>>>>> "Russell" == Russell Senior <[email protected]> writes:
>>>>> "Denis" == Denis Heidtmann <[email protected]> writes: Denis> My googling makes me think that the third wire may have RPM Denis> data. Can you bench test with a 'scope or dvm? Russell> The connector is *tiny*, but I may be able to find one in my Russell> prodigious junk pile. The fan never even twitches when I Russell> power on. I played with it some more this evening. I am fairly confident it is not a thermal grease issue. It beeps its "fan error" message before anything could possibly be warm enough to matter. Furthermore I am fairly confident it is not a problem with the new fan. I've tried plugging in all three of the heatsink fans in my possession, none of them move at power on. I don't know if the motherboard even tries to run the fan immediately, or waits for some signal from the thermal sensors to decide to spin up the fan. I will probably haul out my oscilloscope to look at the power pin, but I'm not sure what normal behavior is. The available evidence sort of implies something wrong with the motherboard, which is somewhat suspicious because of the odd timing of waiting until I tried to replace the fan. The *most* plausible thing is that there is a mechanical switch that the fan retention hardware is supposed to depress, that I am somehow not depressing. But there is no obvious evidence of that switch. I've looked around and not found one, and the hardware manual is silent. *That* is depressing. I also tried the trick of blowing canned air into the fan during bootup to supply whatever tachometer data it might be expecting. No help. Maybe I can feed 5V to the fan from somewhere else on the board with a skinny wire. Sad to be typing this message on a tiny netbook and not my nice 1600x1200 laptop :-(. -- Russell Senior, President [email protected] _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
