Tg6 shuts off automatically

Brand new tg6 worked once. No water. Charged up the battery for a new day and when I turn it on it makes a little noise like a small gear/shutter opening, it pauses and then shuts off. Same behavior with a second fully charged battery. If I plug it in to the wall it’s now switched to a Japanese menu (was English). I notice a very brief red icon flashing on and then off in the top left of the display - so fast it’s hard to tell what it is. No idea what’s going on - only used once!