[quote=“glaeken, post:4, topic:259833”]
Subsequent attempts to boot have both PWR and SYS light illuminated, and the heat sink will again get very hot, so something is happening. No lights on the ETH port, even when connected to a network.
I’ve done some digging around to see if it might be the rpi or the host board that might be the issue. Even after imaging the eMMC (so we kind of know the CM4 still works), I still can’t get any output from the screen. I’ve attempted installing RISC OS and RaspberryPi OS (latest).