Originally Posted by availingfaith
During every movie I watch, the picture cuts out and my TV says "Looking for Signal". The audio still works during this time. It only lasts about 3-5 seconds but it's annoying. With older movies it happens 5-7 times during a movie and with newer movies it happens 1-2 times.
I'm having a similar issue on component-hdmi, but on my Wii. I nailed it down to something specific. It seems to be something to do with the component's sensitivity/reference level. Symptoms:
1) Highlights are squashed. For example, on the wii's message screen, you cannot see the envelope borders or the lines in the "paper". Other screens that are supposed to be striped in white/light color are also just white. anti-aliased fonts look funky because the borders transition too harshly into white, etc. It's easy to see this if you look at some snow photos - they all look plain white.
2) Any screen that's "too white" causes the receiver to lose signal. I know it's the receiver because it outputs the blue screen after the TV is done resyncing. Some examples on the wii are the white transition screens, the message screen, and any webpage with white background.
3) as soon as I "darken" the screen (e.g. press home button on wii, which will fade to dark) the signal gets back.
4) The signal loss only happens on component (either 480p or 480i). On composite the highlights are still squashed, but there's no loss of signal.
5) Even on component, it doesn't happen always. It seems to happen more once the receiver is warmed up. After reading your msg I tried a reset (my speaker was already cold), and it seemed to help with the dropouts for a bit (highlights still squashed, but no dropouts), but once it warmed up the dropouts came back. I tried resetting again to no avail.
What I presume is happening is that the white reference level/sensitivity is off, which could cause all light colors to be clipped to white, and real white to be off bounds. The upscaler may be able to deal with small "too white" parts, but once a screen has too much white, the receiver detects the whole signal as "out of bounds" and drops the signal.
You can try recording a disc with all-white jpegs (and some with very light gray detail, e.g. snow pictures), to check if your issue is similar to mine.