I was recently given a 512Ke, with an issue: On power-on, the machine repeatedly chimes, then resets, chimes, resets. The cathode tube never illuminates, nothing else occurs. the chime repeats about once/second.
I recall something with the power sweep boards on these. Other than that, before I crack her open, I figured it may be wise to ask if anyone else has encountered this issue.
Is this a known problem with a solution, or some random fault that I will need to inspect at all stages?
Update: I tested the mainboard on a known good power/sweep board. It has the same symptoms. What on the mainboard would cause this, but fail to reach the sad mac fault indicator?