Got myself one of these, which arrived today -

A Sanyo MPC-100 MSX 1 computer. The first MSX in my collection.
Was sold spares/repairs with keyboard issues, such as repeating keys and a wonky M key. I had an idea before I bought it what the issue might be, so I opened it up and simply repeatedly tapped the keyboard from the backside in the area of the stuck key. Plugged it in, turned it on and bingo, the computer is 100% in perfect working order, all keys fully functional. Judging by the dust and debris both outside and inside the computer, it just all needs a good cleaning, including the keyboard membrane. The wonky key should be fixable too, just have to remove the key and straighten it back up.
All in all, I'm quite happy with the newest addition to my collection. 😎 Just testing the waters at the moment, going to be loading games from .cas tape images before getting 1 of the addon cartridges later in the year (probably the MegaFlashROM SCC+ SD). I may even consider an MSX2 or MSX2+ in the future.