PS5 edm 031 single blue flash

Hey all, I’ve got a PS5 (1215a) that’s got the single blue flash and power off issue. I’ve got the board out and am doing some testing. I’ve got continuity a whole bunch of places, so I’m not exactly sure where to look. Any suggestions on where to start?

TRY to measure resistance to ground if all fuse are good

Measuring from a couple of different points (the coils near the APU and HDMI ic chip have a growing value as it goes. The one closest to the psu plug has none but by the last one it’s at around 5) I have almost no resistance (I’m using a fluke clamp meter so it’s not SUPER accurate at that low of a resistance) but generally very little resistance