One thing that wouldn't hurt to try is unplugging it and leaving it that way overnight, just in case something internally got into a wierd state. Probably won't help but you never know - it fixes my washing machine every time it gets into a snit smile

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8