Sunday, January 24, 2010

When I test the case of my hi-fi components with a test pen it lights up ..what can I do..is it a danger?

Two daysago I bought a DVD player with a 2pin power cord..the body gives a slight shock and when tested with the test pen it lights up..all the other components display same swhen tested..AV receiver.the VCD player and others..please suggest a remedy.Thanks.When I test the case of my hi-fi components with a test pen it lights up ..what can I do..is it a danger?
In almost all electronic equipment, one of the mains wire is connected to the metallic body via a capacitor, with small capacitance. In many countries you have a different power plug from the USA: both pins are similar.





What you can to: just invert the power plug in the jack and try again (using the test pen!)When I test the case of my hi-fi components with a test pen it lights up ..what can I do..is it a danger?
Many 2 pin power cords are still polarized to only insert one way into the wall outlet. The end of one pin is bigger than the other. So maybe your wall outlet is wired backwards, meaning the black (hot wire) and white (return wire) need to be swapped on the outlet screws that they attach to. The outlet's hot screw connector metal is purposely colored darker brass to remind the electrician to hook it to the black wire. If you carefully remove the wall plate and don't touch the exposed wires, you can possibly look in with a flashlight to see if the wires are reversed. Also, the bigger pin side of the outlet should be the white wire side (verify this). A much safer way to check the outlet for correct wiring polarity is to use an inexpensive outlet polarity checker available at your home center. It also checks the green safety ground wire connection which hooks to the third round pin on the socket and 3 pin plug.
It sounds like the case of the component has become electrically ';hot.'; This is a potentially dangerous shock hazard. The internal wiring may be backward or the cord may be backward. OR the outlet it is plugged into may be wired backward. Have a qualified electrician make sure the outlet is wired correctly first. Then, if you still have the same problem, take the component back to the store and exchange it for a new one, as the one you have is defective.

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