70D Freezing During Video, then Permanently Locking Up

I do quite a bit of video with 70D, generally about two hours in a session (broken for a few seconds every 20 minutes because of the EU legality 30-minute shutoff). I've been doing that two or three times a month for about two years (I use three 70D cameras for each session).

Last weekend, I had done about twenty minutes of video, turned one camera off for maybe five minutes, then started video again. After about seven minutes, the LCD image and the top LCD both froze. Shut off, the image didn't disappear and the LCD didn't turn off. Pulled the battery and the image and LCD shut off. Put the battery back in and heard the mirror drop. Started again, ran a couple of minutes, then froze again. Changed the battery, the lens, and the SD card, and it started for a couple of minutes.

The third time it froze, after I pulled the battery the camera was dead. Totally dead. Changing nothing brings it back to life.

I did some Googling when I got home and discovered this is not an unknown problem. There are a few YouTube videos on it, and the Canon consumer forum has several posts about it (with no contribution from anyone in Canon).

No cause seems to be known. The only fix appears to be replacing the main circuit board, a $450 repair by Canon. No word from Canon about it.

I had problems with a 70D. When I called Canon Support, they agreed with me that the camera was not behaving properly, and to please send it in. I did this twice. Twice they said it appeared defective. Twice I sent it in. Twice I got it back with the exact same problem. It is all over Canon's own forum with no comment from Canon about it. I dumped my 70D. I have as much faith in Canon Customer Service as I do in Best Buy's Geed Squad (Zero, none, nada, zilch!).

RDKirk wrote in post #18316287
I do quite a bit of video with 70D, generally about two hours in a session (broken for a few seconds every 20 minutes because of the EU legality 30-minute shutoff). I've been doing that two or three times a month for about two years (I use three 70D cameras for each session).

Last weekend, I had done about twenty minutes of video, turned one camera off for maybe five minutes, then started video again. After about seven minutes, the LCD image and the top LCD both froze. Shut off, the image didn't disappear and the LCD didn't turn off. Pulled the battery and the image and LCD shut off. Put the battery back in and heard the mirror drop. Started again, ran a couple of minutes, then froze again. Changed the battery, the lens, and the SD card, and it started for a couple of minutes.

The third time it froze, after I pulled the battery the camera was dead. Totally dead. Changing nothing brings it back to life.

I did some Googling when I got home and discovered this is not an unknown problem. There are a few YouTube videos on it, and the Canon consumer forum has several posts about it (with no contribution from anyone in Canon).

No cause seems to be known. The only fix appears to be replacing the main circuit board, a $450 repair by Canon. No word from Canon about it.

Hi,
I am working with Canon for same Issue. Canon quoted me similar price. It is suppose to be known issue based some groups on youtube (Canon 80 err Europe group). Canon is fixing it free in Brazil. I am talking with Canon.