orlandoave
Experienced Member
Working on one of the early Apple ][e's with the white letters. What is stumping me is several keys are not functioning.
I have replaced all the chips in the extended ][e set with the originals, which includes the keyboard ROM, replaced all mb ram with new
chips, cleaned all keyboard connectors and re-flowed the keyboard backside motherboard connectors.
Of course replaced the keyboard with a known good one. Still have the same keys not functioning.
I noticed that without any key board plugged in there is no boot just the bummm sound. Did not know if
this is the way the older ][e's were.
The computer passes built in diags with the kernal being good. Of course I checked all traces.
Any ideas?
I have replaced all the chips in the extended ][e set with the originals, which includes the keyboard ROM, replaced all mb ram with new
chips, cleaned all keyboard connectors and re-flowed the keyboard backside motherboard connectors.
Of course replaced the keyboard with a known good one. Still have the same keys not functioning.
I noticed that without any key board plugged in there is no boot just the bummm sound. Did not know if
this is the way the older ][e's were.
The computer passes built in diags with the kernal being good. Of course I checked all traces.
Any ideas?