topic Re: Canon 5D Mark 111 in EOS DSLR & Mirrorless Cameras

Canon 5D Mark 111

OOP — Sun, 17 Apr 2016 17:31:48 GMT

I have a Canon 5D Mark 111 all was working well until Friday. It just would not turn on. I used it one day and the next just would not power up. What can I do.

Re: Canon 5D Mark 111

kvbarkley — Sun, 17 Apr 2016 20:11:03 GMT

Take the battery out for a few days.

My 5D Mark 111

OOP — Mon, 18 Apr 2016 05:38:02 GMT

My 5D Mark 111 would not power up. Battries are fully charge

Re: Canon 5D Mark 111

OOP — Mon, 18 Apr 2016 10:20:09 GMT

Thanks I will try that

Re: Canon 5D Mark 111

ebiggs1 — Mon, 18 Apr 2016 12:37:37 GMT

You don't want to or need to take the battery out for a few days that won't help or do anything. But you may want to charge the battery. You may want to insure the battery and charger are working propery. This is of course, if you didn't drop you Mk III or take it for a swin in the meantime.

Re: Canon 5D Mark 111

RobertTheFat — Mon, 18 Apr 2016 12:58:35 GMT

@kvbarkley wrote:
Take the battery out for a few days.

It's hard to see what good that will do. That advice is usualy given as a way to run down the date/time battery, in the hope of preventing the latter from interfering with a full reset to factory settings. But the 5D3 has a removable date/time battery (p. 349 of user manual CIH-E002-003), so the effect, if any, of running it down over several days should be the same as that of simply removing it for a minute or two.

Well, now I see that that point was already made. I stopped at 8:30 to take my morning pills, and Ernie Biggs beat me to it. Great minds think alike, I guess.

Re: Canon 5D Mark 111

OOP — Tue, 19 Apr 2016 13:01:36 GMT

Thank Guys ,

I have change that battery but still nothing.

Looks like I have to put it in for repairs.

Thanks again

OOP

Re: Canon 5D Mark 111

Waddizzle — Tue, 19 Apr 2016 13:15:19 GMT

Try to power it up without any memory cards, too.

Re: Canon 5D Mark 111

OOP — Tue, 19 Apr 2016 13:48:29 GMT

I have done that too

Re: Canon 5D Mark 111

OOP — Tue, 26 Apr 2016 17:44:08 GMT

Thanks guys but none of the advice worked. I have now return the camera to canon.

i really do appreciate your assistance.

Re: Canon 5D Mark 111

OOP — Tue, 14 Jun 2016 08:17:53 GMT

Hi guys, thanks for your assistance re my 5D Mark iii. Unfortunately it was the PCB board the was not working. Sent it off for repairs. It's now back and like new.

@OOP wrote:
Thanks guys but none of the advice worked. I have now return the camera to canon.
i really do appreciate your assistance.

Re: Canon 5D Mark 111

houjioa — Mon, 01 May 2017 12:37:28 GMT

Once the batteries are out, toggle the power switch on & off about 10 times.Go ahead and replace the clock battery (and honestly, this is probably a good time to replace it if you haven't), and then insert a fully charged camera battery.
For some reason (I'm told) toggling the power switch on & off a bunch of times in a row helps clear capacitors in the camera and flushing on board memory. If this method won't works for you then the only thing that can work is hard reset. For hard reset details and other fixes you can use Canon 5d Manual for better results.