Thank you, Angela! *Grin*
We may already be feeling the effects of Steve's recoding - today a repairman came out to check my brother's minifridge out, which had been throwing the earth leakage. While he was here he spotted our old fridge, which had stopped working several months ago, and offered to check it out for us for free. We've been using a smaller fridge ever since for food and it's very cramped, because we haven't been able to afford a new one.
But good news! The repairman said that if the fridge stays turned on for a couple of days without breaking (just to ensure that the several months of being off hasn't made it deteriorate), he could put in a new part for $150AUD and get it fixed - which saves us over a thousand dollars of the price of getting a new fridge of the same size!