hotkey wrote:Hello,
I had the same problem . ground loop over earth wire from power socket to DC switch.
I use now power supply with two wires between power socket and DC switch (without earth).
I tried also to cut the ground wire on standard DC supply but I did not like this, because measured potential of DC pins was on cca 110-120V (european power supply 230V AC, 50Hz). and low voltage sources like Line-In ports do not neccessary resist such voltage!
I assume that standard power supplies are making some virtual ground and when the ground wire i s cut then DC potential can fly on the cca half of the AC voltage, so I would not recomend to just cut the wire.
Better to find some two wire power supplies.
Regards,
My laptop charger using a detachable 3 prong power cable. That doesn't make any difference, or does it?
It's extremely hard to find a different changer that has the same spec. Even if I could find one there would still a little chance that it has the same DC plug.