I have a DN81R eight camera system that's been running for 2days. Everything was fine until today. Video is no longer being displayed on Port#4 when I'm in the 1+7 or 1 modes and the area is just black WITHOUT the ANNKE logo being displayed. Video is displayed if I'm in the 3*3, 2*2 and 1+5 on Port#4.
I have rebooted and reset the system to the factor setting with the same results. How do I fix this?
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