This is from a Logitech Z680 amp

The pins are labeled

SHIELD
VREGSS
SGND
VREGDD
MUTE AMP
STANDBY AMP
SGND
SUB AMP
SGND
CENTER AMP

 

I guess that all the SGNDs should be tied to ground. Try checking with a meter if they are connected together.

 

I guess that all the SGNDs should be tied to ground. Try checking with a meter if they are connected together.

I will check when I get my replacement IC chip, One thing I have to ask say if one one end was connected to ground (RCA cable) that would not be a reason for the chip to open up and smoke would it?

 

FWIW, "SGND" on my LabJack data acquisition device is connected to ground via a self-reseting thermal fuse.

I guess my point is, read the documentation.

 

You don't get docs like that on a consumer device

Anyways shield and Sgnd are both connected together.