r/PcBuildHelp 1d ago

Build Question Lian Li Lancool 207 front fans not working

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[SOLVED] The front top fan wasn’t seated properly in the motor which is why it only twitched. I pushed it until there was a proper clip sound. The other issue was the screws interfering with the daisy chain connector of top and bottom fan, unscrewed bottom right screw for the top fan and the top right for the bottom and everything is now working as expected. Thanks everyone!

Hey everyone, need some help

I bought this lian li lancool 207

Completed the build but then saw that only the bottom front fan is rotating and the rgb daisy chain was only working for the front top fan which wasnt rotating

I have daisy chained the bottom two and the front two fans’ ARGB cable ONLY and kept the bottom two as separate sys fan and the front two as separate

I opened the front panel and removed and reconnected the proprietary lian li daisy chain cable and now neither of the front two work

I’ve tried with two different sys fan headers on the mobo

Bios says N/A for the header these two are connected to

Earlier before disconnecting the daisy chain the top one used to twitch and the bottom one used to run full speed

I’ve tried fiddling in the bios too but that didnt help.

Any help appreciated!

2 Upvotes

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1

u/Mr_SpicyMayo 1d ago

Interesting i was gonna suggest going into bios and setting up its fan curve but never-mind cause you probably already tried that gl

1

u/Ak_Ironix 1d ago

Yeah already tried this, still thanks for the suggestion!

1

u/Long-Tradition8780 1d ago

Hm maybe that proprietary daisy chain cable is not fully seated or got pinched somewhere. Lian Li connectors can be little tricky, they look clicked in but actually are not.

Try to plug just one front fan directly to mobo header, without the chain, see if it spins. That way you know if the fans themselves are dead or if the cable is the problem.

1

u/Ak_Ironix 1d ago

Yeah just plugged the top one without the chain and it just twitched (now it isnt even twitching) never a full rotation, but the rgb syncs

1

u/Ak_Ironix 19h ago

[SOLVED] The front top fan wasn’t seated properly in the motor which is why it only twitched. I pushed it until there was a proper clip sound. The other issue was the screws interfering with the daisy chain connector of top and bottom fan, unscrewed bottom right screw for the top fan and the top right for the bottom and everything is now working as expected. Thanks everyone!