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笔者在检修长虹TDA机芯(TDA8361/8362)64cm(25英寸)彩电场扫描电路故障时,发现起初故障排除难度较大,后经过多例检修实践,总结出其“通病”故障的处理方法,效果甚佳,现介绍给同行。故障现象:开机图、声正常,光栅上部约占三分之一的部分出现明显且稳定的回扫线,有时还伴有轻微的上下抖动现象。处理方法:只要把场输出集成块TDA3654①脚对
When I troubleshoot the 64cm (25 inch) color TV field scanning circuit of Changhong TDA movement (TDA8361 / 8362), I found that it was difficult to initialize the troubleshooting and after many cases of overhauling practice, I summed up the handling method of its common faults. The effect is very good, are introduced to peers. Symptoms: boot picture, the sound is normal, the upper part of the grating about one-third part of the obvious and stable recovery line, and sometimes accompanied by slight jitter up and down. Approach: As long as the field output manifold TDA3654 ① feet right