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7 HDMI Troubleshooting Principles
Answer: The probable cause is that the AVR is not substituting its audio block into EDID. For the integrator, the short-term resolution is to bypass the AVR; the long-term solution is the replace the AVR.
These are the sort of HDMI troubleshooting dilemmas integrators face every day. Integrators are often asked to “break the rules” in their deployments of HDMI by their clients. The technology is flawless in single-room, short-run home theaters. The problems start when long runs and multiple zones are added to the equation, specifically the applications integrators are called upon to install.
Here are 7 troubleshooting principles from diagnostic systems manufacturer Quantum Data that need to be implemented whenever checking any existing HDMI installation. At CE Pro LIVE! on Thursday, October 27 at 2:30 p.m., CEDIA’s technical training manager Steve Rissi will present a long list of HDMI troubleshooting tips. It might be the best 41 minutes your installation staff spends in terms of education this year.
Avoid the Need to Troubleshoot: Prequalify all the equipment in the home and that you procure in your lab before you start the job.
Consider the Origin of the Problem: Determine if the existing HDMI system has ever worked. If so, what changed? Take careful notes.
Make one Change at a Time: Make only one change at a time to limit the variables. Again, take careful notes.
Simplification: Configure or “reduce” the HDMI system to the most-simple configuration that still exhibits the symptom.
Substitution: Substitute suspect devices or components with known-good devices or preferably with test equipment that can emulate sources and sinks with other convenient control functions.
Disable Protocols: Disable CEC and HDCP if possible. Disabling HDCP will immediately tell you if the problem is related to HDCP.
Diagnostic Sequence: Use the diagnostic procedure that provides greatest insight and is easiest to conduct.
Do you have the confidence and knowledge to correctly install, troubleshoot and diagnose HDMI systems? Attend CEProLive! to learn the critical aspects of HDMI device interoperability and troubleshooting techniques.
HDMI Troubleshooting
CEProLive is OCT. 27, 2011. Free registration at http://ceprolive.com.
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News · Business Resources · Wire and Cable · HDMI · Events · CEProLIVE · Ceprolive ·About the Author
5 Comments (displayed in order by date/time)
@theKevin: http://www.hdmi.org/learningcenter/glossary.aspx
HDMI Sink:
A device that receives an HDMI signal, such as an HDTV.
The author is quite a funny guy! *lol*
“Try disabling HDCP” might sound very clever but I guess if this would be that easy we would have no troubles with it as everybody would have disabled it looong ago.
Get a switcher product, which actually tells you whats going on and stop trying. We are a trade of engineers and not a trade of “let’s try this and see what will change” kind of trunk slammers.
Sorry to sound rude but this kind of articles really brings me down.
I’m real interested in the idea of disabling hdcp. Does the expert have an idea on how to disable hdcp on a blu ray machine, for example?
It might depend on your model of Blu-ray player, but if you play a non-encrypted disc (e.g. a home movie) HDCP shouldn’t be present, strictly speaking. Of course you’re making assumptions and shooting in the dark without some form of testing or signal-generating gear.
sinks = synchs