Admin: see this
link for the fix.
I've noticed that while video switching is incredibly convenient it seems to have created a number of problems with my system. Oddly the problems are centered entirely around inputting a component video signal.
The most persistant and irritating problem is that sometimes while watching DVDs there will be a brief white flash across the entire screen. After paying attention to this I noticed that they always come up at the same time. Since the problem is reproducible testing ensued to determine the cause. The white flashes never show up coming from any other video input (TiVo runs on S-video and a Gamecube on composite) or when watching TV directly over cable.
At first I thought it was just a connection issue and after putting it off for a bit due to the hassle of hauling out the receiver and checking everything I held off on it until I had to take it out for the recent software update. Everything go unplugged so the receiver could go visit the computer. When I rewired I made certain that all of the connections everywhere in the chain were secure and paid extra attention to separating out the sources, the speaker wires, and the power cords to prevent crosstalk.
After plugging everything back in I recalibrated with DVE and while doing this noticed (as I had before) that when running through the 1070 the blacker-than-black bar on the pluge pattern was no longer being passed. Since I had it before I got the 1070 I double-checked and yes, this was the result of running it through the receiver (it has nothing specifically to do with the component input as I found when running the DVD player into the 1070 through a composite input, but it is a mild disappointment that the 1070's video processing circuits don't pass it). I brushed it off because while it was important I could deal with it. It was during the recalibration that I noticed that the white flash problem still existed.
I checked a few other discs as well and they all had the same problem at various points. After settling on a test disc I cleaned it with a soft cloth and tried again. Still with the flashes! I methodically trying loosening component cables from the back of the DVD player to see if it was a problem with a particular cable... nope. I tried routing the component cable directly to the TV and this seemed to fix it. I tried replaying the chosen problem area four or five more times and the problem failed to reappear.
At this point I could tell it was definitely not the fault of the disc itself (well, since it was locked to specific points on every disc I tested it was, but that's largely irrelevant) since removing the 1070 from the loop solved the problem. It was at this point that I tried to shake it down even further. I checked the DVD player using composite cables directly into the TV and again, after multiple passes there was no flash. I tried connecting the DVD player through the 1070 with composite cables and there were no problems with flashing.
At this point it was largely isolated: the problem was coming about only when the DVD player (or perhaps another device, I don't have any other component-out equipment to test with) is connected to the 1070 on a component input. It was definitely not a problem with the component output (component out is the only video output I have connected) or it would have shown up when I upconverted from one of the non-component inputs. I finally tried checking the other two component inputs thinking it might merely be a single defective input, but I had the exact same problem at the exact same time on DVD, Video 2, and Video 3.
Any idea what might be causing this problem and, far more importantly, any ideas on how I might be able to fix it (that do not involve just passing video directly to the TV)? Also is anybody else having problems at all like this or am I the only one?