HomeAsked questionsCâu hỏi thường gặpQRemote Control not working (screen not displayed)? ACheck the batteryWhen replacing a new battery, the display still does not appear, so check to see if the battery box has acidic water flowing out of the battery, damaging the contact area at the two ends of the battery. QRemote Control not working (screen not displayed)? ACheck the batteryWhen replacing a new battery, the display still does not appear, so check to see if the battery box has acidic water flowing out of the battery, damaging the contact area at the two ends of the battery.