Question about Acer Extensa 5420-5687 Notebook
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Posted on Jan 02, 2017
Just for the heck of it, try blowing out the cooling fan with some compressed air. If you have never cleaned it and the fan stops turning, the computer will go into a safe mode and not start up.
Ther should be a vent somewhere on the side of the laptop that vents hot air cooling the CPU. That is where you need to blow it out.
Hope it helps- just a longshot...
Posted on May 27, 2009
SOURCE: Acer Extensa 5630 not booting
seems you have two problems
the ribbon cable on the lcd may be loose,
or need replacing ,
also check the pin in the dc jack if it moves at all or need to wiggle the ac adapter,it could be bad jack, but first make sure the ac adapter end is not bad, as the hole in the end gets bigger , it may not be connecting right
Posted on Jul 21, 2009
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 (<ital>very lucky! this gave me the clue I was looking for!</ital>). 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
Can you give a location of R138?
Is it on the easy side? E.q. the side of the motherboard wich is accessible by removing the bottom plate? I see Q24, located close to CPU. If possible, post a picture of R138, with some components visible.
Posted on May 11, 2010
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