My Setup:
SONY PS3 to Onkyo 706 to Optoma HD65

My Problem:
Everything works fine when using a component cable from the PS3 to the Onkyo and HDMI to HD65. However, when I substitute an HDMI cable for the component cable the HD65 will find the signal momentarily and immediately drop it. I have substituted an LCD TV for the HD65 and it works flawlessly.

This is what leads me to believe I'm experiencing handshake issues. I've contacted Optoma about this issue and they blamed Onkyo. They also told me I needed a signal booster. Is this true? I'm afraid if I now contact Onkyo they'll tell me It's Optoma's fault. Any ideas as to what I can try next?

How long is the HDMI cable from the Onkyo to the TV?

Does it work if you connect HDMI directly from the PS3 to the HD65?

The HDMI cable from the Onkyo to the TV is a 25ft Monoprice (22AWG) HDMI cable. Yes, it works perfectly when the PS3 is connected directly to the HD65 via the HDMI cable.

Does sound like it's a handshake problem between the PS3, the Onkyo, and the HD65. Unfortunately it's hard to tell which one's the culprit. Do you have another HDMI source you can try?

I've also tried my MacBook Pro with a 6' DVI to HDMI cable to the Onkyo and HDMI to the HD65. That didn't work either. However, It does work when I hook the MacBook directly to the projector with the DVI to HDMI cable.

Does it make a difference with the handshake if you drop the PS3's resolution down to 720p?

I've tried all settings in the PS3 from 480p to 1080p without success.

Man that is indeed a pain. I have handshake issues before but this one involved a splitter but the common factor is a PS3 and an Onkyo (705) receiver was involved.

Yeah, I'm really hoping it doesn't come down to having to replace the projector or AVR to solve the problem.

From a new member: My Samsung DLP HD TV requires that a turned-on, HDMI-enabled unit be connected before its HDMI capability can be activated. I want to connect a Western Digital "HDTV" unit to it, via HDMI, that requires the exact same condition of its TV-set "target". An unbelievably stupid state of affairs! Am I to be told that I may either a) junk the TV for a different one or b) get rid of the WD unit? Anyone have a better solution? How about a special HDMI cable that incorporates a spoofer, that will fool each unit into thinking that it's connected to a working HDMI port? There's a product for you!