I have sound from both speakers when I use the DVD and FM receiver, but I only get a mono channel when I use the cable TV set-top box. I've checked all the connections and everything's fine. I re-checked the settings on all equipment, and everything is as per manual recommendations. Still, I only get sound from the Left side when I watch cable. Odd.
Asked our electrician, Ben, to have a look at the system and see what he could make of it. It wasn't immediate, but he spotted the one thing I overlooked: the stereo cables themselves... almost chewed through by itchy feline teeth!
Should have known. Same thing happened when the washing machine sprang a leak due to a drainage hosepipe that someone had turned into emmenthal cheese, and I know who it is.
There is a gremlin loose in the house, and its name is MOMO!