120mm fan powered by USB from TV?

chid76

chid76

chid76

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25 May 2010
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I have just set up a Denon AVR X2200W amp and the centre section of my TV bench is getting a bit toasty.

I have the amp at the bottom, then a glass shelf with my PS4 and media streamer above. The PS4 is getting too hot when gaming with the amp on, which is leading the fan in the PS4 to run at 100%.

My TV (LG 42LB650V) has got a couple of spare USB ports on the back and I was thinking of wiring up a quiet 120mm fan so that it would turn on with the TV, enabling me to fit it to the back of the TV bench to draw out some of the hot air.

Have any of you done this before? If so, can you point me in the right direction of a suitable fan and adapter? or is there another solution that would be better?

Thanks :)
 
pioneer2000 said:
The problem is the PS4, which has insufficient cooling when enclosed in a restricted space.

Your amp is hardly raising the ambient temperature by a large margin!
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The amp is definitely raising the temperature by a chunk as the PS4 is fine on it's own. I would rather not have a quiet desk fan flowing cool air onto it to keep it all cool. I think with a little expelling of the hot air, things would run a lot cooler.
 
Ste said:
This will definitely work the only challenges are whether a 12v fan will spin up at 5v and whether you get one with the right header (USB) or not.

If you're going for a regular PC fan and swapping the converter out (easy if you can solder) then look for one that comes with a 5v in line resistor like the Noctua ones. If they come with a resistor to drag a 12v motherboard header down to 5v it's a safe bet they will spin up at 5v via USB.

Google 120mm 5v usb fan and the answer shall be yours...
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Cheers, I have managed to source one on Amazon for £13 that has the USB connector and a low voltage fan that has a 3.5v start-up.
 
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