After cleaning and modding my brand very old 85's 122 Type II, I was using the keyboard when, suddenly, the USB port of the arduino just fell apart, detaching itself from the board. After that, all what I have from another soarer is a R05 everytime I press a key. So... something must be fried inside the 122's PCB.
There are 4 chips. 3 are very common, but I can't find online the large one -1391332 528606 QL JH88747 ZC93902P (6805)- (http://kbdbabel.org/schematic/kbdbabel_ ... 97_kbd.pdf).
The other path to bring the keyboard alive is to try one of those Model H PCBs, but I don't know if they are compatible with the 122s.
Any one knows where to look for the 6805 chip or if the Model H is compatible with this model?
Thanks.
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