Originally Posted by chamii123
Contacted JVC today and was advised to connect the NVIDIA shield directly to the NX7 and bypass my AVR ( Marantz SR6013) and to send it to a local authorized repairer to diagnose it it reoccurs.
It would have been interesting to see if removing things from the HDMI chain do in fact remove the issue, but since you updated your firmware, you introduced a second factor that could prevent ever knowing if it is the cause.
While others have said definitively that it is not an HDMI issue or an issue with any source, their basis for this conclusion is that they replaced the source or the cable and it didn't fix it. Sometimes it is not just one thing, and sometimes you replace a part with a faulty or incompatible part.
Case in point: I've had the Shield cause my LCD TV to glitch so bad it needed a full power cycle to fix, not terribly unlike the JVC blue line issue. The Shield was mounted vertically on a wall under the TV behind a sound bar, and would frequently glitch out, most likely due to overheating. Sometimes when it glitched, it messed up the TV too and required me to unplug the TV, wait a minute, and plug it back in, and then wait for the TV to turn back on, which often took over 5 minutes. This happened maybe 5 or 6 times in a little over a year. That Shield was replaced with a FireTV box about a year ago, and the TV has not had the same issue that required a full power cycle since then. Yet that same exact Shield has been my source for the theater, but sitting on a shelf on the rack, and it has only needed to be rebooted twice, as opposed to about twice a week, and neither glitch caused a problem with the projector.
One could say that based on this, it is possible for a product that works perfectly in one configuration to cause a VERY similar glitch to the JVC blue line issue in a slightly different configuration. And if one source can cause a display to glitch out so bad that it requires a power cycle, that might suggest that with HDMI, ANY source could cause ANY display to glitch out so bad that it requires a complete reboot.
tl:dr - nobody here has the tools or understanding to be able to draw any conclusions. You can speculate all you want, and in the end JVC will either fix the problem with firmware revisions or replace all the bad hardware under warranty.