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Weird Sony Lpatop Issue

post #1 of 7
Thread Starter 
VGN-NR220E is the model. What happens is it boots fine, but if i knock on the bottom right side of the laptop on the palm rest... it freezes up and i get some black lines across the screen. It also happens any time during the boot if i were to do that. So i am positive its a hardware issue. It has an inlet 945 express graphics chip. I did try and reflow it but it has not fixed it, maybe i will attempt again if i don't have any other good ideas.

Sometime the laptop will power on with no video output... i can hear the hdd spin.

The computer if you dont move it it works fine. Only when you shake it or knock on it a bit not tooo had it freezes up. It's like a bad connection somewhere.


Little History:
The laptop has something spilled on it and the DC jack was broken. I fixed that and cleaned it up. The spill has only affected the keyboard didn't see any residue on the motherboard it self.

It outputs to external monitor fine as well.

I used 5 quarters and a nickel for the reflow.


Any support would be helpful.
post #2 of 7
Thread Starter 
ok so i fixed i guess reflow and one of the ram slots was bad.
post #3 of 7
Too high of a temp in the oven eh? Nice to hear that you got it sorted out.

cheers ...
post #4 of 7
Quote:
Originally Posted by infowire View Post
VGN-NR220E is the model. What happens is it boots fine, but if i knock on the bottom right side of the laptop on the palm rest... it freezes up and i get some black lines across the screen. It also happens any time during the boot if i were to do that. So i am positive its a hardware issue. It has an inlet 945 express graphics chip. I did try and reflow it but it has not fixed it, maybe i will attempt again if i don't have any other good ideas.

Sometime the laptop will power on with no video output... i can hear the hdd spin.

The computer if you dont move it it works fine. Only when you shake it or knock on it a bit not tooo had it freezes up. It's like a bad connection somewhere.


Little History:
The laptop has something spilled on it and the DC jack was broken. I fixed that and cleaned it up. The spill has only affected the keyboard didn't see any residue on the motherboard it self.

It outputs to external monitor fine as well.

I used 5 quarters and a nickel for the reflow.


Any support would be helpful.
hi infowire,
I am new to this forum and i have the same problem with my vaio VGN-SZ7AWN. It think it uses the same chip set.
How did you figure out whats wrong? What is reflow?
Thanks for any information and help
post #5 of 7
Reflow ...
"Reflow soldering is the most common method of attaching surface mount components to a circuit board. The goal of the reflow process is to melt the solder and heat the adjoining surfaces, without overheating and damaging the electrical components. In the conventional reflow soldering process, there are usually four stages, called "zones", each having a distinct thermal profile: preheat, thermal soak (often shortened to just soak), reflow, and cooling."

I call it "baking" - charlatan process of my part. Others have real equipment for the reflow.

cheers ...
post #6 of 7
Quote:
Originally Posted by qhn View Post
Reflow ...
"Reflow soldering is the most common method of attaching surface mount components to a circuit board. The goal of the reflow process is to melt the solder and heat the adjoining surfaces, without overheating and damaging the electrical components. In the conventional reflow soldering process, there are usually four stages, called "zones", each having a distinct thermal profile: preheat, thermal soak (often shortened to just soak), reflow, and cooling."

I call it "baking" - charlatan process of my part. Others have real equipment for the reflow.

cheers ...
hi qhn!
Thnak you for you quick infomation. Do you think that reflow will solve my problem? Is it possible to do the reflow process on the mothboard? What do I need to do reflow.
Or should i buy a motherbord (a new one is very expansive)?
Thank you for your help.
Johann
post #7 of 7
Hi Johann, you have nothing to lose at this stage, so I suggest go with baking the motherboard. Search the forum ("bake", "baking") here for tips and personal inputs from our NBF crazy-bakers

It has a good chance of success.

cheers ...
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