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故障现象:TCL-2928Z彩电,通电开机,屏幕中央出现一条横白亮线,显然场扫描部分工作不正常。以前多次检修曾损坏7只场输出块。
Symptom: TCL-2928Z color TV, power on, the center of the screen appears a white bright line, apparently field scanning part of the work is not normal. Previously overhaul had damaged 7 field output block.