electrical problem on abi jubilee 1990

[ian_374315499]

hello there im new to caravanning and uinfortunatley in need of a little advice. we have an early 90's abi jubille pioneer

ill start at the beginning as its a little difficult to explain

i tested all the electrics prior to setting off on our trip hooked up to the house mains.

on arrival i had no power to the 12v side of the van when on site hook up 240v was fine. under the bench we have the 240 coming in to a rcd for 240v and a feed off to a grey box with logic 1 on the side with a red "mains on" rocker switch with a 5a fuse (blown) the leisure battery terminals are fed on the top of the unit and 2 20a feeds off to somewhere. now on my cupboard there is a small unit with 3 switches (awning light, pump, caravan/off/car switch and a battery power indicator)

possibly a zig style unit.

now i replaced the 5a fuse in the box only to have it blow when i switch the red rocker on.

just wondered where to start looking to fault find, could it be on the 12v or 240v side.

any help appreciated

thanks ian

 

[david_374315498]

is this a battery charger or a 12 volt transformer do you no?

 

[ian_374315499]

is this a battery charger or a 12 volt transformer do you no?

hello there its a transformer/rectifier 240v in on a 5a fuse and 2 20a 12v outputs and also chargers battery, its a logic 1 make,

ive removed it and brought it into work for closer inspection.

think i may need a new one