Guys, I have 3 G4 Cubes all in working condition yet one has a strange issue...
This cube was purchased as non working and then had a cpu, motherboard, vrm & gpu transplanted into it to make it work.
Other than a broken usb port (pins have been pulled out to un-short it) which will eventually be replaced with one from another motherboard, all is perfect but it does not play nice when a power button is connected.
If a power button/switch is connected to the motherboard the computer auto-starts as soon as the power cable is plugged in, and the led on both the cube switch and Apple Display power switch flashes rapidly and then switches off and the does this power cycle loop forever..
Once I completely disconect the power button from the motherboard the computer starts up fine from the screen and works flawlessly and does not auto start up, it powers on once the screen switch is pressed like it should.. I have 3 spare proximity switches other than the ones on my working cubes so I have troubleshooted with 6 switches and cables all with exactly the same results.. If I push the switch connector only halfway into the motherboard port it sometimes works which leads me to believe there is a short on the black power switch connector port on the motherboard, or the broken usb is messing something up, yet it will work perfectly for hours once the switch is disconected..
Any advice will be great in this situation.
P.S. On a side note I may have accidentally plugged my Harman Kardon Pro Speakers into the broken usb port and they no longer work. They are not detected on any of my 3 cubes.. I have taken them apart like in the pics attached but I have no idea what to test them for...
Thanks
This cube was purchased as non working and then had a cpu, motherboard, vrm & gpu transplanted into it to make it work.
Other than a broken usb port (pins have been pulled out to un-short it) which will eventually be replaced with one from another motherboard, all is perfect but it does not play nice when a power button is connected.
If a power button/switch is connected to the motherboard the computer auto-starts as soon as the power cable is plugged in, and the led on both the cube switch and Apple Display power switch flashes rapidly and then switches off and the does this power cycle loop forever..
Once I completely disconect the power button from the motherboard the computer starts up fine from the screen and works flawlessly and does not auto start up, it powers on once the screen switch is pressed like it should.. I have 3 spare proximity switches other than the ones on my working cubes so I have troubleshooted with 6 switches and cables all with exactly the same results.. If I push the switch connector only halfway into the motherboard port it sometimes works which leads me to believe there is a short on the black power switch connector port on the motherboard, or the broken usb is messing something up, yet it will work perfectly for hours once the switch is disconected..
Any advice will be great in this situation.
P.S. On a side note I may have accidentally plugged my Harman Kardon Pro Speakers into the broken usb port and they no longer work. They are not detected on any of my 3 cubes.. I have taken them apart like in the pics attached but I have no idea what to test them for...
Thanks