I sent my Integra DTR-6.9 off to this guy in Phoenix AZ who advertises on Ebay and it came back working flawlessly.
He only works on Onkyo TX-SR606, HT-R667, HT-R960, HT-S9100, TX-SR706*, or an Integra DTR-5.9, or DTR-6.9*, Audio/Video Receivers.
If you're dealing with one of the models he accepts I would pay him rather than Onkyo, since Onkyo replaces the caps with the same under-speced parts, which his listing and my experience suggest will fail again. He charges $75 for many models, twice that for a couple of the heavier models (*), plus you pay to ship it to Phoenix.
http://pages.ebay.com/link/?nav=item.view&alt=web&id=150664829211&globalID=EBAY-US
The receiver was one I originally bought on eBay that was described as having had its hdmi issues fixed by Onkyo; for a while it was fine but it gradually went through the 5 stages of failure described in the listing linked to above. Now all is well, so far.
I have a second DTR 6.9 in my closet that I'm tempted to get fixed as well, but not for $150 plus shipping. Thought this might interest one of you guys.