Good evening to everyone. I have a problem with this laptop.
I entered the laboratory with the defect of the graphics card that was not activated (error code 10).
With integrated intel graphics everything is ok.
I change the hard disk, reinstall the operating system but the ati still did not work.
We decide with the customer to replace the bga ati (216-0846009).
Soldered new bga ati but the defect of the black screen appears, I try to replace the ram but nothing to do, the laptop remains on but black screen.
I decide to remove the core vga by unsoldering the coil that feeds the bga ati but begins to present a strange flaw, the laptop after the power on turns off after 5 seconds. I noticed that the CPU becomes very hot. I try to remove the bga ati but the defect remains. I checked the coils that powered the cpu_core is I find a voltage of 1.70v in the 3 coils (l8001, l8002, l8003). I make a measurement in ohms and I find a resistance of 0.3 ohms on the coils. When the laptop turns on, the coils heat a lot.
Now I believe that the cpu is shorted even if I can not explain how.
I tried to seller the old bga ati but nothing to do. Now I have solder new bga ati but the defect remains, turns off after 5 sec is the cpu and the coils become very hot.
Any help please?
Merry Christmas to everyone
I entered the laboratory with the defect of the graphics card that was not activated (error code 10).
With integrated intel graphics everything is ok.
I change the hard disk, reinstall the operating system but the ati still did not work.
We decide with the customer to replace the bga ati (216-0846009).
Soldered new bga ati but the defect of the black screen appears, I try to replace the ram but nothing to do, the laptop remains on but black screen.
I decide to remove the core vga by unsoldering the coil that feeds the bga ati but begins to present a strange flaw, the laptop after the power on turns off after 5 seconds. I noticed that the CPU becomes very hot. I try to remove the bga ati but the defect remains. I checked the coils that powered the cpu_core is I find a voltage of 1.70v in the 3 coils (l8001, l8002, l8003). I make a measurement in ohms and I find a resistance of 0.3 ohms on the coils. When the laptop turns on, the coils heat a lot.
Now I believe that the cpu is shorted even if I can not explain how.
I tried to seller the old bga ati but nothing to do. Now I have solder new bga ati but the defect remains, turns off after 5 sec is the cpu and the coils become very hot.
Any help please?
Merry Christmas to everyone
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