hotpoint aquairius dish washer and fridge freezer?

hi can anyone help. My dishwasher just packed up there are no lights on i have changed the fuse in the plug and still nothing it just seems dead. Also my Samsung side by side fridge freezer keeps tripping the electrics i have tried different plug sockets it will run for about 4 or five hours then trip the switch again can anybody help please i bought these when i was working but i have no job now and cannot afford new ones