We got a new flat screen TV about a month ago (Sharp Aquos 40" LED), and I’m having trouble getting the audio configured the way I want it, so I’m looking for suggestions.
First attempt: I had an HDMI connection from the cable box to the TV. I had a digital audio connection from the cable box to the surround sound receiver. When hooked up this way, the TV picture is about half a second behind the audio.
Second attempt: I removed the digital audio out from the cable box and ran the audio from the TV to the receiver instead. Now the sound is in sync, but I don’t get surround sound - only stereo. I looked in the manual for the TV and it said that I should be able to select between “PCM” and “Dolby Digital”, but I don’t see that option in the menu anywhere.
I went to Sharp’s website to see if there were any support FAQs for this product. I found a FAQ with the question “Why can’t I get Dolby Digital sound on my TV?” The answer is “You can only set the audio output to Dolby Digital when the input is on TV.” In other words, if I’m using HDMI, no surround sound.
So, third attempt: I run a coax cable from the TV out on my cable box to the TV. Yay, surround sound and it is in sync with the picture. Except, apparently, my cable box doesn’t output an HD signal through the coax output - it’s only a SD signal.
So I seem to be screwed here. I can have a hi def picture that is out of sync with the surround sound, or a high def picture that is in sync with stereo sound, or standard def picture with surround sound.
A couple of side questions: is it normal to have a delay with HDMI? My old HDTV was old enough that it only had component video, and I never had the problem with the audio out from the cable box being out of sync. Also, is it normal for an HDTV to not have surround sound output from the HDMI inputs? Should I have gotten the LG or Samsung instead?