How to test a laptop cooling fan (to determine if the cooling fan is clogged or not.) Would a wind meter work?
Posted on 2011-10-16
Hi I repair laptops and I have had so many customers bring laptops in latley where the cooling fans are clogged. One recent laptop that was brought to me was 100% clogged with dust, (dust thickness was uniformly 1/4" thick) and caused the cpu to overheat.
I was wondering if anyone came up with an accurate method to measure if the fan is clogged or not? I have had times where I put my hand over the side fan and felt air blowing, but ended up seeing a 50% clogage (or more). So clearly an accurate method is not just seeing if the fan is blowing or not, because even though it may be blowing out some air, doesnt mean it doesnt have a major clogage.
I recently saw an eppisode of "Holmes inspection" (home improvment tv show) and they used a wind meter to see how poorly the A/C system was working in the house. They made the repairs then tested it again and they saw like a 30% increase in windspeed (after all repairs were made). That made me wonder if a wind meter can be used for a laptop to see how much air its pusing out the side vent? I am sure the air levels would varry per manufacturer / model but it has to be more accurate then just feeling the air with your hand I would imagine. Did anyone ever test this or know if a wind meter would even measure the air pressure that the internal fan blows out?