According to the fault phenomenon analysis, first check the pillow school circuit. Used the machine pincushion correction circuit to Toshiba company production of deflection distortion correction circuit ta8859p as the core controller, but also by the CPU{30}, {31} foot sda2, scl2 control, to realize the image field amplitude, center field, linear, the line width, center, and S correction distortion correction, also produce field frequency sawtooth wave signal to drive the field output circuit, and compensate the bundle current of a display tube due to changes of amplitude changes. The machine is set up in the "CHK4" maintenance adjustment state, and the volume + and key of the remote control is adjusted, and the image line amplitude and left and right pillow distortion are all without any change.. After shutdown online measurement field parabolic wave stage amplifying circuit R765, Q701 components were normal, the detection IC701 the pin voltage and found 2 pin voltage is 0. 3V (normal value is about 0. 6V), down 2 feet of line detection on the left is shown to be related to components, found c707 (0. 047 mu F/50V) corrupted leakage. After the new capacitor is changed, the function is set up in the CHK4 maintenance adjustment state, the amplitude and the parameters of the left and right parabolic wave are carefully adjusted, the image distortion is eliminated and the image distortion is eliminated..