Mine was dead before, suddenly no light at all when plug in. Was using it just 2 nights before that and doing fine.
Anyway went down to Leica, got a replacement one immediately. Think they happen to have stock at that time.
In case you don't know where to go. here's the address,
360 Orchard Road
International Building
#06-04
Singapore 238869
They operate office hours and close for few hours on lunch time, best to call before you go. Tel: 6511 9388