I will expand on my previous two posts because it is apparently not very clear what I was recommending:

1. Get a cheap DVI->HDMI adapter like these

2. "borrow" the DVI-DVI cable that you are using for your satellite box and that you know works thru the 990.

3. Attach the DVI->HDMI adapter from step 1 to the end of the DVI cable.

4. Connect the side with the HDMI adapter to the Oppo and the DVI side to the 990.

If it works: Congratulations, you can save the HDMI cable for a (very) rainy day and go get yourself another DVI cable.

If it doesn't work: try changing resolutions on the Oppo and/or your television.

If it still doesn't work: I only wasted you $6-$10. Sorry...

Good luck