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松下NV-M9000攝錄機開啟電源，裝入防誤抹擋片完好的錄像帶，無加

發布日期：2022-04-27 點擊率：146 品牌：松下_Panasonic

        分析可能防誤抹開關接觸不良。拆下機殼，用三用表測該開關引出線對機心金屬件間電阻，裝入防誤抹擋片完好的磁帶或用手按壓開關，電阻值均為無窮大。卸下防誤抹開關，發現簧片均已氧化變黑，用砂紙打磨干凈保證接觸良好，裝機后故障排除。

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