for the last years I have been running my XBox 1.4 with a good old Xenium Blue and it worked fine and reliable.
Now, all of a sudden, I cannot boot anymore. I can see the chip's LED go from red to yellow and green (I am not even sure if this was "normal" as I did not watcht it closely anymore recently) but then the chip LED stays green, the ring stays yellow, nothing happens - as if the chip did not know which bios to boot.
Starting it with "Eject" or "Power" does not make any difference, I cannot get into the Chip OS
Taking of the chip, the original MS BIOS boots and I could run a DVD, so I assume it's no general hardware issue.
Any ideas? Any tip how to find out what's wrong? Could it be that a soldering issue occured during the years?