7D not responding

[crockny]

I have a 7D - I shot for hours and changed my card in a hurry without turning off the camera.  Now it doesn't turn on at all and there is no error message.  I charged two batteries and neither one worked.  These batteries appeared to be fully charged yesterday - today I put them back in the charger and the red light is blinking a long time - this doesn't seem right -- I'm wondering if it could be a charger problem - do they go bad???

[diverhank]

Try resetting the camera by removing the regular battery AND the date battery. Even with half dead battery, a functioning camera will at least tell you that before shutting down. Besides the chance of both batteries are completely drained overnight is possible but unlikely.

[cicopo]

I think they areasking if the charger could be at fault & YES it could. I shot a 7D for 3 years & never turned it nor any of my other bodies off to swap memory cards or lenses without ever running into a problem. A bad charger could actually drain a battery rather than charge it. You may need to test the output voltages on both the charger & the batteries.

[crockny]

I think I might take both batteries and the charger to Adorama or B&H tomorrow and see if they can test them ... good idea.  In the meantime I was told on another forum to take everything off, lenses, card, battery and date/time battery and let it sit overnight - apparently it needs that long to be completely off ... so if neither of those things work I will have to send it in ... again ...

[Peter]

Check the memory card slot. If the "door" (contact) is not closed, the camera will not turn on.

[cicopo]

Good point about the door.

[crockny]

Well I've opened and closed the card door and pressed on it in all directions - doesn't seem to make a difference ... I'll give it a closer inspection though ...

[Peter]

Take a good look at the sensor at the card door. Use a needle or something to press it.