Automatic shutdown of the camera (both Sony and Panasonic) means most likely a problem with a faulty power switch.
This problem is most likely to occur in the PMW-EX1, PMW-EX3, AG-AC130, AG-AC160, AG-AC90, AG-AC90A, AG-HPX250, DCR-VX2100, DCR-VX2100, DSR-PD170 and others, and automatically turns off or reset the camera.
Such malfunctions are usually fixed within 1-3 hours (depending on the availability of parts in our office or Sony/Panasonic warehouse).
Sony PMW-EX1 repair cost: £98,00
Sony: PMW-EX3 repair cost: £127,00
Panasonic AG-AC130/AC160 repair cost: £95,00
Panasonic AG-AC90/AC90A repair cost: £90,00