I am transferring my post from another thread, when it was proven that the player is wrong, not the receiver.
It is about a strange and annoying problem, the facts are as follows:
For 7-8 years I am an owner of Denon AVR-3808A receiver and Denon DBP-4010UD player, both bought and located in Europe. This combination worked (and works) like a charm, coupled with 5.1 set of serious speakers.
Recently I upgraded the receiver firmware via Ethernet and all seemed well after that, till I played some Blu-ray discs on my 4010UD and saw that BD audio stream is not sent as a bitstream signal to the receiver. Whatever I choose from the disc audio menu - Dolby True HD, DTS-MA HD, Dolby Digital or DTS, everytime the receiver shows PCM MULTI CH IN - no digital stream decoding.
The player is set to BITSTREAM and the receiver is set to INPUT - HDMI. There is only one HDMI cable between the two components - no other connections.
I replaced the HDMI cable, tried another HDMI socket on the receiver - no result. Whatever BD disc I play, whatever audio option I choose, I see only MULTI CH IN and receiver display "Audio input signal monitor" shows a 48kHz PCM 3/2/.1 signal is coming in.
Resetting the both units to factory defaults and manually configuring them did not help either.
This fault is present only with Blu-Ray discs. All other audio and video discs and digital audio formats work OK - DVD discs in DTS 5.1 or DD 5.1, Super Audio CD, DVD Audio, DTS audio CD, etc.
Comitting some tests with another BD player, with the same HDMI cable and same receiver settings, all worked just fine - I saw at last Dolby TrueHD and DTS-MA shining on my receiver's display, nomore PCM Multi Channel In!
Switched back the same HDMI cable to 4010UD and the MULTI CHANNEL IN problem re-appeared. In fact the player keeps on decoding and doesn't send a bitstream signal to the receiver when playing Blu-rays, whatever I set. This is not a proper behaviour.
I don't know, recently I cleaned the player lenses and readability was much improved. The next step is to replace the optical unit of 4010UD - cheap and easy option.
Any advice or help would be highly appreciated, I really have no idea why there is no Bitstream signal anymore coming out with Blu-Rays played on my Denon DBP-4010UD.