Grounding ?

Merlinblue

New Member
Hi everyone and thanks for the warm welcome. I have a 2275 and notice the power cord does not have a ground prong on it. Whenever I touch the receiver while it`s powered on I get a mild static type shock. Should I ground the receiver using the grounding terminal on the back of it?
Thanks for you help, Jim
 
Are we talking about a Static Discharge or an on going electrical shock as you touch it?

Interesting question... I can not give you a good Marantz answer... But as an EE that has studeid ESD some - Electro Static Discharge.


For ESD ..... Grounding the chasis to an earth ground or electrical system ground may actual make your ESD discharge more instensive because your system is now hard strapped to a ground. I will look a schematic tonight to see how the chasis is or is not isolated.... I would think it isolated and not connected to nuetral, because the AC plug is on these old units is not "keyed" in any way.

If you are getting an actual on going "shock".... that is very bad and indicates a major fault in the Primary side of the power supply....

Honestly, either way I would not gound the chassis.... If there is a fault some in the primary side...you may create a short to ground and smoke.... and if its simple ESD, you will most likely make it even worse....

ESD happens a lot more in winter....with forced hot air heat...very dry in the house... better to add a humidifier. Humidifier will even help your health.


johnk
 
Grounding

It`s a static shock, very short. Yep it`s dry in my house the evaporation from the fish tank can`t keep up with the forced hot air and the pellet stove.
Do you know the purpose of the grounding terminal on the receiver?
Thanks, Jim
 
An attempt to put a ground wire on it might even introduce an annoying ground hum. I've tried it before on another receiver and don't recommend it.
 
The grounding terminal on the receiver is where you would ground other components, i.e., a turntable.

Have you tried turning the plug over in the receptacle?
 
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