iPad air lỗi cảm biến ánh sáng
step 1: measure the resistance of mark sockets, if lost any line -> track to line and lifting.
step 2: measure 2 sides of wires (yellow frame), if 1 side has, and 1 side hasn’t -> short lifting.
step 3: measure voltage 3v line, if shorting -> isolate wire (Orange frame), if it work -> use zxw tracking to wire (Orange frame) and keep isolate.
step 4: take a look at 2 resistances here, it just error when rotten by water.
Note: most of them just broke the wires (yellow frame). Voltage 3v wasn’t shorting, but weak -> replace this source.
step 2: measure 2 sides of wires (yellow frame), if 1 side has, and 1 side hasn’t -> short lifting.
step 3: measure voltage 3v line, if shorting -> isolate wire (Orange frame), if it work -> use zxw tracking to wire (Orange frame) and keep isolate.
step 4: take a look at 2 resistances here, it just error when rotten by water.
Note: most of them just broke the wires (yellow frame). Voltage 3v wasn’t shorting, but weak -> replace this source.