I have a 496 SA s/n b010424 that was converted into a hangar queen
at some point in its life.
It has a mix of modules pulled from five different units. Very
organized module changers worked on this unit, and left notes
on color coded tags...
I have worked my way through the unit to the point that I have
occasional error 58's (I need to go through the cal sequence).
If the phase lock control module is installed the digital storage
option fails to operate. If the phase lock module is activated
it hangs the data bus and the unit displays garbage on the display
and ceases to respond to the controls.
I do have a set of card extenders and a 1230 logic analyzer and
enjoy a good mystery, however I am not sure that I wish to spend
a couple of weeks chasing this problem.
Any suggestions on common failures on this unit?
Does anyone have have a reasonably priced spare available?
Jim, n8qoh
