JP Li-Pro quad charger problem

[Ashlandchris]

Hi folks,
I recently bought one of these beasts as my kids are now wanting to race with me so I need to be able to charge lots of batteries at the same time. All has been fine with it, until today when I came to charge my lipos for racing tomorrow.
I used mains power and it was working fine. Only 2 lipos connected and charging merrily in garage, but when I went out later to check on progress the whole thing was "dead" - no signs of life. I unplugged everything and then tried to reconnect power, and the displays briefly flickered blue light (as normal) but then nothing.
I switched power to my 12v supply and that works fine, so I tried changing the fuse on the plug. Same as before, brief flicker, but won't switch on
Any suggestions?

http://www.modelsport.co.uk/jp-lipro...roducts/370458