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Drilling out a ground pad per se probably did not do any damage. The flexure or vibration on onther part of the boards may have. From: jywmpg <> To: Sent: Sunday, March 11, 2012 8:26 AM Subject: [ts-7000] Boring out the mounting holes on a TS-7260 - Bad Idea? 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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