Let me preface this my saying that I am chagrined to have to ask the following:
Will boring out the mounting holes on a TS-7260 to 9/64" cause it to fail?
I have several of them that have failed in the last few days with the same odd
errors and find that the only thing they appear to have in common is that an
industrious, if ill-trained, employee drilled them out to accommodate the
available standoffs.
After discovering this, I ran a continuity check between the negative pin on
the power connector and the metal disks surrounding each the mounting holes and
found no continuity. A similar check on a working board showed continuity
between all five points (i.e. all mounting holes are connected to ground).
So, is that enough to render a board inoperable? And if so, can the boards be
fixed by re-establishing ground to the outer, and presumably inner, board
layers?
Red Faced
jw
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