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No, the wiggling always doesn't work. Sometimes I have to unplug the HDMI cable either at the Pioneer box or my PVR. I have a cable BOX, PVR, Blu Ray/DVD, Apple TV and yes the issue seems to occur with all devices - although we mostly watch either Apple TV or Cable
I don't change cables on anything. Are you familiar with the Pioneer old TV receivers where all everything runs thru that to the TV? I haven't watched a BluRay for sometime and think that we have had the same problem but can't say for sure. Certainly the Apple TV & Cable are affected.
Regarding the system cable - are you talking about the one that runs from my Pioneer box to the TV?
I will go try playing a DVD and comeback to you shortly to let you know if it also does the samething
I just tried the DVD/Blu Ray and can't replicate it at this point. The system cable wasn't replaced at anytime since this has been occuring.