Usually this kind of situation is caused by cable, but check the cable found normal. Considering the brightness of the image processing and artificial intelligence AI circuit, so the AI first check circuit. xKXservice manual download site
DG6 IC4038 measuring the voltage of each foot is normal, test voltage is normal, the foot of DG3 5 feet voltage is not normal. xKXservice manual download site
Through inspection found R4065 bad, change after troubleshooting. xKXservice manual download site
AI AI circuit in addition to the noise reduction effect, is also responsible for the processing of brightness, maintenance should be paid attention to.xKXservice manual download site