Can someone please advice. I have a dell dimension 4400 desktop and i notice the cpu fan had stop spinning so i had it replaced but still did not spin. i had my husband test the connector on the MOBO but the pin that supports the black wire he said was dead. i really like this computer and would be so glad if someone can advice how to solve this issue. i am a newbie to solving these issues now learning. PLEASE HELP!!
you can run the fan off a molex if you like, just get a 3pin to molex adapter...
the only issue is the cpu fan will then run at max speed all the time... which in most cases isnt a problem unless its particularly noisy.
also as you hubby is able to spot a dead connection its likely he knows how to use a soldering iron... get him to check the solder on the pin and retrace it back and soler any dry joints on the way that seem suspect...
dont use a soldering iron over 25w though as it will likely damage the board. this is potentially dangerous to your motherboard so do it at your own risk.
is the type of adaptor you would want, the block from the cpu fan plugs onto the pins, and the molex block plugs into the molex from the Psu,
do you have a picture of the fan and adaptor we could see?