My project was working just fine, but then my Omega2+ suddenly halted. When I checked the device, it was pretty hot, so I assume the poweoff was some kind of automatic safety measure.
So I switched it off (the expansion dock switch), waited for the device to cool off, switched on again, the amber LED went on, then blinking while booting, then stopped blinking, just like normal boot sequence. But the device nevertheless started to heat up again, and after short time the power LED went off.
So I plugged in my multimeter to measure the current draw, and it shows 0.4A at this emergency-poweroff state, 0A when the expansion dock switch is off, and 1A when I switch it back on. Now the onboard power LED does not go on anymore.
The power source is 5V switched-mode power supply, there's no reason to think that it's not stable.
I my Omega2+ dead? Is there any way to find out for sure? A very disappointing and bitter end to a project that was supposed to go live for Christmas.