problems with acer aspire 5520g PROBLEM FIXED
Channel: xegos
Date: 06/01/2013

Please notice I am NOT IT EXPERT. Remember figures below are for guidance only as hot air guns and laptops vary. Remove nozzle from heat gun set it to about 200C (392F) and medium speed blow on the chipset for 3 to 5 min. Try making circles while blowing, be carefull at this stage. Mask any plastic parts with some tape otherwise you will melt them. Purpose of that is to preheat chipset. Please notice I am NOT IT EXPERT. Now fit the biggest nozzle, set your heat gun to 400C (752F) and full speed and burst directly at chipset making little circles, hold gun up right 0.5 to 2 inch above chipset. 
After 30s job is done. 
. Dont forget pop out battery before any rework.
For those who don't know the problem is: when I push the on button it goes to power up, the light flashes green and then it clicks and stops. I fixed that problem See previous vid http://www.youtube.com/watch?v=a5rgc1phdrY