Chosen Solution
I tried to charge my battery of my nexus s from another local charger. . . but it made my phone dead. when i check supply pins of phone when positive and negative of battery comes in contact with device’s pin with my external power supply and power it on. . it doesn’t power on. . I took my cellphone to repairers to get it checked. they told me it’s problem of power ic I myself is a electronics engineer. so please guide me it is exact problem of power ic or something else. . Hope, my post will be seriously taken into consideration.
If your power IC is dead then you’d have to either replace the entire board or become a robot and solder on a new one. HOWEVER, try this: take out your battery, put it back in, hold both volume down+volume up and plug in a USB cable. If your phone boots into download mode then all is not lost! Here is a new motherboard if you’re intent on fixing this phone (provided it is a Sprint Nexus S), or swappa has a phenomenal array of smartphones for cheap. Cheers, tabormeister
chake this https://www.facebook.com/pages/Dead-sams…
same happened with my phone i did what you said not working