My samsung rear speakers are not putting out any sound, they are linked, I even unlinked relinked and stil nothing ? was working just fine with my soundbar 650 and just switched it out with the 750?

SOURCE: Pioneer SX-750 Old School Need Help

It could be a dirty control or switch, working them back and forth could prove that. Other than that, It's likely bad outputs. A unit that old may have transistors for outputs but might be IC's. Transistors can be tested with an ohm meter to see if they're good or not. Also if it has transistor outputs, they may have a small value resistor on the Emitters, check those as well.

Hope that helps...

Geno

SOURCE: Cannot turn TV off when playing CD's with samsung HT-X810R/LG50PG

Problem traced to Samsung's Anynet+ System interacting with LG's Simplink. They seem to be
compatible. Cured by Menu/Option/Simplink/OFF. Hope this helps with anyone else having this problem. trev6.

SOURCE: durango radio fade problems

Your front speakers are more than likely blown. They make all kinds of different models and price ranges to look at. This gives you a good opportunity to upgrade your stock speakers to handle what your throwing at it.

SOURCE: 7.1 speaker setup: no sound coming from right front/surr speakers

check the patch cord the right side might have went bad

SOURCE: i have the tvee soundbar

It is not latching on to the soundbar transmitter. Is the locked light on the device turning on.
Wireless devices are sometimes known to drift. Is the sub silent when the soundbar power is off ?. Even then if its making this sound, the subwoofer amplifier is oscillating at very low frequency. You will need professional help and needs to be repaired.