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Post originale di: Michael Shaw ,


If you have the adapter you can test to see which blade of the plug is not powered.

Looking at a picture of the plug itself on the web I can see that the outer barrel of the adapter is (-) so using a continuity tester with one probe on the outer barrel, move between the 2 blades until you get a signal, that blade of the plug is neutral and the other will be positive giving you the polarity.

If you do not have the adapter you can attempt to match to the configuration shown in this photo or just buy a replacement.