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Old 01-26-2016, 12:29 PM - Thread Starter
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HDMI processing issue - receiver or TV?

My home theater setup has worked well for me for almost a year. Recently, I've had some issues with video processing and I can't figure it out.

All of my sources run via HDMI through my Marantz SR7008 to my Samsung F8500 plasma. The problems I've been having recently:
- DirecTV receiver: shows that certain resolutions are not processed by my TV (which are not true - it's capable of processing all available)

- Roku: when switching to watch Roku, "No Signal" is displayed on the TV. It recognizes the source (if it didn't, a "Marantz" logo would appear) but says it's not getting any video signal. If I let it sit long enough, the Roku goes into a "reset loop" where it shows the boot screen for about 15 seconds, loses video for about 20 seconds, boot screen, no video....

- Home theater PC: runs windows 7 and has HDMI out. When switching to this input, the resolution is often changed. Sometimes I get a message saying "resolution not supported." Other times, the desktop is displayed, but in some resolution not 1920x1080 like it should be. The resolution that's displayed is not consistent (not like it's 1920x1080 or something else - it's variable)

Disconnecting the HDMI cable that connects receiver to TV from either end (connected to TV or connected to receiver) is the only thing that works. All I need to do is unplug and plug right back in and things are back to normal. These issues also don't happen every time I try to use the devices. Probably about 50% of the time.

Things I've tried that have had no effect:
- Change cables between devices and receiver and between receiver and TV
- Change devices (had a back up Roku)
- Perform factory resets to receiver and TV. It might be worth noting that everything worked fine after these resets for maybe 2-3 days before having the issues again. However, that happened with both the TV and the receiver reset, so it didn't give me any clue as to the culprit.
- Turn on/off video processing in receiver

Does anyone have any clue what's going on? Any way to diagnose whether it's the TV or the receiver without going through the hassle of replacing one? Really frustrating since everything used to work fine!

Any suggestions are appreciated. Thanks!
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