after a power cut, my sp30 wont mine.

2 sp20s and 4 s2 ants are all ok, the sp30 powers up  but no yellow/green led

ive tried half a dozen sd recoveries with my 'old' recovery sd - that worked on sp30 & sp20 previously - no joy

half a dozen with a newly formatted/fresh sd card - no joy at all

the power supplies leds are lit green

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