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Interesting HDMI Problem: OPPO UDP-205

I have a McIntosh MX122, OPPO UDP-205, and a Sony Bravia OLED.   The OPPO is connected to the MX122 through both an HDMI connection (BluRay "in") and RCA patch cables (CD "in") so that I can use the OPPO DACs for listening to audio CDs.

The Sony is connected to the MX122 through the Monitor 1 output.

I've been having intermittent audio dropouts when using the analog connection to listen to audio CDs on the UDP-205.   I've finally traced the problem to the Sony Bravia.   The Sony implementation of Consumer Electronics Control (CEC) is called "Bravia Sync."

In the Bravia Sync menu, Sony does not provide an "OFF" setting.  They have "Enable" and...nothing to turn CEC "OFF."  What they have you do is delete the HDMI equipment list from the Sony CEC sub-menu.   This does NOT turn CEC "OFF" - it simply hides the expanded CEC menu as you no longer have an equipment list to control, while leaving the CEC feature / circuit active.

The CEC is active even when the Sony is turned "OFF," because, in reality - the Sony is on standby and only the screen has been turned off.  The electronics are still active because the Sony can be programmed to automatically turn itself "ON" when it senses a different piece of equipment turn on through the CEC / HDMI circuit.

What happens with the Sony turned "ON" or "OFF" is that the Sony constantly looks for equipment through the HDMI connection.   It's randomly looking for a friend and sending out a handshake signal.  This disrupts the UDP-205 as it's processing audio through its DACs and it momentarily times out to send a "Yeah stupid, I'm still here" response back to the Sony.

Haven't quite figured out where to go from here...as I don't have a resolution to the problem - but, I thought this might help someone else if they're having the same type of problem.



buckhorn_cortez
buckhorn_cortez OP
81 posts
 
Here's the real problem from an email interchange with an OPPO tech. 

After I installed the EDID emulator, and the system worked, I emailed OPPO tech services with my solution to the dropout problem.  OPPO replied that they were aware of the dropout problem - and then went on to explain the real problem. 

The REAL problem is that the OPPO player is polling the display for a high-bandwidth digital content (HDCP) copy protection response.  When the set is "OFF" it will not respond to the OPPO query - and the OPPO drops 2-3 seconds of music because there is no response.

In the email, OPPO tech services said "We hope to fix the problem in a future firmware update."    Well, "hoping" and knowing how to fix something are completely different - as "hoping" has no fixed date and no promise that a solution will be forthcoming.

If you want to actually fix the dropout problem, you can leave the display turned "ON" and it will respond to the OPPO with the HDCP information.  When that happens, no dropout will occur.

If you want to listen to music with the display "OFF" - then the solution is the EDID emulator between the OPPO and the display.  In my case, I inserted the EDID emulator between the McInstosh MX122 HDMI output and the Sony display.

The Atlona EDID emulator is 4K compliant and does not affect the image quality.
gdhal's avatar
gdhal
1,641 posts
 
It does so much so well. You would think that while the units offer a "Pure Audio" mode, that it would remove any "video feed" from the circuit.... in effect turn the HDMI portion off.

@nutty

Just so you are aware, *if* the 105D pure audio mode functions identically to the 205 (and I believe it does), in Oppo’s "defense", they do clearly document that pure audio mode does NOT shut down or otherwise remove the video feed, deactivate the HDMI port, etc. Instead, what happens is that a "black" screen is transmitted via HDMI. That said, I agree with you that ideally - and assuming there is no technical reason this couldn’t be the case - the video should completely shut down and act as though nothing is connected to the HDMI port.
marylander
1 posts
 
Good thread--thanks. Buckhorn’s use of the the Atlona emulator in this case is good to know about. Although perhaps not a "solution," my way of handling the cd-interrupting handshake between the UDP-205 and my Bravia is to turn on the tv and select Action Menu--> Picture Off from the remote--no interruptions to playback then and dead black screen on the monitor.

I had a problem with digital playblack truncation over HDMI at the beginning of cd tracks with my BDP-103 and Cambridge Audio 651r very similar to what dweller describes above: Cambridge now calls this little lapse "expected behaviour," but it is certainly not menioned in the manual any more than the Oppo/Sony concern can be found in a manual from either of those manufacturers. No solution to be had there but analog playback, which I found to be a pretty unhappy avenue with that player compared to the 205.

Whatever would we do with all our free time in a perfectly synchronized world?
don_1's avatar
don_1
94 posts
 
@GDHAL: thanks for the contact person you listed regarding the 205. I sent him an email
gdhal's avatar
gdhal
1,641 posts
 
You’re welcome @don_1
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