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故障现象:一台厦华S34L彩电,在正常使用四年后,突然出现无光、无声故障。经电视机修理部修理,更换了一只三极管后,使用不到一个月又突然出现上述现像。经检查为行输出管2SD2553损坏。为稳妥起见,将行逆程电容全部更换,将损坏的“行管”更换后,使用不到一个月再次损坏。损坏过程均为在正常收看时突然出现无图、无声现象。
Symptoms: a Xoceco S34L color TV, after four years of normal use, suddenly appeared dull, silent failure. Repaired by the TV repair department, the replacement of a transistor, the use of less than a month and the sudden appearance of the above. After checking for the line output tube 2SD2553 damaged. For the sake of safety, the circuit will be replaced all the reverse capacitor, will be damaged “line tube ” after replacement, less than a month to use again damaged. Damage process are suddenly appeared in the normal watch without picture, silent phenomenon.