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Thread: AF-5000 on back-up power

  1. #1

    AF-5000 on back-up power

    I have a TCW back-up battery powering 2-AF-5000's. If I choose to power down a screen to save energy, is there a way to power it back up?

  2. #2
    If you are wanting to power up the EFIS on back up battery alone, hold the left lower button of the unit in for 2-3 seconds, release and then wait for the boot up

  3. #3
    Junior Member
    Join Date
    Dec 2014
    Location
    Rockville, MD
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    6

    EFIS Battery life

    On the last couple of flights, after shutdown, Both of my 5600s are indicating low battery power (7 volts) and are shutting down.
    EFIS battery failure/end of life (2015) build?
    Thanks
    JF

  4. #4
    Sounds to me like you may need to send the battery back to TCW for repair (3-4 years old?) but first I would check the TCW fuse (located on the side of the TCW box) even though it is probably ok since you see 7 volts. A call to TCW is what I would recommend.
    Larry

  5. #5
    Junior Member
    Join Date
    Dec 2014
    Location
    Rockville, MD
    Posts
    6
    I was able to ground charge the TCW by putting a charger on my aircraft, master ON, Avionics ON.
    Shed some demand by shutting down the IFD 540, #2 radio, Auto Pilot, dimming the screens.
    As usual, the original problem was operator error; trouble shooting a map/boot up issue without putting ground power on the system.
    Map/bootup issue was also operator error....bad thumb drive data transfer.
    jf
    Last edited by jfeighny; 06-05-2019 at 02:23 PM.

  6. #6
    Are you saying that during 2 flights the TCW battery did not recharge from aircraft charging system?

  7. #7
    Junior Member
    Join Date
    Dec 2014
    Location
    Rockville, MD
    Posts
    6
    Sorry for not making that clear.
    Yes, the BU did charge during the flights.
    I have made a couple more flights, and it is back to peak power, and all seems to be normal.
    jf

  8. #8
    Good to hear. :-)

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