P5 64x32 Panel (TC5020A/74HC245C) only lighting up top right quarter

[dom96]

I have got a panel from Amazon that I hooked up to a ESP8266 (NodeMCU). I created some code to light up all the pixels red (trying any other colour fails which is another thing that's broken), but only the top right quadrant ever lights up. I re-did the wiring twice now and seeing the same result.

Code: https://gist.github.com/dom96/e76624cf884feb4607cb7ec34b10d535 (I played with the setDriverChip but neither of the three values help)

PxMatrix version: 1.8.1

Pattern test just shows a red line moving down. Here is the result of my code:

And the back of this panel:

Any ideas what the problem could be?

[dom96]

So I have tried a bunch of things, including another panel (A P3 with a different chip) and it works absolutely fine with very similar wiring (it uses the E pin though, whereas this one has it set to ground).

I tried various things to get this panel to work, including various mux patterns and scan patterns (I basically tried them all). I only ever see red pixels light up and only ever the same quarter of the panel.

I also ran @xsrf's debug script. I only see the second line from the top of pixels light up, and they only ever light up red and only for half of the screen:

Sadly I guess the only conclusion I can come to is that this panel is broken and I will be returning it.

Just for reference, this panel has the following chips: TC5020A/74HC245C.