According to the conventional first detection stage depending on the level of the supply voltage, 200V normal (such failure is final depending on the grade filter capacitor failure, resulting in power supply 180V caused by decreased). Check the final grade R, G, B three by IC351, IC352, IC353 three integrated block and the types of are tda6111q (see Figure 1), measuring the 1 pin voltage, 0V, normal value is about 3V. The route search, figure 1 N points via R387 12V, via D354 grounding. D354 shape and c1815 triode similar, the types of seems to 81A8KEO, shape is shown in Figure 2, analysis D354 is composed of a resistor and a voltage stabilizing diode component (see Figure 3). Remove D354 measuring R, a feet resistance value, the positive and negative for 200 ohms, test a, K feet resistance value, positive and negative resistance value is 0 Omega that has breakdown. The 200 resistor is connected to the R trial, A feet, 2. 7V zener diode with A, K feet, try this machine back to normal.