valinskaya 0 Posted October 1, 2010 Hello to all, Is there anyone in this world who have tried to repair KPD dvr with no image to monitor exit? I am looking for schematic diagram the KPD616, can anyone help me ? Share this post Link to post Share on other sites
scorpion 0 Posted October 3, 2010 There are no schematics available for any AVTech DVR. Do you have a rework station and can you remove these chips on your own. If yes then you can look up the chip numbers and see which ones are for video. I have studied an old IDE 4 channel DVR from several years ago, but the economy does not allow me the free time to study other DVRs. Here is the chip for that particular DVR. U22 HEF4051B Main Monitor 8 Channel Analog Multiplexer/Demultiplexer The HEF4051B is an 8-channel analog multiplexer/demultiplexer with three address inputs (A0 to A2), an active LOW enable input (E), eight independent inputs/outputs (Y0 to Y7) and a common input/output (Z). U16 is the same chip for the call monitor Share this post Link to post Share on other sites
