| Post 28 made on Friday June 27, 2014 at 13:33 |
Ernie Gilman Yes, That Ernie! |
Joined:
Posts: | December 2001
30,104 |
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Actually, I just realized that nobody has weighed in on the original issue, that a ground cable was not screwed down to the chassis.
I'll bet that it doesn't matter. That ring was to be under the screw that it's near so that the chassis of the thing has a connection to power ground. There's nothing at all about power ground involved in the signal flow of that device. It's a safety feature in case of dangerous voltages accidentally being present inside the device, for instance as the result of a huge surge on the power line. It's sloppy, it's wrong, but it's not a problem as far as I can see.
The unit should have failed a HiPot test, however. Thanks, China.
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