iPad Air 2 không lên màn hình
step 1: take a look and measure the resistance of socket. Base of socket already gone look like this -> replace another socket.
step 2: data line from CPU cross capacitor (orange frame), then to socket, so cannot measure resistance of socket as well. Measure clear circuit to line and measure the resistance CPU at bottom of capacitor (orange frame), capacitor can lifting to test, it should be replace.
step 3: measure 2 sides of wire (yellow frame), if broke or increased resistance -> take off to short lifting or replace.
step 4: the Resistances (green frame) just take a little look when error. It just error when pilling off or drop in water.
step 5: Check screen supply voltage line to red line, broke -> lifting the wire (yellow frame); lost voltage -> replace supply voltage IC.
purple text: If shorting -> isolate and remove the capacitors (purple frame)
Note: Ipad Air 2 rarely error at screen by main. It just happen when open screen and made lose base socket by our action. Open screen without turn off phone made the light doesn’t bright or the screen shorting main when we glue the screen. Data lines hadn’t found error. Sometime, It drop in water tend to burn the wire of screen supply voltage.
step 2: data line from CPU cross capacitor (orange frame), then to socket, so cannot measure resistance of socket as well. Measure clear circuit to line and measure the resistance CPU at bottom of capacitor (orange frame), capacitor can lifting to test, it should be replace.
step 3: measure 2 sides of wire (yellow frame), if broke or increased resistance -> take off to short lifting or replace.
step 4: the Resistances (green frame) just take a little look when error. It just error when pilling off or drop in water.
step 5: Check screen supply voltage line to red line, broke -> lifting the wire (yellow frame); lost voltage -> replace supply voltage IC.
purple text: If shorting -> isolate and remove the capacitors (purple frame)
Note: Ipad Air 2 rarely error at screen by main. It just happen when open screen and made lose base socket by our action. Open screen without turn off phone made the light doesn’t bright or the screen shorting main when we glue the screen. Data lines hadn’t found error. Sometime, It drop in water tend to burn the wire of screen supply voltage.