Using a splitter a third sys fan wont turn on

[mauriciofuentesf]

Hi there,
hey everyone, this is a problem i encountered in my first pc build!

So I had originally 1 fan on my Corsair SPEC-01 RED ATX Mid Tower Case(the front led fan it came with), yesterday i got a 2 pack led fans from corsair (https://www.amazon.com/gp/product/B00F6S0XJO/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1) .
I've got 2 slots for system fans on my board (MSI B250M BAZOOKA Micro ATX Motherboard). I was using the one fan in front and the other one was unoccupied. I bough a splitter and now I had the chance to install the 2 extras i bought, another one for the front and the other for the back. Wanted to connect the 2 on the front of the case using the splitter with one of the two slots I got on the motherboard (the other slot is occupied by the other led fan i got, in the back). Connected everything and started the PC, but one of the fans still won't work(the extra one from the front connected to the splitter).

Also in the BIOS settings I've got the option to control only 2 cha fans. they are bothe in dc mode

Any ideas? Any software I need to use? My motherboard won't run a third cha fan even with a splitter?

Will really appreciate some opinions and help.!

extra information:
both of the fans work, connected them separately to the only connector of the splitter that turns on the fan and it works. the other connector just wont power up any fan, i got 2 splitters and both behave the same way.
heres the splitters i bought:
https://www.amazon.com/gp/product/B01EF9OI0O/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1


the fans are 3pin fans, and the splitter is a 4pin to two 4pins connectors

Best regards!

 

[cin19]

From the linker you posted, the fan can draw 2X .40 A=0.8A , maybe more, usually the MB fan header can only output 1 Amp or 12W. So the problem is from those fans on the Y cable, you can try use one fan to see the PC works fine or not. If it does, you can confirm the problem where is from. I know some of MB have the high Amp fan header, but your MB does not have.

Or to connect the one fan to the PSU by the 3-pin to 4-pin molex cable. http://i.ebayimg.com/images/i/131319664168-0-1/s-l1000.jpg Or buy other low Amp fan. Also the fans have 3-pin connector, you can only control them by voltage, not pwm ( only for the 4-pin).

 

[mauriciofuentesf]

From the linker you posted, the fan can draw 2X .40 A=0.8A , maybe more, usually the MB fan header can only output 1 Amp or 12W. So the problem is from those fans on the Y cable, you can try use one fan to see the PC works fine or not. If it does, you can confirm the problem where is from. I know some of MB have the high Amp fan header, but your MB does not have.

Or to connect the one fan to the PSU by the 3-pin to 4-pin molex cable. http://i.ebayimg.com/images/i/131319664168-0-1/s-l1000.jpg Or buy other low Amp fan. Also the fans have 3-pin connector, you can only control them by voltage, not pwm ( only for the 4-pin).

well thats something, i guess thats why it wont power up a second fan, both work, ive tried them separately, guess ill have to get lower amp fans, but for now ill get the molex!
thanks man!, really appreciate it!

 

[Paperdoc]

You do not need lower-power fans. 0.8 amps total pull on a single SYS_FAN header is quite acceptable.

You have three fans, and individually they all work. When connected one at a time to your Splitter, they all work on one of its output arms, but none work on the second output arm. Then the Splitter's second arm is faulty. Look for a bad connection in one line between the input connector and the faulty output arm. Specifically, the only two lines critical to fan operation are those on Pin #1 (Ground) and Pin #2 (+DC volts).

NOTE that of the two output arms, one will be missing Pin #3. That is NORMAL. A Splitter should connect the signal (speed pulses) from only ONE of its fans back to the mobo header and NOT connect to the second fan. This does NOT affect fan performance at all.

Note also that using a 4-pin Splitter with 3-pin fans is just fine - it should work perfectly. The 3-pin fans simply will not connect to Pin #4 which they do not need.

 

[mauriciofuentesf]

You do not need lower-power fans. 0.8 amps total pull on a single SYS_FAN header is quite acceptable.

You have three fans, and individually they all work. When connected one at a time to your Splitter, they all work on one of its output arms, but none work on the second output arm. Then the Splitter's second arm is faulty. Look for a bad connection in one line between the input connector and the faulty output arm. Specifically, the only two lines critical to fan operation are those on Pin #1 (Ground) and Pin #2 (+DC volts).

NOTE that of the two output arms, one will be missing Pin #3. That is NORMAL. A Splitter should connect the signal (speed pulses) from only ONE of its fans back to the mobo header and NOT connect to the second fan. This does NOT affect fan performance at all.

Note also that using a 4-pin Splitter with 3-pin fans is just fine - it should work perfectly. The 3-pin fans simply will not connect to Pin #4 which they do not need.

thats what ive been researching all day long, i noticed one of the arms has 3 pins, but it was totally okey because of the pins that is uses (GND and 12V)
the pack came with 2 splitters so i gues both are faulty, fans work, when connected to the 4 pin arm, they power up, but when connected to the 3pin arm they dont, i guess all return them or buy another ones!
ill check them at work with a multimeter

thanks !

 

[Paperdoc]

Thanks for Best Solution, and good luck finding and fixing the problem.

 

[mauriciofuentesf]

Thanks for Best Solution, and good luck finding and fixing the problem.

my man, as you said, the splitters were damaged, thought of returning them but the shipping would cost me the same as buying new ones, which i did, and this one worked as soon as i connected it! thanks for the healp really appreciate it!

 

[Paperdoc]

Glad you found the solution, and thanks for updating us.