Usually between -6V and -15V . This turns the pixels OFF.
You can find original replacement boards at retailers like Great Bharat Spares to ensure compatibility and original display quality. y320an01s4lv06 circuit diagram pdf new
If the input 12V is present but VGH/VGL are missing, the DC-DC IC may be damaged or a ceramic capacitor on the gate line may be shorted. Usually between -6V and -15V
Start by testing the SMD fuse near the LVDS connector for continuity. If blown, check for shorts in the ceramic capacitors (MLCC). y320an01s4lv06 circuit diagram pdf new