[SOLVED]820-3642 sees and charges battery but once unplugged turns off.

[Beto_MFC]

I've checked R6920 and R6905 and all measures ok. So it leaves me D6905. Unfortunately I don't have this dual diode here, which is SBR0330CW. Can I replace it with a similar component from a different board? For example, I have one BAT30CWFILM here and the specs on the datasheet are similar as far as I undestand it.

 

[dukefawks]

Why are you randomly replacing components while you can just measure if 3V42 is present when on battery only?
D6905 can be replaced with any dual diode that fits the foot print.

 

[Beto_MFC]

Did it all as the book! D6905 replaced, machine 100% working.