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采用P-24系列集成电路的电视机,若行同步正常,图象上下滚动,场同步破坏,这时如果测得KC581集成电路的第2脚比额定的7V电压小得很多,有时仅为3V左右,一般为KC581的同步放大部分损坏,应更换集成电路,这种现象国产DO581损坏较多。此时若手头一时无集成块,可用如图所示的方法应急修理:将连接2脚的330Ω电阻断开,在1μ电容前与定时电路的输入端14脚接0.022～
P-24 series integrated circuits using the TV, if the line synchronization is normal, the image rolling up and down, field synchronization destruction, then measured if the second leg KC581 integrated circuit than the rated 7V voltage is much smaller, sometimes only 3V Or so, generally KC581 synchronous amplification part of the damage, should be replaced by integrated circuits, this phenomenon more domestic DO581 damage. At this point if the time without a block, can be used as shown in the emergency repair method: Connect the 2 foot 330Ω resistor is disconnected before the 1μ capacitor with the timing circuit input 14 feet 0.022 ~