Aspire 7520G motherboard re-melt: Successful

Please post a thread with your problem BEFORE you attempt this.
This is a last ditch effort only. Your problem may not be caused by an issue that this will fix.

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As gavinzach has stressed this is a last ditch and also a one shot go at recovery. This process should not be repeated, why -

On the motherboard there are miniature SMD Electrolytic Capacitors, these are the tin can looking devices. They have a liduid inside, the electrolyte. When subject to this high temperature this will boil off. However they are desiged to tollerate a very short period of high temperature and within the limits of this oven bake depending on the age and condition of these capacitors they should survive.......no guarantees given.

On the extreme side these capacitors can swell and explode. So be warned.

I still have a preference to use a heat gun locally at the gpu, southbridge and northbridge chipset to remelt the BGA (ball grid array).

I am not trying to stop this process as it is so successful but take advice from gavinzach and the exact sequence and process pamook has laid down. Also take into account my warning with the capacitors.

Follow the instruction and times to the letter, do not be tempted to increase the temperature or time.

Myself and gavinzach will only recommend this procedure once all software and hardware issues have been attempted and exhausted.

ONE SHOT LAST DITCH. You have been warned!

Hello guys, this story is just unbelievable! You guys totally made my day, im joingin the pamook fan club! ray:

So here is my story, Acer Aspire 7520g, Its not mine, its my mothers laptop but i used it for 6 months, until the day it died. I just shutdowned it that night and in the morning - black screen, fan is running, no bios screen no nothing. The HDD light turns on a couple of times and then goes blank and the fans run quiet. Natuary i was blamed for breaking the expensive laptop. Im really into computers and hardware, there is not a problem i can't fix, i mess with computers since i was a little kid.

I imediatly opened the laptop, cleaned it, deasembled the heatsinks, CPU, VGA, RAM and PCI cards, tested the ram stiks individualy, removing the battery and holding the ON button for 30 seconds - nothing. I red about pushing the keyboard down and then turning it on but it didn't work at the time. I red everything i could find in the web and tried it - nothing again.

Long story short, the laptop was left for repear (payed reapair) for three times, the first time it worked for 2 weeks, the second time for a couple of days and the last time was a week ago. They said that it was a vga problem. During the repairs the laptop was used very careful, no 3d applications, only internet, logged the temperatures and eveyting. And this morning i woke up and started the laptop ... SAME **** > I come to the conclusion that those repairs are done by amateurs who don't know what they are doing only for the money.

I searched again because i want turn it on. So i came to this thread about pushing on the two sides of the touchpad, i tried it (pressed really hard until the screen loaded with the bios D) and then released it while the windows was loading. The first try i released the touchpad to early and i got a blue screen. But after the restart it, same story, i tried again and it loaded and after the tird time pushing didn't worked.

So i found this thread. If this is depending on me, right now the mb will be in the oven while wrighting this post , but unfortunatly im having some problems because its not my latop.

So meanwhile my mother realizes that she can trow that machine in the garbage or let me do my stuff im going to watch this thread with a big smile on my face. :wave:

elieforpp said:

hey guys...I couldnt believe it but its true...my acer is working again. thank you pamook.ray:ray:ray:
still...can pamook or anybody else tell me if their acers are still working (more than 2 weeks :wink
thanks again

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LOL, yes, its still working fine, now its like 4 months if Im not mistaken... The only bad thing occured is a one dead pixel in the screen in upper right quarant, but that can be ignored :laugh:

I recently tried this re-melt with two PCI-X VGA cards I had lying around with artefacts showing in display, one lower quality had some not-so-good elco capacitors (not metal case ones found on newer VGAs but standard elcos in metal can wrapped with plastic, the writings said 105C but seems like 210C was too much :1angel: ) and they leaked while in oven, other one had no problems but its still waiting for me to assemble it and try to see if anything (good or bad) happened...

Glad to see more and more ppl found this thread helpful, and tbh, as much as one is aware that it simply cannot be that 100% procedures are successful, this level of fixed/still broken ratio surprised me (and still does) in a good way ray:ray:

thank you ppl for keeping this thread alive and posting your xperience :4-clap:

elieforpp said:

I dont know why some people cant understand, that my acer was about to end in trash....but right now I'm typing on it )
and yes, I paid a lot of money to get it fixed and the problem still came back...pamook, you're the man ray:

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elieforpp,

Your decision was to go ahead and perform this procedure. That is your choice, it is your laptop. I am very happy that the procedure worked for you.

But here is the problem.

elieforpp said:

PS: dont listen to night_shift...if you have this kind of problem, go for it :wink:

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Your issue may not be someone elses issue. Each and every computer issue can be caused by many different things. This is where the troubleshooting comes in. If the diagnosis comes back that there is an issue that this thread will help solve, we will present this as one of the options, but with the warning that this may cause damage.

Please do not recommend that other posters disregard our techs and perform this procedure without consultation.

Thank you,
-GZ