Had same problem, and have solved it. Original setup was per soundbar manual: From cable box to soundbar via HDMI, then soundbar to TV also via HDMI. Everything worked from Comcast remote except volume control. Needed soundbar remote to raise/lower audio. Wasted hours with several agents at both Comcast and Samsung support, playing with codes, etc. After much troubleshooting on my own, I finally got it working by changing connection sequence: From cable box to TV via HDMI, then from TV to soundbar via Digital Optical. This places TV ahead of soundbar. Now I can control everything from Comcast/Xfinity remote. Perhaps this can work for you, too?
I wish I could answer that intelligently. Before I changed the wiring sequence, I tried 5 to 10 codes with the original recommended sequence. Not one had any effect. Then I changed the wiring, and it worked. Whether it worked in combination with something altered by one of those earlier code attempts, I cannot say.
I have used two codes for the Samsung f550 soundbar. 32609 and 22609 should both work in the AUX spot! On/Off, Volume, and Source (using the TV/VCR button)
To Hatch9135: Your recent comment ("..hooked up the way you did In your these instructions..") is not clear about whose hookup you are referring to. Are talking about mine, or those mentioned by other commenters?
The other people found codes that worked, which they describe in their comments.
In my case - per my 11/27/13 comment - I do not remember which codes I used, because I had tried several of them unsuccessfully *prior* to changing the wiring from Samsung's recommendation. After I changed the wiring, I enterred no further codes; it just worked as soon as I turned it on.
Whether that success was brought about by one of those earlier-tried-and-forgotten codes in combination with the later wiring change, I am unable to say. (TV is also Samsung)
Thanks for your feedback. I gave up on the codes after searching for toooo long! I found the solution though on my own....
I have an APC Back-UPS ES 750 Battery Backup & Surge Protector. There is a MASTER power plugin that has three plugins that are controlled by the MASTER. I plugged my TV into the MASTER and plugged my Soundbar, My BluRay and the subwoofer into the plugins controlled by the MASTER. I plugged my cable box, Wii and a lamp into the other available plugins. WA-LA! It works. No codes!!!
Hopefully this may help others figure out their wiring. It was a piece of cake and didn't take but 5 minutes to hook it all up.
32609 worked for me, however only on my new remote. I have an older remote and while it is the same style, it is about 2 years old and the code will not take in the older remote.