25-07-2021, 08:14 PM
Well the good news first. Making the cable was relatively easy...
Initially I couldn't get any of the three to boot at all, which was a bit disappointing. I ended up opening up the sealed unit, which also turned out to be a good thing as the battery inside was just starting to corrode. This also revealed the top board had come loose from the baseboard. I reseated the baseboard and it booted! The keyboard is... about what i was expecting. All the keys seem to work, with a bit of force, so that's something :-)
I still haven't got any life out of either of the other boards. (No beep, no signal) I suspect I'll need to break out either the logic probe or the 'scope to get any further with them.
How do people work on these with the two boards? I can't possibly probe out the lower board with the upper board in place... Lots of Dupont leads?
Initially I couldn't get any of the three to boot at all, which was a bit disappointing. I ended up opening up the sealed unit, which also turned out to be a good thing as the battery inside was just starting to corrode. This also revealed the top board had come loose from the baseboard. I reseated the baseboard and it booted! The keyboard is... about what i was expecting. All the keys seem to work, with a bit of force, so that's something :-)
I still haven't got any life out of either of the other boards. (No beep, no signal) I suspect I'll need to break out either the logic probe or the 'scope to get any further with them.
How do people work on these with the two boards? I can't possibly probe out the lower board with the upper board in place... Lots of Dupont leads?
John "CheshireNoir" Parker
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One Dark Little Kitten
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One Dark Little Kitten