Maybe i should have done this from the beginning. Here are some pictures of the inside of my keyboard:










The first two pictures are of the upper right hand side of the board, the third is the left hand side which houses the batteries, and the last is the interior of the board and the underside of the top of the board (keys, etc.) If those dont work, ill include links to my photobucket for higher resolution pics.


I did as James Perrett instructed. I seem to be getting the same reading at the end of the red wire where it meets the motherboard (6.34 volts). Although i havent pulled it out yet, it seems like the next closest thing to the red wire is indeed the input for an AC adapter. The power switch is not in this area: it is located on the long thin circuit board below the main board (the one with all the grey dot buttons for the keys). I guess i should check this section next?

@Artifus: Im almost positive this board was made in 1983. Its certainly no older than 80 and no newer than 90. I would LOVE to find some info on the chips in this board (as well as chips i have from other projects), but have so far been unsuccesfull finding chip info on the web. I wish there was some database where you could just plug in the make and number and it would tell you what it does. Anyone have any suggestions for identifying chips?

Once again, thank you all so much.

Edited by bassdude (21/02/11 05:44 AM)

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