Originally Posted by DoctorFouad
I own a CA751 and while the sound quality is great I am still encountering very annoying problems with sound dropping/cutting several times while watching TV/youtube videos + 1-2 seconds delay of sound whenever I play a new file (audio or video). Some youtube videos are just unwatchable with this receiver, you just cant hear anything, it cuts every two seconds.
Do you know if a new firmware solved thiese problems ? or if the new v2 of 751 solved these sound dropping/cutting/delayed issues ?
I would be grateful for your help. thank you.
Hello. Old post but I believe I may be able to help you or anyone else who may be experiencing persistent HDMI issues, at least when a PC is connected as a source for audio/video files. Want to share my experience and give a little back to this awesome forum.
My setup is DishNetwork into HDMI 1, and a Win 7 64 PC with NVDA graphics card (GT 460) into HDMI 2 (using Kodi/Foobar > USB/VLC Media Player interchangeably for movies and music).
HDMI goes out to a 55" HDMI TV (old Vizio XVT553sv, if it matters).
Here were my problems, followed by a solution that so far works to perfection (knock on wood):
Playing PC movie and then switch to music (perhaps staying within Kodi for each), intermittently the video would remain but sound would drop, and less often the screen would go black with audio remaning, never both out, OR when switching from PC to Dish Network, would most often lose sound.
I would toggle HDMI sources to see if it would fix (re-establish a HDMI handshake?) but often no audio would play at all, not out of USB, no AM/FM Radio, nothing. All audio would be out and the only thing to do would be to restart receiver, and all would be well again.
Additionally, on two occasions I heard a “click” from the receiver when switching sources, and I am pretty much certain it was always when changing FROM the PC to the TV, but not 100% certain.
Solution: I eventually sleuthed and learned that it might be related to a EDID issue from the TV, its failure to communicate back to the PC, possibly sending a mixed message of sorts to/through the 751R V2 (beyond my comprehension), and I stumbled upon MonInfo, a freeware program that emulates and creates a new INF file (video driver file) to replace the generic one in Windows 7 (Device Manager, Display, Properties, driver update, etc.).
Don’t laugh! Once I had the PC/751/Dish working fine I saved the INF file and loaded it as a new driver and it worked! You can always roll the driver back to the prior driver if it failed, but I have been trying to recreate the problem and it is rock solid, switching around to my heart’s content, no issues.
Some way, somehow the HDMI EDID/HDCP handshake from PC to TV must be corrupting/confusing the 751R, maybe causing it to go into a protection mode, causing the drops, but now works to perfection.
I don't think it's luck, because it is clearly working.
Maybe this will help keep another from pulling their hair out.