Just today I installed a matrix switch (consisting of 2 toggle switches). Before I powered on the xbox for the 1st time after installing the switches, I made sure with both original switches in the off position, and i set my toggles in mode 3. I turned on the Xbox and both the red and green LED's on the chip flashed on at the same time and i got no picture or sound but a SOLID GREEN light on the front of the xbox. I immediately turned it off, and removed the switches, and returned the original switch to mode 3. When I turned on the Xbox for the 2nd time, the xbox would still turn on without picture or sound with a SOLID GREEN light on the front. For the 3rd try, I totally removed the Matrix chip and powered on the xbox with the same results. I then thought I had definately messed up the onboard TSOP and the flash on the Matrix too, so i reflashed the chip successfully and tried to install it, but now matter how the chip is adjusted while in the original Mode 1, the light will never turn green. After that failed, I noticed that no matter what mode the chip is in BESIDES MODE 1, even if it is not aligned correctly, its LED will turn green as if it is functioning. I own 2 matrix chips and all of these results happed with both of them
another update - even when the dvd rom and hard drive are connected the eject button wont work , it just makes a weird clicking sound and the front light flashes for a few seconds the turns solid again. Ideas?
Thanx to all who can help.... and also if i cant fix this, and the xbox is fried, r there any ideas on how to return this for another one at a store since i bought it online and cant return it?