iPad air lỗi cảm ứng màn hình
step 1: With devices were freeze some lines -> measure on socket and use zxw to check which IC sensor wasn’t have resistance -> close it or replace.
step 2: with devices were fully freeze -> measure voltage 1v8 here, if doesn’t have -> replace IC supply voltage (blue frame).
step 3: measure the capacitors (purple frame), if shorting -> isolate and remove. Capacitor (orange frame) should be replace. Take a look at resistance (green frame) drop in water or rotten 1 side ->replace.
step 4: measure here, if doesn’t have 6v -> replace to order 1,2,3.
Orange text: last way is replaced oscillation (orange frame).
Note: Most way was just replaced 2 IC sensor ->done. Haven’t seen it go deeper inside, except devices drop in water. IC of 5, 5c, 5s can be use for each other.
step 2: with devices were fully freeze -> measure voltage 1v8 here, if doesn’t have -> replace IC supply voltage (blue frame).
step 3: measure the capacitors (purple frame), if shorting -> isolate and remove. Capacitor (orange frame) should be replace. Take a look at resistance (green frame) drop in water or rotten 1 side ->replace.
step 4: measure here, if doesn’t have 6v -> replace to order 1,2,3.
Orange text: last way is replaced oscillation (orange frame).
Note: Most way was just replaced 2 IC sensor ->done. Haven’t seen it go deeper inside, except devices drop in water. IC of 5, 5c, 5s can be use for each other.