Check the power supply normal, line output circuit and deflection coil is normal. Suspected fault out in the I2C bus data control circuit.
Connect power, enter the I2C bus data adjust state, the screen appears industry mode CHK1-CHK2-CHK3-CHK4. Pressing the remote control on the "1", "2" button, select project adjustment, make the TV into the way of the project CHK4, pressing the remote control "3", "4" key, adjust the horizontal width of H-WIDTH. The value is 0 to 63, press the volume positive or negative key, the image horizontal amplitude change, when numerical adjustment to 40 amplitude recovered normal. Finally, press the remote shutdown button, to adjust the exit state. Try machine, the image level of the recovery is normal, troubleshooting.