Well I guess that's the last time I do a Craigslist deal. Any ideas on how to fix? Video tells the tale. 

http://www.youtube.com/watch?v=IVdsuXGn4oQ


Comments (Page 2)
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on Jun 14, 2011

A friend's desktop PC exhibited the exact same symptoms.

It was the Cmos battery....dead as a doornail.

A $1 fix.....

on Jun 14, 2011

OK I checked out the CMOS battery. It is secure in it's holder. No broken parts. I even tried holding it down while trying to boot yet I get the same result. On then off. On then off. Guess I will donate it to the parts bin.

@DC - I already called the cops about this and there is nothing they can do. They said it is a civil matter for the courts.

on Jun 14, 2011

on Jun 14, 2011

kona0197
OK I checked out the CMOS battery. It is secure in it's holder. No broken parts.

But does the battery have a charge, my need a new one...

on Jun 14, 2011

I would assume it has a charge as it did start up and run Windows the first time I used it when I got it. I was even able to get into BIOS that day. I didn't change any BIOS settings. Then I booted into Windows again, it shutdown while trying to access the hard drive for something, and now exhibits this behavior.

on Jun 14, 2011

Replace the battery. Most take the same one as 90% of the automobile keyless remotes.

on Jun 14, 2011

Or just sit around and argue about the $1. Sheesh.

on Jun 14, 2011

One problem. The battery is soldered to the motherboard on the bottom. Will not come out.

on Jun 14, 2011

Batteries are never soldered onto a mother board... therefore it's not a battery.

If on the other hand it's a corroded battery: It's a definite "buh bye".

on Jun 14, 2011

Well the top is giving me issues as well. In the picture see that silver part? It will not come off the battery. Thinking I will take it in to a PC shop.

on Jun 14, 2011

Doesn't look like corrosion. Could it be lock-tite? Or perhaps that battery's been compromised. The white maybe the electrolyte in the battery leaking out. Try using a small plastic or composite screwdriver and gently go under that clip. See if you can work it loose.

on Jun 14, 2011

http://www.techsupportforum.com/forums/f210/acer-aspire-7520-repeats-going-and-off-343165-2.html 

Re: Acer Aspire 7520 repeats going and off.

I have been recently handed one of these laptops for repair and I can confirm that the fault that I have here is that upon pressing the power button the firstly the processor fan spins up and after a couple of seconds it stops. The power light goes out and then the cycle continues without the processor fan spinning up, the only way to stop this is by removal of the battery and external power.

I have located the problem and in this particular case it is a design fault. The NVidia GPU is not mounted well and requires removal, reballing and resoldering to the motherboard. This fault is exactly the same as the problem that was experienced with the XBox 360 and is a genuine manufacturing flaw.

The oven trick may work but please dont actually put the whole laptop in the oven, you may end up with quite a mess, totally strip down the laptop and only put the motherboard in the oven. Personally I would not recommend this technique as you may end up causing irrepairable damage to something that could be repaired in a very sensible and more relyable way.

This afternoon I am going to attempt to get Acer to resolve this issue as I can see that there are many forums concerning faults with this model of acer laptop that uses the NVidia GPU.
on Jun 14, 2011

According to that thread the only 'layman' solution is to cook the MB in an oven...it's a dry joint issue, it seems.

It'd be curious to know how many people tried and fried .... but seems several got it fixed....

on Jun 14, 2011

Well I will let someone else deal with "cooking" it. Saving up money to buy a new one while borrowing one from a family member for school. Thank you Jafo.

on Jun 15, 2011

the only 'layman' solution is to cook the MB in an oven...

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