PL4YD34D Posted December 22, 2005 Posted December 22, 2005 evenin all. ive been reading this board for a while now and thought that by the time i'd built my new system i'd know what to do. so its a little embarrasing to be on here asking for help with such a simple sounding issue. my front and rear fans dont come on! ive got em hooked up to the fan2 and fan4 connectors on the board and the temps set in BIOS to kick in at 25C,(the lowest it will let me set) but nothing!no spinning, no cooling, not even a hint of motion. i dont want to hook em straight into the PSU coz they'll be at full speed all the time. any ideas? what have i overlooked? Quote Share this post Link to post Share on other sites More sharing options...
Guest thespin Posted December 22, 2005 Posted December 22, 2005 Do they stay off as the system heats up or are you shutting down quickly ? Quote Share this post Link to post Share on other sites More sharing options...
PL4YD34D Posted December 22, 2005 Posted December 22, 2005 ive had the system running for about 3hrs as im burning in. the temps are good but im sure the fans should be on. CPU is at 33C and PWM 38C. the only fan doing any venting is my PSU fan.(12CM on OCZ Mod 520W) Quote Share this post Link to post Share on other sites More sharing options...
Guest thespin Posted December 22, 2005 Posted December 22, 2005 Is your chipset fan running ? What's your chipset temp ? Try the fans on two of the other fan connectors ... Quote Share this post Link to post Share on other sites More sharing options...
PL4YD34D Posted December 22, 2005 Posted December 22, 2005 chipset fan is purring like a kitten, well its purring like a kitten with a megaphone actually, but spinning yes. i will try and get some life out of them on diff connectors and test them thru PSU and fan speed controller then post back. Quote Share this post Link to post Share on other sites More sharing options...
PL4YD34D Posted December 22, 2005 Posted December 22, 2005 ok. i have solved the problem and in doing so presented myself with a new one. it would seem in my eagerness to build the damn thing i didnt notice that the fan connectors only have speed sense wires attached and no power or ground cables at all. so it would seem im going to have to splice the cables out of the molex connector and introduce them into the 3pin m/b connectors. nuisance! what a stupid way to cable the fan connectors. thermaltake (soprano) - off my christmas list! cheers for your help anyway thespin. Quote Share this post Link to post Share on other sites More sharing options...
LDog69 Posted December 22, 2005 Posted December 22, 2005 ok. i have solved the problem and in doing so presented myself with a new one. it would seem in my eagerness to build the damn thing i didnt notice that the fan connectors only have speed sense wires attached and no power or ground cables at all. so it would seem im going to have to splice the cables out of the molex connector and introduce them into the 3pin m/b connectors. nuisance! what a stupid way to cable the fan connectors. thermaltake (soprano) - off my christmas list! cheers for your help anyway thespin. This is actually the preferred way. A common recommendation is to *not* power fans using the motherboard headers. With this, you can still monitor the speed of your Thermaltake fans without powering them off of the header (and rather, through your PSU, which is recommended by DFI). You've run into a feature, not a problem. :nod: EDIT: Also, your mobo can only control one external fan, afaik (fan 2). And it can only do this based on the PWMIC's temp reading. If this fan is in the front or rear of case, its unlikey to change the PWMIC's temp reading much. Thus, you won't be getting noise/speed control, at least not the type you're looking for. Quote Share this post Link to post Share on other sites More sharing options...
PL4YD34D Posted December 22, 2005 Posted December 22, 2005 cheers for that. much appreciated and assimilated. i still think a 3 way fan speed controller will be on the cards tho Quote Share this post Link to post Share on other sites More sharing options...
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