Electric board on a SF32i

[flopes]

my SF32 I electric panel started "acting2 in a very strange way.
I have 2 batteries(2x70 a), when I connect the service one a few systems start working( navigation lights,electronics, bilge pump etc) and I can+t disconnect them( in the panel) without disconnecting the battery. When I connect the engine battery I cannot connect anything except starting the engine!!!!
I checked the charge of the batteries(fine), the charger( fine) and all the fuses I found.
Does any one have an idea about the reason for that???
And a solution!
TKS

[MalcolmP]

You've not been hit by lightening have you?

[flopes]

No, i was not hit by lightning.
Maybe,( I guess) a guy that I had changing one of the batteries mistake the polarity....But (if it was the case) he left everything well connect!