My one was an old AEG LAVAMAT Deluxe Electronic, which was one of the first microprocessor controlled washing machines. It was new in around 1977, and had a mask ROM processor on it ( and to confuse things they took the chip and reversed the pins so you could not trace the actual micro, but as the pins were all correct but mirrored I found the data sheet in my data book) and a separate power board that drove the DC motor. I had to repair that a few times, dead diodes, dead resistors and dead SAA speed controller, but never a dead Siemens capacitor ever, though there were a lot of dry joints and hot resistors that fell off. Micro had a crystal fail, so I unsoldered it and turned it around and it worked ( famous fault on Apple boards as well, something about too high a drive level) for years again. Plastic parts that broke and were repaired with epoxy and steel sleeves, and rusting case as well. When you could hear it in a spin cycle 3 floors down through a closed door I decided it was time to retire it.