In some cases the connection is good, but the DC jack is bad itself. UPDATE: Sometimes, after you replace the jack, you can see that the system board doesn’t get power at all.
You can find a new DC jack for Toshiba Satellite M35X and Toshiba Satellite A70/A75 laptops on e Bay. The battery will not charge and the power LED will not light when you plug in the AC adapter. When a connection between the positive pin and the motherboard breaks (cracks), the power jack gets loose. A loose power jack can damage the trace inside the hole in the system board. As you see, the positive pin goes through the hole in the system board and you solder it on the top side. What if the trace between the top side and the bottom side is broken somewhere inside the hole? In this case everything looks nice and clean on the top side.
Take a closer look at the power jack on the system board with a magnifying glass.
In most cases you get the power problem because of a bad connection between the DC jack and the system board, you’ll see a crack between the DC jack connector and the system board.
If it’s still under warranty, it would be fixed at no charge to you.
To fix the problem, you have to take your laptop apart, remove the system board to resoleder or replace the DC-IN jack.
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Removing the motherboard from Satellite A70/A75 laptop is a good idea because the jack itself might has a broken “ ” pin, as it shown on the picture below.A bad connection between DC-IN power jack on the system board and the system board is a very common problem with Toshiba Satellite M35X and Toshiba Satellite A70/A75 notebooks.If your laptop is out of warranty, then you can fix the problem by resoldering DC-IN jack on the system board.For more information visit our Intel AMI BIOS ID information page.At this moment we have 2 Intel AMI BIOS IDs listed for Toshiba.
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