turning on. My first port of call tends to be the brass contact ring in the head. Make sure it is clean, and it is almost like a spring split ring. Go around the circumference and lightly make sure it is springy all the way round. Not saying this will sort yours but it works for me.
Glad you got it working.
Next step to stop it ever happening again. I would guess you are suing std alkaline batteries as you have written about white crud and leaking cell?
NEVER use alkaline batteries in torches that you want to keep, they will leak and destroy your torch! Invest in some good quality rechargeable AAs and a charger. I would strongly suggest using Sanyo Eneloops.