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接修一台康佳T4934E4型彩电,无图、无声,水平一条亮线。经查是+24V供电限流电阻R446(4.7Ω/1W)烧断和场输出块N401(LA7830)损坏,换上电阻和“场块”在路检查没有发现其他异常,通电收看一切正常,交付使用。一个多月后该机又送修,机主说头天晚上看还好好的,早上一打开仅指示灯亮,
Take a Konka T4934E4 color TV, no picture, silent, a bright line. Checked Yes + 24V Supply Current Limiting Resistor R446 (4.7Ω / 1W) Burnout and Field Output Block N401 (LA7830) Damaged, Put on Resistance and “Field Blocks” No Other Abnormalities Found During Road Check, Power Up Watch Everything Works, Delivered use. More than a month after the aircraft and repair, the owner said the night still good, opened in the morning only the light is on,