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机型:SABA(沙巴)T51SC32C型遥控彩电故障现象:遥控器操作功能紊乱,按“节目+”键有时竟会误动作为“AV”键。检修:首先仔细检查遥控发射器键盘矩阵及其接口,未发现问题。怀疑发射集成电路SAA3004P/2内部损坏,但更换后故障依旧。询问用户得知,前一段时间遥控发射器完全失灵,经别人修过后出现此故障。查看线路板,发现455 kHz陶瓷振荡器被换过,怀
Model: SABA (Sabah) T51SC32C Remote Color TV Fault phenomenon: remote control operation disorder, press the “program +” button sometimes misoperation as “AV” button. Overhaul: First carefully check the remote transmitter keyboard matrix and its interface, did not find the problem. Suspected launch SAA3004P / 2 IC internal damage, but after the replacement of the fault remains. Ask the user to know that some time ago the remote control launcher completely failed, after someone repair this fault. Look at the board and found that the 455 kHz ceramic oscillator was switched, Huai