I'm not sure what it's actually called (jewel?) but the LEDs that light up the ring around the eject button on my Xbox v1.0 doesn't work.
I took the Xbox apart and tested the LEDs with my multimeter set on diode mode and the LEDs do light up (for those that might not know diode mode on a digital multi meter will usually provide enough power to light a LED).
I then did a continuity test between the 3 legs on each of the LEDs to the connector pins on the back of the board and found not problems.
I then powered up the board to test for voltage going to either of the LEDs and there is none.,
My guess is that corrosion damage from a bad clock capacitor (now removed) has caused an issue with the power traces going to the LEDs..
Is there a guide anywhere on fixing the trace(s) that provide power to the LEDs? or would it be easier to pick up power from somewhere else like from the leg of a voltage regulator or somewhere else?