Hi Danii, there goes the Service Mode: SEQUENCE TO SERVICE MODE CHASSIS 3Y03 (CHINESE TELEVISION) 1. Turn on the TV 2.Press the MENU key 3.On the remote press the Q.VIEW (Quick View) key (It is located above a green key called "language") (In other models it is called "recall") 4. Press the MUTE key 5. It is already in service mode: 5.1. With the TIMER key on the remote, you change the page * The Timer key has the symbol of an analog clock and is on the right side of the "9" key 5.2. Use the PROG + and PROG- keys to change the parameter. 5.3. Use the VOL + and VOL- keys to set the parameter 6. Make the corresponding adjustments according to the fault, the service manual and your experience. 7. Press the MENU key to exit the service mode and with this the new parameters will be saved. [b] There are the parameters according to the Service Manual. [/B]Parametros Service Mode Chassis 3Y03.docx [19.47kb]