576/Repairs: Difference between revisions

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Lost +12.5 and therefore +225 as well. Also affected were 5V and 4.5V which were both about half the required voltage.
Lost +12.5 and therefore +225 as well. Also affected were 5V and 4.5V which were both about half the required voltage.


==Some Defects without symptoms.  NOTE: Just because I did not see "symptoms" does not mean that they were not there, just that I was not experienced enough to find any such symptoms.==  
==Some Defects without symptoms.  NOTE: Just because I did not see "symptoms" does not mean that they were not there, simply that I was not experienced enough to find any such symptoms.==  
Found D507-D708 9V Zener VR TC shorted (continuity both directions) on both Step Gen and Display Board.
Found D507-D708 9V Zener VR TC shorted (continuity both directions) on both Step Gen and Display Board.
Tek's recommended replacement is a [[1N936]], available at [https://www.mouser.com Mouser Electronics].
Tek's recommended replacement is a [[1N936]], available at [https://www.mouser.com Mouser Electronics].
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