Any Sherlocks out there? I can't figure this one out: I have a Pany RP56 connected via Toslink to a Classe' preamp/processor. On an increasing basis I am losing the center channel of DD5.1 movies. It is sudden but not complete, there is still sound but about 20dB down. I have narrowed the problem to either the DVD player or the processor but can't figure out which. Here are the conflicting pieces of data: 1. When I put a different (Pany RV30) player in line the problem sometimes goes away and sometimes doesn't. 2. When I turn off and unplug the Pany for an hour, the problem usually goes away. When I do the same to the processor it doesn't. 3. The problem is more common with dirty (rental) discs but not always. Cleaning the discs sometimes helps and sometimes doesn't. 4. Changing Toslink cables doesn't matter. Switching power amp channels puts the problem in another speaker. This is why I have narrowed it to the DVD or processor. Kind of sounds like a capacitor problem or a laser problem but that is pure guessing. Of course it could be both machines but it would be unlikely to have the same symptom. Any good solutions or even ideas to try??