Hello community,
I just have received a receiver that I bought. Model is NAD T775HD, which had upgraded its audio board by a AM230 Digital Audio Board, and its video board by a VM300 Digital Video board. I have few problems, so if you can help with one of those, many thanks and kudos !
Most of my tests were run with a nVidia Shield Pro, hooked on AVR with a HDMI 2.1 cable, and all those issues weren't present before, with a Marantz receiver.
Problem #1 : AC3 (Dolby Digital) playback not working WHEN PRECEDED BY A DTS PLAYBACK (yeah, that's right!)
- All these tests are from Plex, an App inside the Shield Pro
- Tested both with and without HDMI passthrough (without, I only get dull PCM Surround)
- AC3 movie (MKV) playback is fine, logo DD light on the AVR
- DTS movie (MKV) playback is fine, logo DTS light on the AVR
- AC3 movie playback, followed by DTS movie playback is fine, DD logo is on, then goes off and DTS logo goes on
- DTS movie playback, followed by AC3 movie playback NOT WORKING
- DTS logo remains on
- DD logo lights on the AVR
- No sound at all
- AVR remains stuck in this state
- The only way I found is to play per se a Youtube video, which switches the AVR to PCM Stereo
Problem #2 : Dirac Live calibration impossible to get done
- I always get the error "Low signal-to-noise ratio"
- Followed instructions here : https://live.dirac.com/content/uploads/2019/05/dirac-live-quick-start-print-version.pdf
- Using the original mic, with the USB adapter and the stereo-to-mono adapter
- Tried with different MIC gains, from the bottom, to the max of the safe zone, to the max of the red zone
- Adjusted the individual speaker gains to make them just in the beggining of the green zone
- Have only activated the correct amount of speakers
- Have tested many Master output levels, including a very loud test
- Have tested the Mic in the NAD's USb port, the NAD's front Mic port (was not working at all), and in my laptop's USB port
- The only time where I got a result is when I used only my laptop Mic, but the results were pretty bad
Problem #3 : Cannot read FLAC files at all
- Playback is from Plex App, within nVidia Shield Pro
- Playback was working fine with my previous Marantz AVR
- On screen, playback starts, but no sound at all
- NAD does not change sound mode at all, as if nothing was detected
Problem #4 : Firmware update check get stuck
- When trying to look for firmware updates, it gets stuck in "Please wait" message, forever
- Network connection is okay because I can connect with the NAD using Dirac Live Windows App
- I can see the NAD's IP address
Problem #5 : Playback from Windows 10 always PCM Surround
- NAD does not change its sound mode, always PCM Surround
- Tests were done in Plex App, not within browser, since browsers doesn't handle 5.1
- Windows sound is configured in 5.1
- Windows detects my sound device as a NAD T775HD
- Hooked in HDMI, with a HDMI 2.1 cable
So... if you all read this so far, first of all thank you for your time. Now, you may understand that my user experience is not, my I say, pure pleasure.
Please feel free to refer to any of these problems and give your (positive, please) input !
Thank you,
Eric
