Hi, my Samsung Galaxy S3 shut down automatically recently. Sent to Samsung service centre and they said it's my motherboard problem. Since my phone is not under warranty covered now, is there anyway that you can fix the problem?

Searched on the other site and seems like quite a number of people got the same problem too. They said it's the firmware bug but not the hardware problem.

Is there anyway you can fix the problem? Would be much appreciated for your help..

I had tried replacing new battery and seems like the problem is still there. Samsung asked me to change main board to recover the problem. How much do you charge for replacing the main board?