fault (takes up to ten times to start)
 

hi all
I have installed over 1000 xbox chips and have had 2 machines that wont turn on on first try. After about 5 tries they usually boot ok but can take up to 15 . Both have alladdin advance with code 4977. I have changed chips and power supply but no luck.
Any ideas?
cheers

where are u located?
and is the "code" the bios?... if so.. is it the x2 4977?