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一台3GC-4703型如意牌彩电出现杂乱无章的图象,荧屏上光栅图象急速闪烁、有几条大颗粒闪光线,伴音嗡嗡不清,并能听到持续的“吱吱”放电声。起初判断为行输出对地(包括磁心及周围元器件)放电打火,或高压帽周围打火,开机后发现高压帽接触良好,行输出周围未发现击穿点。经清洁
A 3GC-4703 type wishful brand TV appear disorganized image, the screen raster image flashing rapidly, there are several large particle flash line, sound buzzing, and can hear the continuous “creak” discharge sound. Initially determine the line output to the ground (including the core and surrounding components) discharge ignition, or ignition around the high-pressure cap, boot and found high-pressure cap good contact, the output is not found around the breakdown point. Clean