Grounding of metal casing of Mini-Hifi

Sep 30, 2008 2 Replies
C

Hi,



I recently bought a mini Hifi system which has a metal casing and came with a 2 pin power plug. There is a tingle sensation whenever I touch the casing accidentally.



When I connect it to my TV one day and found it has no more tingle sensation, I discovered it was because it was grounded via the TV as I also have my PC connected to this TV. I used a multimedia to verify it was indeed connected to ground.



Can I connect it to earth ground to eliminate this tingle sensation? Or it should be left floating?


With Warmest Regards, Chin Siong
Vote
Twitter Facebook LinkedIn
S

Ground loops are not a very good idea, so grounding at one point for your tv/computer/hifi is the best way to do it. So, if things go all to the same power outlet, additional grounding is oke, else, leave things as they are. The tingle you feel is no problem, it comes from filter caps in the hifi and computer, and is totally safe, the caps dont leak enough mains power to hurt.

Vote
Twitter Facebook LinkedIn
W

This is not normal, and indicates poor design or something wrong with your particular sample.

You might try reversing the plug in the wall outlet.

Vote
Twitter Facebook LinkedIn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required