Having problems with your Dell Dimension 8400 PC Desktop ?
Dell 8400 steady amber light, no diagnostic LEDs, high turbo fan
\015 Immediate amber light when power button is pressed. CPU fan takes off like a jet engine. None of the diagnostic LEDs light on the back.Removed and reseated all boards, memory, cables, etc.Also, with all cables unplugged from motherboard, same result at powerup. No diagnostic beeps, either.Motherboard? CPU? PowerSupply? Other?I don't want to give up on this system. Any help would be appreciated.\015
I have this problem with my 8400 also. After lengthly research, it appears that bad capacitors on the motherboard is the overall consensus to the cause of the problem. If you look for caps that have swelled and in some cases leaked electrolyte (a brown/tan color) you might fine your problem. You can replace the bad capacitors if you are comfortable with doing it or replace the motherboard.
You will need to change your processor is like it is bad.
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