The NAD T775/T785 AVRs w/ HDMI 1.3 Thread! - Page 123

Welcome to the forum The only time I have had this occur is when I forgot to turn off speaker B which I have connected to speakers out on the deck or left a headphone 1/8 to 1/4 adapter in the headphone output. Check to make sure "A" and "B" are not both turned on.

ok, I think you probably got it straightened out when checking all your connections. Audyssey didn't fix it for me as I said it failed when it didnot detect the right surround speaker (no test tone could be heard).

Checked it at lunch and B speakers were on. Must have hit them inadvertently on my way to bed last night. Thanks for the tip.

I know this may seem far fetched but years ago I lived in a place where I had to run my speaker wires under the house and then up through the walls from underneath. To make a long story short, I eventually found that a mouse or ? had chewed one of the wires in half! I'm not saying you have rodents but if your speaker wires are hidden in anyway there could be an interruption there. Is it possible to do a test with an ohm meter to see if the wiring is whole? I know its a long shot but I remember it took me forever to find that in the situation I had back then.

yeah but if I switch that speaker wire to the left surround terminal, then I get sound. So there is nothing wrong with the wire.

Oh! my bad, I must have missed that. I don't know, all seems to be pointing toward the board at this point.

Spoke to Saturday Audio, they said they had same problem with a T175 where the firmware wasn't completely installed properly. I said I reinstallled wha NAD sent me but we will see. The person who fixed the t175 will be in tomorrow so I will know more then.

update: Not sure if they installed firmware incorrectly, even if they didn't, I think I did. They want me to bring it in to Sat Audio, but that may be awhile before I can get down there.
I'm going to see if there's a NAD engineer I can debug with over the phone.

I've dealt with the stereo downmix issue in the past with a factory reset. More recently I've been dealing with the right channel cut out with a factory reset, but then as soon as it looks like a factory reset - and a nice long rest with the power off - has done the trick, the T775 catches me in a pincer movement with the stereo downmix issue again. This receiver is exactly the same age as my three-year old toddler and twice as temperamental. Fortunately the machine can be sent to the shop for rectification.

Hello all,
I'm considering the T775 (and maybe the T765). The manual is ambiguous. Does anyone know if these units will post process a 5.1 Dolby True HD/DTS Master Audio stream to 7.1? Does it matter if I get one of the upgraded boards?
Also, have read a bit about an issue with a delay in locking digital signals, leading to songs not playing right away. Is that an issue with these units? Do the upgraded boards make a difference?
Thanks!

I emailed Oppo about the occasional problem I see where if I try to play a cd and the tv is not on, I don't get any sound although the display on the Oppo-93 shows the elapsed time moving. Oppo is connected via hdmi. If I turn the tv on, the sound comes on. I assume the hdmi handshake with the tv also kicks in the Oppo too. Oppos suggested unplugging the hdmi out to the tv and see if I can reproduce.

I'm more suspicious of the NAD vs the Oppo and wondering if anyone else has seen this?

Doesn't happen every single time but have seen it often enough. I usually always have the NAD powered on, then I switch the input to the Oppo and then turn the Oppo on.

Update: Unplugged the hdmi to tv and turned on the Oppo and sound came on with no problem (didn't try it multiple times though). Plugged the tv hdmi back in and turned on the tv while the cd was playing. Audio got interrupted during hdmi handshake with tv as expected but then audio stayed off, If I hit stop and play then the audio came back.

I'm going to try this with a Panasonic BR and see if the same thing happens so I can see whether it's a NAD or Oppo problem.

thanks

Tried one more thing to debug as suggested in nosferatu2xlc's earlier post. I connected the surround preouts to a tape deck and watched the signal level meter on the tape deck while recording. Both R & L channels were getting a signal but no sound on the speaker. I even went into the NAD speaker level menu and cranked the right surround to +12 db, The tape deck level went off the meter but no sound on the speaker. So not sure if that means the amp for that channel is the guilty culprit? Guess it could still be some type of connection from the DSP to the amp?

If you did not have this issue before the upgrade then it may have been introduced during the upgrade. May be something came loose. Also, did the upgrade fix your other problems?

Phil, I too own an Oppo the 83SE, > NAD T785HD> Pioneer Elite Plasma and I have never had a problem like you describe. I use a Harmony one remote with "Play CD" as a one of the selections. When this is activated just the Oppo and the NAD turn on with out any problems. I must go on and say though I have this set to for the Oppos' 2 channel output into the the CD input on the NAD. But I have found even if I switch to the Oppos' HDMI output I do not have the audio not being output with TV off.

I have heard of this being a problem with other units and brands too. Some have this problem others don't. I guess I should count myself lucky.

thanks, which video card do you have in the NAD? Also do you have any sequencing with delays programmed into the Harmony? Like does it turn the NAD on first, wait a few secs then turn on the Oppo?

Didn't really have any problems before the upgrade. The problem with the right surround happened about 1 month after I got the vm150 and am200 installed.

I have the VM 200 card that came with the receiver. I have mine set up kind of differently I suppose. I have on the remote "Watch Blu-ray " selecting this activity turns the NAD on first, a slight delay, then the Pioneer next, the menu for the Oppo is displayed on the remote but The Oppo is not on. I just select eject and the Oppo turns on, the tray opens ready to go. To "Listen to CD" the receiver is turned on first a slight delay and then the Oppo is powered up. This all works well for me.

I have found that, for what ever reason the NAD is turned off while watching TV when you turn it back on it will not display a picture until you turn the TV off and then back on. The handshake issue again.

I must be lucky, but I don't have any handshake issues whatsoever except for the following: I have an iMac connected using Mini DVI to HDMI to NAD T775 and it connected to an Epson 1080UB projector. Sometimes, if I have the receiver on and not the projector, the iMac thinks it is connected to a 720p display but then when the projector comes on, I just select 1080p from the top menu bar on the iMac and then it syncs up at 1080p. With my sony s5000es blurry player or PS3, I have NO issues.

From Oppo support :
If the player is trying to handshake with the television, and not with the receiver, then then this will result in no audio or stereo audio only. This is why we had you remove the television completely from the receiver to ensure that the player is negotiating all handshakes with the receiver, not the television.

Ensure that on the NAD the receiver is set to HDMI Audio of AMP and not THROUGH. If there are any settings for ARC or being able to send HDMI audio to your television, disable these.

I disabled ARC and so far no audio problem.

Phil how did you disable ARC? I went into the NADs' manual and did not see any option to do this. I have no speakers attached to the Pioneer and have its audio muted. I do not have any problems now but would like to know how you did this just for the sake of knowing and future reference just in case.

For ARC, you need VM150 (HDMI 1.4). I believe that menu appears in the setup once a VM150 is installed and the firmware updated. I would assume you can also turn it off on the TV side (assuming it supports ARC). For me, my projector is HDMI 1.3!

I've got a T763 which has been in repair for 7 months now. I wonder what's the equivalent on the Tx5 line power-wise if i am only using 5 speakers + subwoofer only; my T763 has the toroidal transformer and is rated at 6x100W. I also wonder if I'd trade 1 world of repairs into another, newer world of repairs...

Correct, on the vm150 there is a HDMI setup menu for all the 1.4 hdmi options like ARC. My Sony HX929 does not even recognize the NAD when I tried to get ARC to work; maybe that's part of the handshake problem.

And there is no manual showing this until they incorporate the vm150 into the next generation. I thought they should at least provide some kind of incremental update with the cards.

Gotcha, As stated I have the VM 200 card, no HDMI 1.4 here, and no need for it...yet.

Update: Now that the NAD approved repair shop gave up and NAD took over the repair, things are moving a lot faster than I expected. I shall get my T763 back, repaired, according to NAD staff.

What problem did you take it into repair for? How old was it?

Sorry I realize this is the wrong thread to be talking about my T763, my question was related in case I wanted to move to the Tx5 series in case they could not repair it. [Moderator, you could split this off on its own thread]

I had a weird noise coming out of the speakers even when source material was stopped. I was not a hum or hiss, the tone was changing all the time so it was quite distracting. At high enough volumes you might not hear it, but it was heard pretty much all the time.

The NAD & NAD dealer recommended independent repair shop tried many things, at one point they gave it back telling me it was fixed and at my home it failed Red LED within 30 minutes of normal volume listening, then some components inside catched fire when I plugged it back on to make sure it was still Red LED before returning the unit to the repair shop. This month being about 7 months since I left the unit to the repair shop, the repair shop likely asked for more help and the NAD rep took my unit back to NAD headquarters. I emailed NAD with my contact info and history and they replied promptly acknowledging they had my unit and making it a priority. Things seem to be moving quite faster now since NAD took over. If they had problems supporting the repair shop then, they are trying to do the right thing now. Both the repair shop & NAD have been very professional so far, I am crossing my fingers that my unit will not be a fire hazard when it gets back repaired.

I like to write little update about my T765 Channel issue . Well the unit its at a Service center for 2 weeks already , every time i call its seems that they don't know much about what the issue it. I even forwarded them the video i made of the issue . Before i send out the unit i was told the the turn around its about two weeks , well its been over two weeks and no word on if they even found the source of the issue. How long can i expect for this to go on before NAD gets involved ? I need my AVR back my speakers are lonely....

Has anyone added an amplifier to their 775HD to improve the SQ and power of their HT system? I just bought a pair of Salk HT2-TL speakers and I'm now wondering what they would sound like with an 3, 5 or 7 channel amp working with the 775HD.

Just curious if anyone has gone this route and what amp you matched the 775 to and if your happy.

Thanks
Jim

Hi Jim,

You really shouldn't have to use an outboard amp. It won't improve the SQ at all, it will only increase volume/headroom if it's needed. Is you amp running out of steam with your current setup (room very large)? The amp portion of the NAD receivers are equivalent to stand alone amps of equal power. If you add and amp with twice the power, it will only give you 3db more.

Just remember though, if you are operating within the specs of the NAD receiver (which you most likely are) adding an outboard amp will not improve the sound, but you can try it if you want. IMHO.

Have fun!!!

Ray

Ray,

Thanks for your input. I should think back and revisit why I bought the 775 and it was for the reasons you highlighted. I didn't want a seperate amp so at the time I thought the NAD was the best value out there for what I was looking for. I may borrow an amp someday just to see but no, my room is only 14 by 20 and I don't play anything loud so I probably have exactly what I was looking for. I don't have any complaints really.

One thing I don't like and maybe this would be the same with any receiver but when I switch from 5.1 to 2 channel and watch TV through my Cox digital cable box I only get stereo downmix which doesn' sound good in my room. And as I said maybe that is all I would get from any receiver with TV and digital cable box using HMDI cable. But I only went to 2 channel to see what it sounds like. Definitely better in 3.1 or 5.1 mode.

Jim