Posted By
MMS
on 2020-06-15
17:05:08
 |  Re: Information about PCB difference, revisions of IC, historics
Off
MCes: well it may also happen if they are not plugged into the same extender, especially if you have 3 phases (380V) in your house and they are using the different phases (zero point shift).
I saw similar thing personally at a hostel, within the same room there was 40V of difference between the two wall socket's ground. Actually the EPSON printer made a small spark sound when hot plugged to the PC's centronics port.
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