There is no Anynet+ or CEC control, so that shouldn't be causing the issue. However, even if there was and you did, it wouldn't affect your remote. CEC sends an additional signal (along with audio and video) for controls, such as volume, power on, etc. The programmable remotes like you have are very versatile and customizable.
If this symptom doesn't happen with component cables, then it will likely be an issue with the receiver or the cable. Removing the receiver, and assuming everything else works okay, it may be an incompatibility with the receiver.
I have a Samsung rear projection HDTV (HLS 5087W) which is the video display for my home theater system. I recently installed a new receiver, a Pioneer vsx 1019 ahk, into the system, and almost immediately, started realizing a problem: the TV would periodically and spontaneously turn itself off, for no apparent reason (i.e., I didn't touch my universal remote, a Harmony model one, or even have it pointing at the TV). There was no set pattern to this phenomena, either in the frequency or the length time between occurrences. Since the new guy in my system is the Pioneer AVR, I suspected that it was the culprit in causing the problem. I consequently turned off the Pioneer Kurolink function, which I came to find out, is the AVR's CEC function. Since this didn't fix the problem, I consulted with an acquaintance who is (Hopefully) knowlegable about these things, and he advised that I should turn off the CEC on all of my HDMI equipped devices. Investigation revealed that Samsung's CEC is Anynet+. Finally, here are my questions:
1. Does my TV (HLS 5087w) have the CEC feature? (I am unable to find mention of "Anynet" in my manual, although I did find directions for programming the remote to control other devices.)
2. Assuming there is a CEC feature, how do I access it on the TV menu to turn it off?
3. If I do turn it off, will this negatively impact my universal remote's ability to control the TV?
Thanks in advance for your reply--feel free to provide any info to considerations I didn't ask about.