What Could Be Problem?
Note Book : Toshiba A75-S206, 3 years old.

Symptoms:
1. Can not turn on with Batteries and AC Power line turned ON. Battery does not get charged. Simply plugging the adapter does not charge. Either need to hold the pin at the back of computer or press against something or turn the laptop upside down.
2.Most of the time, even if the batteries are charging, after 10-20 minutes the computer get turned off automatically as the pin of the adapter and back of the computer is get heated excessively.
3.Sometime the battery charge light starts to blink after 10-15 minutes of charging on off mode of computer.
4.Can not run only on AC power, taking out batteries.
5.One friend said – it could be problem of plugging at back and only power plug can not be replaced. Need to replace motherboard for that. Costs $690
6.Other problem could be depleted Batteries. The battery and laptop itself is almost 3 years old. Battery Cost $150.
7.One friend said it could be connection problem-mostly loose soldering.

I do not have warranty on this. Do not want to send to repair center and spend big bucks. If it could be just batteries – I will replace batteries. But if changing batteries does not work then I will loose $150. I can buy new laptops from 700.
Any expert, share your experience, advice or solution. Thanks

I had a same problem on my different model of satellite too. I spent $150 once to fix the charging problem. After about a year i started experiencing the same problem so i researched it on the web and found out that there has been a law suit filed against Toshiba for certain models for the same problem. So i simply call the nearest repair center and they repaired it for absolutely free. It looks like A70 is covered under that settlement program.
check this out:
http://www.a70m30xsettlement.com/

Hope this will help.

I meant to say A75 is covered. Mine was about 3 yrs old too. And that waranty is good until oct of this year. So betta hurry.

Im guessing its either the fan or the power connection is loose. When in doubt EXPLORE! Open up the damn thing and take a look man. Its 3 yrs old anways!
Sometimes stuff gets accumulated on the fan fins. Try to clean it up. If the power connection is loose soder it into place. If you aint got a soder iron get one from radioshak or a similar store. Costs around $15. If it doesnt help you fix your computer it will someday help you fix something worth more than $15. Make sure you dont short the live wire with the ground though. Sodering tip: secret is to use flux. Make sure you get some FLUX as well. google instructions on how to use. I hope this will help. Best of luck.