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Receiver HDMI problem

Have a Marantz 7008 for which I already had HDMI board serviced. Running 35' HDMI cable to projector. Connected to Marantz is cable box and Apple TV.
Situation: HDMI cable from Apple TV directly to projector no problem everything works normally.
2) HDMI directly from cable box to projector = no signal
3) Connect 35' HDMI cable from projector to receiver = no signal from cable box or Apple TV Called Marantz told me to use booster so bought a Gefen Superbooster plus. Still no signal.
Everything points to long run cable problem except how come connecting long run from Apple TV to projector works but not directly from cable box (2). ???
What's going on and how do I fix this?
Thank you. Tom
tkolb
zd542
5,339 posts
 
I never knew this was such a big problem. I assume you are talking about the audio portion of HDMI. I've been using HDMI, video only to TV's and computer monitors with no issues.
cerrot's avatar
cerrot
1,700 posts
 
He is correct. HDMI ha shaking issues quite unique. Only real certified cables will let them hand shake properly over that long distance.
theo's avatar
theo
2,690 posts
 
As Cerrot says the handshake is vital. Also make sure all your resolution settings are the same on each component in the signal chain. Whether it be 720p or 1080p, everything needs to be the same to help in that "handshake" with HDMI. In my experience also, make sure you give the time required when switching. In my system sometimes I get picture and no sound and find that switching source inputs on the processor can trigger that handshake between the two, but also sometimes it can take two or three minutes to get results. In short HDMI sucks but we are stuck with it.
You can argue cable brands and quality here all day long, but my finding has been that matching the brands helps. This all my opinion based on research, seminars and frustration/experience. Good Luck!
zd542
5,339 posts
 
"You can argue cable brands and quality here all day long, but my finding has been that matching the brands helps."

When you say matching the brands, are you talking about cables or components?
prpixel
876 posts
 
Has the cable box ever worked over HDMI?
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