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Cooling the ONT

Clearmind60

Regular Member
Anyone else has started to cool their ONT?
I noticed that it was constantly hot, then placed it onto a 3.5" hard drive as a heat sink.
This helped a bit as I touched the HD, and it was pretty warm. I have a USB mains adapter which I can select a voltage. So went to eBay and bought a 5 Volt USB powered fan, connected to the adapter, and then placed this on to the ONT. I can feel a very small amount of vibration, but the ONT is now cool to the touch.
 
Was the ONT uncomfortably hot to the touch, failing or showing signs of instability?

If so, I would have been asking the ISP to get it replaced rather than coming up with DIY Solutions. If not, then I honestly wouldn't have bothered with any of this.

My CityFibre ONT (Calix GP1100X) Runs quite hot but nothing that I feel is unsafe or problematic. It's been fine for close to a year now and I haven't felt the need to try and cool it.
 
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It gets warm, I can leave my hand over it easily. Why I mentioned this my Qotom pfsense firewall get hot and I use a fan over it. Temperature dropped by about 15 celcius.
 
They are designed to heat up. You don't need to put a fan on it.
 
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