Question about Acer Aspire 4520 Notebook PC

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I have a acer aspire 4520 notebook computer and

I have a acer aspire 4520 notebook computer and it was working fine last night but today it won't even power up. When I press the power key it breifly lights up as well as the 3 lights on the left indicating the hard drive, key lock and other lock idicator briefly light up also then blacks out, the screen doesn't even attempt to power up. Any help in fixin this would be greatly appreciated

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Okay, Here's the deal..... I recently had the same problems with my friends' Acer Extensa laptop and here's what I did to fix it. I narrowed the issue down to two culprits 1. Overheating, 2. Defective Motherboard. I have fixed the problem but I takes time, patience and some technical ability which may not be available to some. :( (Swapping out the motherboard MAY fix the problem but if the defect is in the manufacturing process then the problems could return). Here's how I fixed it... While in the process of disassembly I noticed a small electrolytic capacitor that had seemingly broken off and had become wedged between the frame (very lucky! this gave me the clue I was looking for!). This made me think that it had broken off the motherboard. I proceeded to disassemble the laptop and found the location of the missing capacitor (there are two located right next to each other on the board) and was able to re solder the capacitor back onto the motherboard (could it be a manufacturing processing defect thats causing these to break loose? ). Mine was broken off due to what looked like bad solder joints. Your capacitors could still be attached but have weak solder connections. Also while i had access to the motherboard, I used the opportunity to clean and re apply the heat sink compound to the CPU and thoroughly clean the fan vents. I then reassembled the laptop and EVERYTHING has been running fine now for the last 3 days. Total time was about 4hrs and it cost NOTHING to repair. GOOD LUCK :)

Posted on Mar 14, 2010

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I'm having tha same issue with my 4520. I found the service manual at this link. http://printer1.blogspot.com/2008/01/acer-aspire-4520-service-manual.html

It has a good troubleshooting and dis-assembly procedure. Unfortunately, mine loks like a bad motherboard. If you find a solution let me know.

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