It's the HDMI to AV board that's the problem.
...and the slip rings?
If you are just trying to change mini to micro HDMI then cable change should work.. I changed the mini HDMI on my Z15N to a Micro.. and used the one off a BMPCC Zenmuse for my Sony A6000 no issues..
My new GH4 HD Zemuse came with mini and micro cables...btw
The ends/ connectors at the HDMI board end look the same on all the Zenmuse's
Did you find a solution ?
I ended up purchasing a gh4 gimbal and unlike the gh3 there is no color combo on the cabling.up : could someone post a photo of their GH4 HDMI Converter board with the Slip-ring connector plugged in so that I can get color code for pinout.
Thank you.