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    Cf-51 cmos

    Discussion in 'Panasonic' started by hawk1234, Apr 24, 2014.

  1. hawk1234

    hawk1234 Notebook Guru

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    I have a CF-51QG6EEBM that will not hold the CMOS configuration. I thought the CMOS battery was dead so I took one out of a working CF-51QG5EEBM that I knew was holding the CMOS configuration. When I tried the working CMOS battery the CMOS still lost configuration. I even tried a CMOS battery out of a third machine with no luck. The only way the CMOS stays current is if the CF-51 is connected with the main battery or the power block is connected. Any ideas?
     
    hawk1234, Apr 24, 2014
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  2. I58SR

    I58SR Notebook Consultant

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    I wonder if there is one of those very tiny surface mounted fuses in line with the cmos battery?
     
    I58SR, Apr 24, 2014
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  3. Springfield

    Springfield Notebook Deity

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    Or a short circuit on the motherboard, maybe due to a bad capacitor or piece of metal across some pcb runs.
     
    Springfield, Apr 24, 2014
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  4. hawk1234

    hawk1234 Notebook Guru

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    Did not think there was fuse. I thought maybe a short in the motherboard or a cold solder joint.
     
    hawk1234, Apr 24, 2014
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  5. safn1949

    safn1949 I'm sure I'm on the wrong planet

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    I think I have a mother board for that......went and looked and there is a 51Q sitting in a drawer,don't ask me why as we found it a week ago.It is disassembled and the cpu is out,let me pop a cpu in it and fire it up on a external monitor.

    If it's any good you can have the whole shooting match minus ram and cpu for shipping,
     
    safn1949, Apr 26, 2014
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  6. safn1949

    safn1949 I'm sure I'm on the wrong planet

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    It does power up but no video signal,mind you this is just the bottom half. $14 shipped with the keyboard,the LCD is full of spots and I need the top cover for my last 51. Or the dumpster. :D
     
    safn1949, Apr 26, 2014
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  7. hawk1234

    hawk1234 Notebook Guru

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    safn1949, thanks, but I will pass. Going to try to repair the board I have
     
    hawk1234, May 1, 2014
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