I got the "Please turn camera off and then on again" message. Doing so did not solve the issue. When i do this I hear a slight sound and can see the shutter trying to move slightly but remains like in the first photo.

In the second photo - I tried to manually open it and I saw that another part is stuck behind the outer blades.

My questions: is there a way to find out if its a hardware or software failure. Is it something that can be fixed DIY style or is the camera a paper clip? Does anybody has a official Panasonic Repair Guide/pdf by chance?

I have looked around for a replacement shutter unit (in case it is a hardware failure) and its not exactly easy finding one (comparing to canons and nikons or even gf2/3 which are abundant and cheap etc). Any suggestions and help will be greatly appreciated!

I now own 3 cameras. The GH2, BMPCC and the GH4. For the Blackmagic I bought the BMCC Speedbooster, so I can use it on the BMPCC and the GH4, if I would buy it any time soon. And I did - today. Excited about the Speedbooster working with my Nikon Glass and getting away with no vignetting in UHD mode (crop factor 2,3 becomes 1,472 like APS-C), I just wanted to give the Custom White Balance a try, since I had to dial in the correct color temperature on the BMPCC, I wanted the luxury back, to have the right settings at the push of a button.

So I was just about to flex my finger and set Custom WB... when I remembered... my GH2 always using the mechanical Shutter, when taking the custom WB. Cause I want to use the GH4 a little longer, I dismounted the BMCC Speedbooster and took the Custom Whitebalance.

Long story is short: Even with activated Electronic Shutter, the GH4 still uses the mechanical Shutter for Custom White Balance and can be damaged with attached BMCC Speedbooster. Since the SB touches the inside of the Shutter Casing and even leaves a mark there due the pressure of the adapter, when it´s attached.

So better stay with the Blackmagic way of dialing in the color temperature or use your MFT Kit Lens - if you own one - to do the work.

By the way.... am I the only one who sets custom WB? Cause I didn´t read about this issue anywhere else. At least the BMCC Speedbooster Users don´t care much about it and stick with automatic WB ;-)

That´s it for today!

Cheers from Austria! Stefan