OK, I understand now. If you are having a signal loss on BDP-95 HDMI-1 and you are using a good 10-foot cable (and certified for high speed), then HDMI-1 likely has an issue. The 50-foot cable results aren't very useful since 50-feet is officially outside of the high speed cable range but the 10 foot cable should provide solid communications (again assuming the cable is good).
Try rebooting the BDP-95 and make sure you have the latest firmware. One additional thing you could try is to use your in83's DVI port (I believe it has one). You'll need an HDMI-->DVI converter or a cable with HDMI on one end and DVI on the other.
Unfortunately, unless anyone else can think of another thing to try, I think your next step if the above doesn't help is to contact OPPO support. Luckily they provide some of the best support I've found. The few times I've had questions, they have always responded within a few hours by email (even on the weekends). Very impressive support!