Last year, I repaired an NZXT Signal 4K30 USB capture device that I bought on eBay for cheap. It was completely dead, and the cause turned out to be a bad solder joint on an inductor, which prevented power from getting to a crucial part of the board.
After I fixed it, I tried using it to capture signals from a bunch of different HDMI source devices to make sure it worked correctly. As I said in my last post about it:
I did find one 720p60 HDMI source that it doesn’t like — the captured video shows up as pink and green.
In that post, I also pointed to a few Reddit threads (1, 2) where similar issues had been observed on a PS5 and Nintendo Switch, respectively.
Here’s a snapshot of what captured video looked like from the one HDMI source that it didn’t like:
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