Checkifvoltage of screen F1andF2is3.3V. Check if voltage of 34 pin of UPD16311is-24V. Check groundednegativevoltage of screen F1 and F2. Replace UPD16311.
Yes Check if connectioncordbetweenscreen and mainboard is broken? Check if UPD16311pinisconnected. Check if pin of screen is connected.
