Thank you for confirming.
Unfortunately, the issues you are experiencing are symptomatic of an internal hardware defect, meaning a faulty control board or defect in the output stage of the right amplifier channel, though there are many possible failure points. This issue could be a manufacturing defect, but is also often caused by a power event (shock/surge, prolonged over/under voltage condition, etc).
This could also be the result of age related wear and tear; as a 2009 model, that type of failure wouldn’t be surprising. This soundbar is well past its designed service life at this point.
There is one step you can take here, both as a possible fix, as well as a diagnostic evaluation:
1) Unplug the power cord from the outlet
2) Wait at least 1 hour (60+ Minutes)
3) Press and hold the power button (on the set, not the remote) for 60 seconds
4) Keep holding power button while plugging back in, and for another 60 seconds after. When plugging back in, go directly to the wall outlet, bypassing any power strips or surge protectors.
If this reset process does not work, it would unfortunately confirm an internal hardware failure.
This is something that would require repairs to correct; if you're thinking about a do it yourself repair, you'll need to be comfortable and skilled with electronics repairs, which would require dismantling the set (removing the back panel of the tv), diagnostics with a digital multimeter to test voltages inside, desoldering/removing and soldering/replacing individual components, etc.
If you’re considering repair at a local shop, you’ll find a typical repair to be around $200 for diagnostics, parts, and labor.
For a unit of this size/age however, replacement will make more sense. These soundbars simply aren't designed to be repaired. There are no longer parts readily available for them, they are built to be disposable, and you could get a brand new one with a fresh warranty for $100.
Depending how you’d like to proceed here, I can help with finding parts, finding a repair shop, or recommending replacement options. Just let me know.
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