Hi Phil, On Mon, 11 Jun 2007 12:55:06 +0100, Phil Endecott wrote: > I've put a couple of photos of my J7F2 board here: > http://chezphil.org/tmp/j7f2_cpufan_top.jpeg > http://chezphil.org/tmp/j7f2_cpufan_bottom.jpeg > > In the top photo, you can see an unpopulated position for a transistor > ("Q1") next to the CPU fan connector. In the bottom photo, you can see > a "zero-ohm resistor" and some more unpopulated positions (the three > pins on the left of this picture are the bottom of the fan connector). > > If your board looks similar, you're right that you can't control the > fan speed. If you have a transistor and other components near the fan > connector, then keep trying! Very interesting. This trick seems to work for other motherboard brands too. I have an Asus board here where I can't control the CPU fan and bingo! there's unpopulated room for a 3-leg component labelled Q12 next to the CPU fan header. So it seems that they designed the board with fan control in mind, and finally didn't solder the required components. Maybe because they share the same design between different models. -- Jean Delvare
