I am replacing all components in the darkened area. They all look okay, and test the most basic of tests, but since they are so cheap, why not.
I cant inject known voltage, because none is specified.
I dont see where the output side is. I lose the traces under a large inductor, and next to a transformer.
If anyone knows where to find the schematic, I know they are out there somewhere because other people have found them, that would be a great help!