Casio VDB-1000/VDB-100 "Open" repair
Finally working again after 3 years of saying "OPEN" Updated March 2019 Fixed my VDB-100 today. These watches (the VDB-100 and VDB-1000) were, in my opinion the pinnacle of Casio's innovation in the 80's and 90's. This model in particular has a touch screen and dot-matrix display and is more sophisticated than just about anything they've released before or since (android watches don't count as innovation!). It's a bit of a long story, so if you just want to know how to fix the "OPEN" message, then skip to the last picture in this article. About 3 years ago I changed the battery and when I reassembled the watch it perpetually had "OPEN" printed to the screen. When this happens none of the functions work and the touchscreen is unresponsive. The watch is on but effectively useless. VDB-100 rendered useless because it "senses" the back cover is still open. As popular as these old watches are, it amazes me there aren't be