No sign of life after battery replacement
Hello ,
I have an Surface Pro 4 , i bought the device with the battery allready swollen , so the display was a little bit peeleed off , but was working normal and perfect.
I succeded to unstick the display , tried after that to power the unit , worked perfect.
Replaced the battery with an second hand one , that from what i head from the pervious owner , the battery stayed for 1 year or more , so probably is empty.
After i reattach the battery , no sign of life from the unit. I tried with battery removed same no sign. After that i had read that need to isolate the battery pins from the mainboard , tried even like that , nothing.
I had checkd , the diodes , all are fine , the 0ohm resistor is ok , even i have 3.3V on the IC.
What else to check ? Could be the battery problem ? The ideea is , i don't want to spend other money on a new battery to see that will be the same , without life ;)
All the answer are appreciated. Thank you
Is this a good question?
I bought another board with battery , in hope to solve my problem. Same :( No life. And battery have almost 7v on it .... What can i try else ?
by Brudasca Alexandru
Oh geez. Only 2 answers I can come up with is 1, dirty charging contacts, and/or 2, bad battery board. If not those, try replacing both at the same time, maybe the board killed the battery then the battery killed the board.
by Anchevauls Walker
2 board , 2 charging ports .... Battery is ok , beacuse i measure it and its ok. but probably both boards have the same problem ....
by Brudasca Alexandru
Do you have a heat gun? If so, remove the battery and heat up the area near the processor and protection circuit, making sure it doesn't get too hot. This will reflow the solder. Also, after that, if it still doesn't work, if you have a flir camera, check near the protection circuit and processor, and see if it gets hot, after it cools, of course.
by Anchevauls Walker
Heat gun i have even heat station , what i don't have is a thermal camera. Could you indicate on a picture wher is that protection circuit ?
by Brudasca Alexandru
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