After careful observation, found near anode high-voltage protection diode ZD752 and crossed the line with green rust surface and circuit boards also have traces of chemicals, and the reverse side printed circuit near ZD752 and C755 have black tin plating, apply the copper wire has been corrosion, especially C755 is worse. Remove the C755, found that the circuit board has been C755 oozy liquid corrosion discoloration. C755 is anode high-voltage protection filter capacitance, the stain of the front side of cleaning circuit board, and replace a 100 mu 50 v/F electrolytic after boot, color TV work.yABservice manual download site