Aside from surge supressors not being effective (to the extent that they ever
are) without a proper safety/earth ground, here is another example of possible
|Printer and Photocopier Troubleshooting and Repair Collection : HP LaserJet random behavior - no ground
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(From: Leif Gastgivar (firstname.lastname@example.org).)
I bought a new HP Laserjet 5L printer and I just plugged the printer into
the socket. After a time the printer started to print out pages by its
own. I checked out the manual but I couldn't find out the problem. But
after a wile I find out, that the printer wasn't connected to the
ground. After I fixed the problem, it will have been working properly.