Here is an example of Toshiba Satellite M35X power jack.
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.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.
If the trace inside the hole is broken you still can fix it.You can run a wire to connect the top and the bottom sides. Update: Here’s another solution to fix the power jack problem, it shows how to relocate the power jack outside the laptop base.