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对于学过彩电原理与维修的人来说都知道行扫描电路的重要性,行扫描电路的故障占总故障的50％以上,行扫描电路包括:行AFC、行振荡、行推动、行输出、高压形成、行锯齿波比较电路等。当行扫描任一电路出了故障时,都可能产生行电流增大,而行电流增大可能造成烧坏扫描集成电路、行管、行输出变压器,甚至显像管、偏转线圈等故障。初学者甚至不敢再检修下
For color TV theory and maintenance of people who know the importance of line scan circuit, line scan circuit failure accounted for more than 50% of the total fault line scan circuit includes: line AFC line oscillation, the line to promote the line output, High-voltage formation, the line sawtooth wave comparison circuit. When any circuit in a row is faulty, the line current may increase, and the increase of the line current may cause the burnout of the integrated circuit, the line tube, the line output transformer, and even the picture tube and the deflection coil. Beginners even afraid to check again