signal loss issue

oldtrougher

I hate to start new threads, so thanks for reading. I am going to give as much info as possible, but if you can lead me to what you think the issue is I will very much appreciate it.
Hardware: Cox Cable cisco whole home DVR unit. Vizio E701I-A3 TV, Yamaha RX-V373 receiver, Samsung Blu-Ray and a Wii.
All HDMI from those units in to my receiver and one HDMI out to my TV. over the past week the tv and wii (haven't noticed this on blu ray), every now and then I will lose signal black screen for a few seconds (5 seconds max) then the screen comes back and in the upper right and corner it lists the source, resolution, etc. just like when the units are turned on.
I have noticed on my other tv's while not at the same time, they do the same thing. Those tv's are not hooked up to receivers but are connected via HDMI from cable box to TV.
I have replaced a couple of HDMI cables on the main above and that seems to have reduced the blackouts.
Do you folks think this is A) the TV B) the receiver or C) a service issue with my cable company?
I am leaning to the cable company who I have had out a few times with signal quality issues with the whole home DVR setup.
But with the Wii connection doing the same with no connection to my cable box I am hoping that it is not the receiver.
Thoughts and input please.

quad4.0

Here is my opinion: Rule out- one by one hook up device to tv straight-w/o the avr. Then if no bad issues pop up-try it with the avr. unhook everything but the device you suspect is bad.
I also suspect the cable box. I have no love for cable anyway.
Try that as the 1st device. It sounds like a "handshake" issue between the tv and stb.(cable)

oldtrougher

Thanks quad. I had planned on going straight from cable to TV and by pass that. Wanted to make sure I was on the right track.

Thanks again!