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(Topic ID: 289677)

BK2K System 11 power supply no 12vdc

By ArnieC

3 years ago



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  • Latest reply 3 years ago by G-P-E
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    #1 3 years ago
    OP
     
    ARN

    ArnieC

    Pinside+ Frequent

    US Lincoln, NE

    11y 54,050 436 15

    67FD3F71-752D-4EC9-BB14-272DC7AAA40A (resized).jpeg67FD3F71-752D-4EC9-BB14-272DC7AAA40A (resized).jpeg234F3F31-0AA5-4D95-A8E7-171E7F41A61F (resized).jpeg234F3F31-0AA5-4D95-A8E7-171E7F41A61F (resized).jpeg67FD3F71-752D-4EC9-BB14-272DC7AAA40A (resized).jpeg67FD3F71-752D-4EC9-BB14-272DC7AAA40A (resized).jpegI can not figure out why my 12volt is running about 9volt on my system 11 power supply for my Black Knight 2k. I replaced all the capacitors, I put in a new 2n2059 transistor. I know it is the power supply as I plugged in a working power supply and the voltages correct on it. I have 13.89vdc at D1 and D5. What I don’t have is continuity between the + leg of the bridge rectifier and D1 and D5 that is there on the working board. I replaced the bridge rectifier as well

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    #5 3 years ago
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    ArnieC

    Pinside+ Frequent

    US Lincoln, NE

    11y 54,050 436 15

    I do not remember where I got the 2n2059. I think Jameco I have some of the NTE equivalents I can try. I will report back

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