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how to replace 4 leg ic chip for lap top?
10-31-2012, 04:07 AM
Post: #1
how to replace 4 leg ic chip for lap top?
Howdy, I've got a acer aspire 7736z, anyone that knows these lap tops knows that some of them short out and no longer have power. The fix for this is replacing the u58 IC chip. I have looked into all other options so this is the problem I'm fixing. What I need to know is, How do you replace it? I'm not sure the heat that the motherboard can take, or the best way to solder it on. There are guides to 16 leg and over replacement, but this is just a small guy, how can I get this done at home easily and effectively? Step by Step would be nice, photos or video even better!

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10-31-2012, 04:15 AM
Post: #2
 
Step one.. Blow up some balloons.
Step two... put on a nice think woolly jumper.
rub the balloons against your jumper, make sure you have your shoes on.

You're ready to begin.

place the laptop on the floor. Using your whole body weight, drop your right knee down through the screen. the outer case should now come off easily. Using a blowtorch, lightly de-solder as many pins as you can find, it doesn't matter which ones really, as it's pretty f*cked already. you know you've done it right when the bottom of the motherboard is charred and black, it's also helpful at this point to snap a few pieces off to lighten it up a bit. we call it an upgrade.

now you'll need some water and flour.
BEFORE YOU CONTINUE...

Water is good for pc components, mixed in thoroughly with flour, it creates a cheap thermal paste that should be coated all over the components, as much as you can.

using a Hacksaw, file, nails and a hammer, re-assemble the laptop.

Then phone Acer on 0871 760 1000, tell them it's broken and you don't know why, and that they'd better come fix it or else. Leave it outside to be collected, and dry off a bit.

Here's a photo, i hope this helps.

http://www.brokenlaptopservice.com/gifs/...orking.jpg
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10-31-2012, 04:15 AM
Post: #3
 
I did a quick search for 7736z u58 and I found out that it is a SI4812BDY MOSFET, not a IC and it is 8 pins not 4. You need to be able to do surface mount soldering, not easy. I think you should get an expert to do it.
http://www.fixya.com/support/t9604207-ac...utting_off
http://www.digikey.com/product-detail/en...ND/2441977

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