14" B & W CCTV Monitor

Discussion in 'General Electronics Chat' started by CROSSBOLT, Dec 9, 2008.


    Thread Starter New Member

    Dec 9, 2008
    Has anyone repaired any such animal? I have one with a DEAD power supply. I have downloaded a "typical" power supply schematic that seems to approximate this power supply. I have also learned more than I ever thought I wanted to know about the 7N60B IGBT that seems to be first in line to the rest of the supply pcb. This monitor is made in China for ADT to be used in conjunction with a Lorex VCR. neither ADT nor Lorex are any help with any info. Model HD14Q2144-A, Serial Q0305-0150B. Power supply pcb has HGF-SF33.PCB.B, 2003.02.12, SF7.320.141B. 100-240VAC, 50-60 Hz. Now you have all the hard details I have.

    I did a search for testing IGBT's with a DMM and POOF! you guys had a method! The print-out is at my elbow and will be used ASAP. I already got the xfmr off the board and it seems OK.