Author Topic: Help: Canon 70d will not turn on after using ML  (Read 522 times)

modernflight

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Help: Canon 70d will not turn on after using ML
« on: November 21, 2017, 09:54:52 AM »
Hello, out there!

Recently I have used the Magic lantern build for the latest version of the Canon 70d. It was working perfectly for a couple days but recently the LCD screen crashes after a minute or so and I am left with a glitch like pattern on my lcd. The only way to remove this was to take the battery out. I tried using a different SD card and still happened so I removed magic lantern from the initial SD card through the standard format option in the camera menu. Following this the LCD crashed like it did before, out of desperation I then formatted the SD card using a computer and tried again but the same problem remained. Finally after continually trying the camera eventually would not turn on and now I am here unsure what to do, I've been trying to follow the trouble shooting guides but I really don't know whats going on.

Any help would  be greatly appreciated!

Walter Schulz

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Re: Help: Canon 70d will not turn on after using ML
« Reply #1 on: November 22, 2017, 07:02:48 PM »
Make sure to backup ROM0.BIN and ROM1.BIN (if any) stored on your ML card to another device.
Use EOScard (Windows) or Macboot (OS X/macOS) to make card bootable again. Copy "Portable Display Test" Autoexec.bin to card. https://www.magiclantern.fm/forum/index.php?topic=2296.0
Remove battery.
Insert card.
Insert battery.
After closing battery lid your cam should show diagnostic message.
Report back.

lmixon77

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Re: Help: Canon 70d will not turn on after using ML
« Reply #2 on: December 17, 2017, 07:39:51 PM »
The 70D is flaky without ML loaded. Mine froze for no reason. This was after Canon replaced a failed CPU post-warranty for $400 (a known issue with 70D's). All without ever loading ML. The fix for me was to load a fresh card and battery, then switch the ON/OFF button back and forth quickly and firmly. It eventually powered up. Go figure. I also have an 80D with no problems. I recently loaded ML on the 70D to film raw, and I have had no problems since. Good luck.