ScutBoy
Experienced Member
I was able to steal an hour or so and check out my new-to-me Model II.
Opened the case, found everything I expected to be there - 4 boards in the cage, everything cabled up, no obvious bad caps or components on a visual of the power supply.
I pulled each card and gave the chips a quick reset. Made sure the four cards were seated correctly and fully back in the cage.
Now, being foolish _and_ impatient, I plugged in the keyboard and the power, and hit the switch.
Case fan and floppy motor started. The red LED on the front did not come on.
With the brightness up, there is raster on the screen, but no indication of any output.
Hitting the reset switch did nothing.
No combination of keys on the keyboard does anything. None of the keys with LEDs light when pressed.
When I power off the machine, the floppy drive light flashes briefly. I never put any floppies in the drive. Oh- I have the external drive cabinet - I tried both with it connected and not connected. The doc talked about having some kind of terminator on the disk port if you didn't have the expansion, so I made sure to try it with the expansion chassis powered up and connected.
I looked briefly through the Tech Ref troubleshooting section, but nothing there made any difference.
Seems at this point, I should confirm that I'm getting good voltages from the PS, but I need to figure out good places to measure.
I'm guessing the failure of the power LED may be significant; I did make sure its connector and the reset switch connectors were making good contact at the boards.
Any wisdom from the collective on what to check/what to try next? I knew this guy would be a challenge - now I will begin to find out how much of a challenge
TIA for any advice!
Opened the case, found everything I expected to be there - 4 boards in the cage, everything cabled up, no obvious bad caps or components on a visual of the power supply.
I pulled each card and gave the chips a quick reset. Made sure the four cards were seated correctly and fully back in the cage.
Now, being foolish _and_ impatient, I plugged in the keyboard and the power, and hit the switch.
Case fan and floppy motor started. The red LED on the front did not come on.
With the brightness up, there is raster on the screen, but no indication of any output.
Hitting the reset switch did nothing.
No combination of keys on the keyboard does anything. None of the keys with LEDs light when pressed.
When I power off the machine, the floppy drive light flashes briefly. I never put any floppies in the drive. Oh- I have the external drive cabinet - I tried both with it connected and not connected. The doc talked about having some kind of terminator on the disk port if you didn't have the expansion, so I made sure to try it with the expansion chassis powered up and connected.
I looked briefly through the Tech Ref troubleshooting section, but nothing there made any difference.
Seems at this point, I should confirm that I'm getting good voltages from the PS, but I need to figure out good places to measure.
I'm guessing the failure of the power LED may be significant; I did make sure its connector and the reset switch connectors were making good contact at the boards.
Any wisdom from the collective on what to check/what to try next? I knew this guy would be a challenge - now I will begin to find out how much of a challenge
TIA for any advice!