A1259 820-01598 is a pulsing voltage on CHGR_BGATE normal?

[mbcontrol]

Hello,
i am working on a water damaged 820-01598 and have a short question about the voltage on line CHGR-BGATE from U7000. The board is out of the machine and nothing connected.

I measure pulsing 12,6V and 4,8V every 2-3 Seconds.
Is this normal?

(Boardview and schematics is available - but I think it's almost the same circuit as with older boards with U7000)

Thanks for any help.

[piernov]

Re: A1259 820-01598 is a pulsing voltage on CHGR_BGATE normal?

If battery is deep discharged, dead or not plugged in properly yes.

[mbcontrol]

Re: A1259 820-01598 is a pulsing voltage on CHGR_BGATE normal?

Thank you piernov, that's what I suspected.