Acer 7720 Gemstone overheating - what can you do about it? - The only way to reduce the temperature of a Ace... | Lightquick Web Design - High Quality, Low Cost | Fan, Laptop, Temperature, Air, Degrees - Lightquick Web Design

Acer 7720 Gemstone overheating - what can you do about it?

Saturday, 15 January 2011

The only way to reduce the temperature of a Acer 7720 is to increase the
throughput of air across the heatsink and around the inside of the
laptop. Without dismantling the laptop and replacing the fan the only
way I have found of decreasing the temperature is to fit an external fan
above the square air intake on the underside. I bought a small 2"/50mm
low profile 12v fan and glued it using epoxy so that the fan will
supplement the air flow from the existing fan. I glued some piggy-back
screws (from old parallel printer ports) as spacers into the fan screw
holes and screwed a plastic circular lid (from a box of thumb
tacks/drawing pins) onto the top to prevent the fan from being
obstructed/touched. I cut slots in the lid surround to allow air flow.
This extra cooling has reduced the temperature of the GPU and CPU by 10
degrees centrigrade. I glued a similar spaced lid onto the right side of
the laptop base so that the laptop is level. Supplementary cooling is
essential to the Acer gemstone series of laptops, they run hot and they
crash pretty soon after the core temperature hits 85 degrees centigrade.
This Acer laptop design is flawed so this modification is an essential
task if you are going to use this laptop seriously.

I power the fan through a 5v feed from a nearby USB port. Two of the
fan's power leads (red and black) have been soldered to a spare USB
cable which is left permanently plugged in. The USB port provide the +5v
and the ground. I am writing this on the laptop now and it is 56 degrees
centigrade. Previously 70-75 degrees was the norm, I am running Windows
XP SP3 and doing nothing more than the usual word processing, web
browsing &c.

The fan I chose (AVC 12v ball bearing fan) is absolutely silent, much
quieter than the stock fan. This is important if the laptop is going to
be usable. This modification is more efficient in reducing the
temperature than the noisy active cooling pads with multiple fans and
consumes less valuable battery power.

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