21: Q: No video signal after power-output?
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21: Q: No video signal after power-output?

21: Q: No video signal after power-output?

1970-01-01

A:  First check the external power supply polarity is correct voltage is to meet the requirements, and for DC12V AC24V, should work% range, for AC220V, to be in the range of 185V ~ 265V.

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