Oppo-Integra handshake problem

My Oppo 981 has no problem playing multi-ch SACD or DVD-A discs thru my Integra 8.8 AVR. . .as long as my Mitsubishi DLP RPTV is turned on. If the tv is off, the Integra's display shows "no signal" and no music is heard. All 3 components are connected using HDMI 1.3a cables. Needless to say, I'd rather not have to power up the 73" TV just to listen to music.

Anyone else had this problem? If so, what's the fix?

Oppo says it's a firmware problem with the Integra; Integra is impossible to reach via email. Very poor customer service.

Thanks to anyone who can provide some input or suggestions.