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HPs2021a 有时屏幕不停闪烁后黑屏

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Post time: 2017-8-30 20:47:24
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 HPs2021a 屏幕有时不停闪烁后黑屏,有时显红、绿、蓝东三色交替画面,电源指示灯正常,但按开关机键无反应。更换电源部分电容故障未能排除,驱动板重刷程序也不能修好,最后检测后是灯管有打火,更换灯管后故障排除。
原来是灯管高压电路打火,引起驱动板死机,走了不少弯路。

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Post time: 2017-11-20 08:52:35
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嗯!判断闪烁的话,先软件后硬件!电容未怀孕,果断断开高压板,测试灯管。。。。。。。。。会比较快!
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Post time: 2020-1-12 14:53:18
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Thanks for sharing
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