CF-31 Odd Power On/Off issue

Discussion in 'Panasonic' started by NEOD, Apr 27, 2018.

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  1. NEOD

    NEOD Newbie

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    Hello:

    I have a CF-31 that will only power on if you remove and re-insert the battery. When you perform this maneuver, the CF-31 will turn on as soon as you insert the battery. Once turned on sliding the power switch to the right and holding for any length of time will not shutdown the unit. If you attempt to turn it on again via the power switch slider, nothing happens until you pull the battery again and re-insert.

    I have installed a brand new genuine Panasonic battery and replaced the power switch/LED PCB w/ a brand new assembly. Same symptoms. All parts came from Heartland.

    Thanks for looking.

    Stumped
     
  2. Shawn

    Shawn Crackpot Search Ninja and Options Whore

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    Did you replace the cable that connects the switch assembly?
    Did you verify that the other end of that cable is properly inserted into the motherboard?
     
  3. NEOD

    NEOD Newbie

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    I did not replace the ribbon cable, but I just pulled all the ribbon cable connections and re-seated them a few minutes ago. No love, same symptom.

    The ribbon cable to the power switch is also used for the SATA connector and the touchpad/mouse buttons.

    The unit works fine once powered up with no other issues and the battery charges.
     
  4. Shawn

    Shawn Crackpot Search Ninja and Options Whore

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    Did you check the power settings in the BIOS?
    Can you post a photo of the main BIOS page? The one that shows model and BIOS version?
     
    SHEEPMAN! likes this.
  5. SHEEPMAN!

    SHEEPMAN! Freelance

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    Main page of bios.

    Try disabling power on by AC. <<<<<<<<<<<<
     
  6. NEOD

    NEOD Newbie

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    The BIOS is at the latest version, 4.00L16.
     
  7. NEOD

    NEOD Newbie

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    Power on by AC is already disabled and I know the BIOS settings have not been changed as F2 requires a password to gain supervisor access to the BIOS settings.
     
  8. SHEEPMAN!

    SHEEPMAN! Freelance

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    I've seen them power on when the cmos battery was plugged in. Is it keeping the correct time?

    Since it's charging then probably the power switch....that's the flimsiest component.
     
  9. NEOD

    NEOD Newbie

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    BIOS time is correct and I already replaced the power switch today with a new factory PCB ASSY from Heartland.

    Thanks!
     
  10. NEOD

    NEOD Newbie

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    I pulled the rocker switch when I replaced the power switch PCB. Engaging the power tact switch with a plastic tool manually.
     
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