topic EOS 6D Mark II Doesn't Want to Turn On in EOS DSLR & Mirrorless Cameras

EOS 6D Mark II Doesn't Want to Turn On

shasta — Wed, 12 Oct 2022 12:48:38 GMT

My 6D has not been wanting to turn on. I replace the battery and card several times and it will finally turn on after a few times. Has anyone else had this issue?

Re: EOS 6D Mark ii

Tronhard — Tue, 11 Oct 2022 21:22:43 GMT

Hi Shasta and welcome to the forum:

A few questions to clarify the possibilities for us to ponder...

Has the camera been left unused for some time?

How old is the battery and is it a genuine Canon one?

Has anything changed since the last time you used the camera? For example, a different card, different battery, and knocks, bumps etc?

Re: EOS 6D Mark ii

shasta — Tue, 11 Oct 2022 21:38:47 GMT

I use the camera at least 2-3 times a week. I have 3 Canon batteries that I switch out. The last one I bought was about a year ago. The only new thing I have done is I bought new cards recently.

Re: EOS 6D Mark ii

deebatman316 — Tue, 11 Oct 2022 21:39:07 GMT

Hi OP, have you tried removing all accessories from the camera body ie battery grip or speedlite. If not I would start by removing the lens, SD card and any other accessories to see if the body will power up normally. Also use the first party Canon battery which is an LP-E6 series battery ex. LP-E6N or LP-E6NH.

-Demetrius

40D, 5D IV, EF 16-35mm F/2.8L III, EF 24-70mm F/2.8L II, EF 28-135mm F/3.5-5.6 IS USM, EF 50 F/1.8 STM

430EX III-RT & 600EX II-RT

Re: EOS 6D Mark ii

deebatman316 — Tue, 11 Oct 2022 21:42:55 GMT

Hi Shasta, will the camera power up normally with the SD card removed.

-Demetrius

40D, 5D IV, EF 16-35mm F/2.8L III, EF 24-70mm F/2.8L II, EF 28-135mm F/3.5-5.6 IS USM, EF 50 F/1.8 STM

430EX III-RT & 600EX II-RT

Re: EOS 6D Mark ii

Tronhard — Tue, 11 Oct 2022 21:49:57 GMT

Re: The only new thing I have done is I bought new cards recently.

That would be my first starting point for trouble shooting the issue. If you have the old card(s) you were using, try one of those and see if it works.

A couple of points of note regarding cards:

1. Use only full-size SD cards, don't use the micro-SD cards with an adapter - they often cause trouble.

2. Stay away from cheap cards, or branded cards that seem to be a bargain. There are a lot of counterfeit cards out there. I recommend getting cards from a trusted source and not on-line unless it is an OEM site.

Re: EOS 6D Mark ii

shasta — Tue, 11 Oct 2022 21:54:25 GMT

Not always. I removed the lens and SD card to see if the camera would turn on and it did the first time but when I tried it again it wouldn't turn on.

Re: EOS 6D Mark ii

shasta — Tue, 11 Oct 2022 21:55:54 GMT

I have the LP-E6 series battery and the camera turned on without the lens or SD card in it. Then I turned it off and back on again and it would not power up. This is the issue I have been having.

Re: EOS 6D Mark ii

deebatman316 — Tue, 11 Oct 2022 22:00:47 GMT

Does it do this with all 3 of your batteries since you mentioned that you have 3 batteries.

-Demetrius

40D, 5D IV, EF 16-35mm F/2.8L III, EF 24-70mm F/2.8L II, EF 28-135mm F/3.5-5.6 IS USM, EF 50 F/1.8 STM

430EX III-RT & 600EX II-RT

Re: EOS 6D Mark ii

shasta — Tue, 11 Oct 2022 22:06:28 GMT

Yes it does.

Re: EOS 6D Mark ii

deebatman316 — Tue, 11 Oct 2022 22:13:13 GMT

Will the camera act up with your old SD cards. As Tronhard mentioned avoid using micro SD cards in an adapter they cause they too many issues.

-Demetrius

40D, 5D IV, EF 16-35mm F/2.8L III, EF 24-70mm F/2.8L II, EF 28-135mm F/3.5-5.6 IS USM, EF 50 F/1.8 STM

430EX III-RT & 600EX II-RT

Re: EOS 6D Mark ii

Tronhard — Tue, 11 Oct 2022 22:48:40 GMT

I think it is time to consider calling Canon Tech Support at 1-800-OK-CANON. They can help you further and if necessary set up the process to have the camera serviced.

Re: EOS 6D Mark ii

shadowsports — Tue, 11 Oct 2022 23:55:52 GMT

Greetings,

In addition to the great advice above, and after removing card, lens, etc. Please perform a factory reset on the camera. Do both the camera and custom (C) menus reset. Then retest.

We also need to ask if the camera's power switch is loose or faulty?.. and have you upgraded the camera's firmware by chance?

Re: EOS 6D Mark II Doesn't Want to Turn On

kotty1 — Wed, 29 Oct 2025 06:22:29 GMT

I have an exact issue with my 6d mark ii

Re: EOS 6D Mark II Doesn't Want to Turn On

Waddizzle — Wed, 29 Oct 2025 06:48:54 GMT

“ I have an exact issue with my 6d mark ii “

I have had this experience when the battery grip had somehow loosened up. I tightened it back up and the camera powered up.