Help with 128x64 FM6124D Panel (1/32 Scan) - Dead rows / incorrect mapping

[jonms]

This sounds like the manufacturing problem I spotted.
If it is then do contact electrodragon and they’ll send a replacement!

They said they were contacting everyone who purchased a faulty board.

New electrodragon board version with E line problem?

I ordered some electrodragon boards and they are marked as V 2-2. They look different to the pictures elsewhere and appear to have a problem with the E line. My existing setup works fine with the adafruit bonnet, so I know the matrix boards are good. With the electrodragon boards I get the ‘missing band’ you’d expect without the E line. After trying every conceivable option combination with the test/demos I put a logic analyser on the output and found there’s no E line signal on pin 4 or 8, …