What will you do if your Toshiba Satellite A75 shuts down without warning when it loses power? Follow me, I’ll show you how to make it:
Of couse, you can try wiggling the plug of the laptop, because the power plug kept not making contact somehow and ultimately the laptop would shut down.
If it does not work, you should use other ways. Open the laptop. You will find the barrel power socket on the back of the unit is soldered into the motherboard, and it may have been loose and pulled away from the solder. It often happens over the course of normal use, and people trip over the power cord from time to time adding to the stress of the almost non-existent solder. In that case, just re-solder the damaged connection, and beef up all of the other three solder points on the motherboard as well to try to strengthen the contacts against failure in the future.
Here is a picture so you can look very closely at pin , the solder and the circuit board.
Besides, this guide is also applicable to Toshiba Satellite 1900,Toshiba Satellite M30X , Toshiba Satellite M35X and Toshiba Satellite A 70.