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Will the 3v battery cause my screen to go blank on my cctv cnm H264 4 channel if it needs replacing

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No the 3Volt battery is a CMOS battery for keeping data and setting.

example: Boot sequence, time, password ect.

Posted on Apr 09, 2014

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Production of this tester has been discontinued by the manufacturer.

I read a review of this tester, and that person cautioned on the tool's short battery life. He said you need to use high capacity NiMH batteries. He says he's lucky to get an hour of life out of a freshly charged set. Furthermore, the tool does not like to even power up if there is less than a 3/4 charge left of the batteries. He recommended removing the batteries when done using the tool and placing them in a smart charger until needed again. ALL NiMH batteries self discharge even when not in use. You should always have and install freshly charged batteries when you need to use the tool.

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Hi.. I have Rapport 337, I got problem screen on it, the screen is blank like no power but other functions work normally. I don't have idea why the blank screen occur because two days before we...


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