Chosen Solution
Okay… so i had a m4 aqua with no screen output, but it responds(let’s refer as first phone). Recently i got a cheap m4 aqua that only needed to swap the battery so i did it and it worked for some time( let’s refer as phone 2). I don’t know why the phone 2 is not turning on anymore(something with power delivery i’m guessing). Now that i opened both phones to check differences i saw that there are some parts missing from the first phone that are on second(pics attached) maybe it’s possible to somehow combine 2 into 1 and make 1 functional phone?
on phone 1 there is one missing LCD Filter part, you dont need to take component on phone two and resolder it on phone one. just do the jumper to makes LCD on phone 1 works again.. i hope this helps
I have also same problem.. After pressing the power key.. Sony logo come then release the power key.. Mobile get shut down
