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Try: monitor's power ON and OFF. Access the OSD menu. Return to previous OSD level. Change display format. Adjust the OSD menu. Change the signal input source. SmartImage Lite. There are three modes to be selected: Standard, Internet and Game. Model 227E3QPH: 5 62 4 3 7 - See the user manual.
simply long press input and power touch buttons to reset the ic program and it will be ok be sure to wait 5-10 seconds note: be sure the led has display input and powered on with the problem your encounting thanks ok