 Posted: Tue Apr 13, 2010 1:05 am Post subject: SOLUTION |
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| OK. Its an adm turion laptop with a sis chipset. There is nothing wrong with the motherboard. The problem is in the chipset. The flashes mean that some of the solder balls under the sis chipset is damaged. The solution is very simple. If you have a hot air gun or a simle home hair dryer you can fix it.
first take the laptop apart all the way to the bare motherboard. locate the main chipset. take a piece of aluminium tin foil and wrap the motherboard - it helps dispence the heat. take a knife and cut out the tin foil in a square where the chipset is located. take the hair dryer or if you have a hot air gun set it to 330 degrees celzius and air flow to 5. heat the chipset for about 3 minutes making slow passes over the chipset. do not hold the air gun on one place long because you will damage the chipset. after heating it let it air cool for about 10-15 minutes. Plug everything back in and turn on the laptop. it should work just fine. if you get the same problem again repeat the procedure. For better thermal conductivity be sure to apply thermal paste on the cpu the main chipset and the vga chipset. THIS IS A RULE FOR ALMOST ALL LAPTOPS THAT HAVE A AMD TURION CPU, SIS CHIPSET AND AN NVIDIA VGA. IF YOUR LAPTOP TURNS ON BUT THERE IS NO PICTURE THIS IS ALSO THE SOLUTION ONLY APPLIED TO THE VGA CHIPSET - NVIDIA OR ATI OR SIS. HOPE THIS HELPS. CHEERS |
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| Posted: Fri Jan 30, 2009 4:34 am Post subject: |
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| [quote=" i have no idea[/quote]
yes, thats obvious |
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| Posted: Fri Jan 30, 2009 4:19 am Post subject: |
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i have tested areas with a multimeter and it seems to be getting power everywhere, 3.3v, 5v and 18v at various places on the board, capacitors all look fine, so my guess is bad power ic, voltage regulator or sm fuse somewhere  i have no idea |
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| Posted: Fri Jan 30, 2009 3:34 am Post subject: |
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| Even if the service manual was available, it wouldn't include the schematic.
No laptop manuals include schematics, at least none that I've seen. HtH [email protected] |
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| Posted: Fri Jan 30, 2009 1:38 am Post subject: |
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| anyone know where i can get a free schematic of the board? | |
| Posted: Wed Jan 28, 2009 10:23 pm Post subject: |
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| everything is removed from it except the cpu | |
| Posted: Wed Jan 28, 2009 10:18 pm Post subject: |
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| Remove the memory and see whether it beeps RAM error code | |
| Posted: Wed Jan 28, 2009 9:49 pm Post subject: |
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same i press the power button and the battery light flashes about 8 times, and that is all it will do, i notice as soon as i press the power button ethernet lights light up for a second and then the battery light flashes, so i am thinking something on the board is not getting power that should be or a component is bad or shorted, but i cant seem to find anything  |
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| Posted: Wed Jan 28, 2009 8:59 pm Post subject: |
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| How about with NO battery, just AC adaptor? | |
| Posted: Wed Jan 28, 2009 7:23 pm Post subject: |
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| anyone know how to test the voltage regulators on the board with a multimeter? | |