Sameish

They don't make them like they used to, as they say. If it was made today it would be welded shut and the size of a credit card but in 1980-something it was sturdy plastic, dozens of screws and discrete components that you can solder yourself. 

In this case, none of that was necessary. It just needed dismantled and given a hot soapy bath. The main disappointment is that in the course of the bathing, drying and reassembly one of the little switch caps has gone AWOL. The power switch was already missing. Still, that's what 3D printers are for so there's now a white switch where there should be four salmon pink ones and a black power switch. I suppose I can either try to colour the white one or get an appropriate coloured PLA and print four new ones.