XMC-1 Turn off Video leave audio an HDMI Input [NOT SOLVED!]

[novisnick]

May 16, 2017 17:19:25 GMT -5 jmilton said:

Well bust my buttons! I'll file that in my memory bank🙂

Aren't you overdrawn? 😋

[thezone]

Hi Everyone,

This issue has come back again the "Audio Only" HDMI from the Panasonic DMB-UB900 UHD BR Player is again intermittently causing the XMC-1 to shut off the audio path which causes the triggered amp to click off. It is occurring with both 4k and Standard Blurays. Interestingly, if I let the BD play, the XMC-1 triggers the amp on and off over 2 or 3 minute intervals but the whole time the XMC-1 is basically 'frozen' and needs a hard restart to restore any audio. Strange how upgrading the Panasonic firmware seemed to fix the issue for a few plays but it has reverted back with the issue occurring intermittently.

At this point I don't know if its the Panasonic or the XMC-1 causing the issue, the XMC-1 was having freezing issues prior to getting the HDMI board replaced and I don't have another receiver to check the Panasonic and my HTPC has the same 2 x hdmi outputs and this works flawlessly.

I guess I'll have to take the Panasonic back to where I bought it and go from there.

[cwt]

May 19, 2017 23:29:17 GMT -5 thezone said:

This issue has come back again the "Audio Only" HDMI from the Panasonic DMB-UB900 UHD BR Player is again intermittently causing the XMC-1 to shut off the audio path which causes the triggered amp to click off. It is occurring with both 4k and Standard Blurays. Interestingly, if I let the BD play, the XMC-1 triggers the amp on and off over 2 or 3 minute intervals but the whole time the XMC-1 is basically 'frozen' and needs a hard restart to restore any audio. Strange how upgrading the Panasonic firmware seemed to fix the issue for a few plays but it has reverted back with the issue occurring intermittently.

I wonder if what Keith describes here vvv is whats causing your audio dropouts and consequent power amp reboots ?

We have run into one interesting situation which may have bearing on what you're experiencing here......
A certain customer had his Oppo player connected to his XMC-1 for audio and his TV for video (with the Oppo set to "dual outputs").
He experienced audio dropouts, even when playing ordinary audio CDs - but only when his TV was off.

As it turned out (according to Oppo), when his TV was off, its HDMI input "still signaled that it was on".
As a result, when the TV was off, the video HDMI output on the Oppo would repeatedly try to negotiate HDCP with the TV - and fail.
And, each time the negotiation recycled, the Oppo would experience a dropout in its audio output....

If you have another lcd etc to try its edid may behave differently . Another option is the current hdmi 2.0 1 in 1 out card though you would lose any HDR but that's ok for certain projectors ; hopefully the hdmi 2.0b card is coming soon ..

[vcautokid]

Yep HDMI love. Can't live without it. I don't sweat it much. It was created by aliens.

[thezone]

I have an old Panasonic Plasma and the issue is the same, If the hdmi handshake issue exists as per Keith's explanation I have no way to cure this as its an issue with lpcm and bitstream the more I think about it the more this makes sense, there is clearly a non relevant video singnal on the audio only hdmi cable and this is most likely the cause, it fits the pattern of how this behaves. Looks like I might have to put up with it until the new HDMi board arrives.

Thanks everyone

PS I updated the XMC-1 to 4.1 firmware but this didnt help, Was worth a try : (   

May 20, 2017 4:30:16 GMT -5 cwt said:

May 19, 2017 23:29:17 GMT -5 thezone said:

I wonder if what Keith describes here vvv is whats causing your audio dropouts and consequent power amp reboots ?

We have run into one interesting situation which may have bearing on what you're experiencing here......
A certain customer had his Oppo player connected to his XMC-1 for audio and his TV for video (with the Oppo set to "dual outputs").
He experienced audio dropouts, even when playing ordinary audio CDs - but only when his TV was off.

As it turned out (according to Oppo), when his TV was off, its HDMI input "still signaled that it was on".
As a result, when the TV was off, the video HDMI output on the Oppo would repeatedly try to negotiate HDCP with the TV - and fail.
And, each time the negotiation recycled, the Oppo would experience a dropout in its audio output....

If you have another lcd etc to try its edid may behave differently . Another option is the current hdmi 2.0 1 in 1 out card though you would lose any HDR but that's ok for certain projectors ; hopefully the hdmi 2.0b card is coming soon ..