First post here, I stumbled upon this forum after looking into the screen issues of a recently acquired Microvision! Being of the Gameboy age I was fascinated by my dads copy of the Microvision. Though his lived a short life and had stopped working by about 1987 I would keep looking at the device, wishing it would just start working again. I still have a boxed collection of his games thankfully and am excited to dig them out and finally get to play some of the ones I missed out on before the machine crashed and burned.
Not sure what ended up happening to his MV but just recently found a CIB unit with Block Buster for $2 and was absolutely floored. Opened it up and turned it on. It worked!.... KINDA! The unit I dug up has a somewhat working LCD and am not sure if it can be finessed into normal operation. When playing Block Buster the paddle moves around and game field populates but when the ball starts to get locked up and down into a single row the entire row goes black and stays that way until the ball hits a new angle. There is some overall random LCD illumination/non-illumination oddities but overall the cells seem to turn off an on even though they do it at improper times occasionally. I have tried tweaking the contrast knob on the back and while it does adjust the darkness of each cell it doesn't seem to clear up erratic behavior. Do you think something can be done to clean this behavior up? I can post some images of the active screen when I get around the device. All I can say is this little survivor is in much better shape than the last time I saw my dads defeated machine.
Depending on the complexity of a swap on the screen I do think I am game to try my hand at a replacement, would hate to break an otherwise working unit but... $2 is all I have in on the full device so far. Thank you for keeping hope alive on these old noisemakers!