No output from digital inputs on NAD T 773

hearingimpared

I set up my home theater Friday night and yesterday we were blown away with the system.

I have my Comcast DVR connected to the audio digital in #3;

my Oppo DVD connected to the audio digitial in #4;

the analog output of the Oppo to the audio analog CD in.

Yesterday we watched HD 5.1 and regular channelS from the DVR as well as movies from the Oppo.

Today my wife attempted to put the system to use and I now am getting no sound from the DVR or the Oppo digital sectionS. When I select the FM tuner and play an SACD from the Oppo it works just fine.

However. . . when I try the DVR and Oppo from the digital inputs 3 & 4 and when I run the test noise that runs noise through each channel for calibration, I get no sound at all. Yesterday I used that same test noise with an SPL meter to adjust the channels.

I've checked every connection thrice, I've check every setting in the OSD several times and I am just plain stumped.

Please HELP!

hearingimpared

No ideas, anyone?

McLoki

Assuming it did not just break (and that is possible - could be the digital in or DSP Board) - do you get sound from the analog ins? (I think you said CD input)

Have you tried both optical and coax digital in? Possible someone could have accidentally reassigned the inputs?

If you play a CD or FM radio - do you get output from your sub? (DSP Board)

The first thoughts I had anyway...

Michael

hearingimpared

McLoki wrote: »

Assuming it did not just break (and that is possible - could be the digital in or DSP Board) - do you get sound from the analog ins? (I think you said CD input)

Yes!

McLoki wrote: »

Have you tried both optical and coax digital in? Possible someone could have accidentally reassigned the inputs?

Nope, I don't have optical wires.

McLoki wrote: »

If you play a CD or FM radio - do you get output from your sub? (DSP Board)

Bingo!!! Yesterday, I had killer sound from the sub with the SACD or FM on. Now I don't get anything from the sub.

I think you might be correct about the DSP board going south. I think it is still under warranty. I have to check with NAD for an authorized repair shop.

Thanks Bro.

dudeinaroom

does your receiver/pre have a digital button that might have been bumped?

hearingimpared

Digital Button? I have been through this thing both hardware and set up wise and don't remember seeing a digital button. I do have an digital input button but I've always had that set to the proper input matching the external device.

dudeinaroom

for fun select one of you digital sources, and hit the button

danger boy

maybe one of your optical cables popped out of it's connector... they aren't very snug usually.

it's very tricky to keep all the audio and video inputs straight.. did you write them down.. i learned this the hard way..

now I write every input and output down on paper and keep in handy.

something like HDTV - component 2, optical 1, analog AUX
DVR - component 1, coax 1, analog CABLE
DVD player - component 3, coax 2, analog DVD

this helps instead of trying to remember now what is optical 5 again.

good luck.. now you've had a taste of how good HT can sound. congrats. hope you get it figured out. it's usually a setting issue is all. keep working at it.

hearingimpared

danger boy wrote: »

maybe one of your optical cables popped out of it's connector... they aren't very snug usually.

it's very tricky to keep all the audio and video inputs straight.. did you write them down.. i learned this the hard way..

now I write every input and output down on paper and keep in handy.

something like HDTV - component 2, optical 1, analog AUX
DVR - component 1, coax 1, analog CABLE
DVD player - component 3, coax 2, analog DVD

this helps instead of trying to remember now what is optical 5 again.

good luck.. now you've had a taste of how good HT can sound. congrats. hope you get it figured out. it's usually a setting issue is all. keep working at it.

I'm not using optical inputs.

I have the component video cables from the Comcast DVR to input 1 on the TV and the component cables on the OPPO on input 2 on the TV.

The digital out of the DVR goes to in of digital 3 on the NAD.

The digital out of the Oppo goes to in of digital 4 on the NAD.

The analog outs of the NAD goes to the CD in of the NAD.

The wiring has been checked and rechecked. The thing that really leads me to believe there is something wrong with the NAD is that when I hits "TEST" I get no white or pink noise alternately coming from the speakers.

I've even gone so far as to move the wires from digital in 3 and digital in 4 to 5 & 6 respectively and still no audio.

engtaz

On the Denon's, they have a audio input button on the remote that toggles between analog and digital inputs. Even if you select it correctly in the digital input sections of the on screen instructions it will not work until the audio input button is push to change from analog to digital or the reverse of that.

danger boy

if you're not using optical inputs.. are you using coaxial inputs then? i'm confused.. to get 5.1 audio you have to use some kind of digital cable. either coaxial or optical.

danger boy

on my Marantz receiver there was a button that had to be pushed to "turn on" the speakers.. otherwise i'd only get sound from the headphones.. try that.. plug in a pair of headphones and see if you get sound from like your DVD player thru them.

hearingimpared

Al,

I've written several times above about the digital ins that I am using. To recap, I am using Digital IN #3 on my AVR from the digital out of my Comcast DVR; the Digital IN #4 on my AVR from the digital out of my Oppo DVD player. So I am definitely using the digital inputs on the NAD. I've also made sure that Speaker "A" is in the on position, Speaker "B" is off. I even tried it with both of the on. . . still no audio.

Again, what really concerns me is that the TEST to calibrate the speaker goes on when the test button is pressed but no noise comes out of the speakers. This is the test I used the day before to calibrate the five channels with an SPL meter.

Polkitup2

hearingimpared wrote: »

Today my wife attempted to put the system to use and I now am getting no sound from the DVR or the Oppo digital sectionS.
Please HELP!

I've had the same problem

dudeinaroom

might it have been switched to 2ch/stereo mode by some chance. on some units if you switch it to stereo,analog,or direct it will bypass the digital section, and also give you no setup tone. just a thought.

hearingimpared

Polkitup2 wrote: »

I've had the same problem

Really? I spoke with Mike at NAD tech support today and it is a bad digital audio board. . . according to Mike this is an extremely rare case if ever. . . of course it happens to good old Joe on his first HT rig. Hey I need **** like this to keep the drama in my life fresh!!!:D

I have to get it to an authorized repair shop which it seems the closest one is 60 miles away in Baltimore. This friggin thing must cost an arm and a **** to ship it is so heavy.

engtaz

Joe,
I believe it is to keep us humble. The reason I believe this is because how else can my 3 cars all go down in 2 days. Humble is better then depressed. LOL

hearingimpared

engtaz wrote: »

Joe,
I believe it is to keep us humble. The reason I believe this is because how else can my 3 cars all go down in 2 days. Humble is better then depressed. LOL

Yep there is nothing like a true dose of humility. . . beats the heck out of humiliation!

It's beginning to look like the place I purchased this unit online lied to me. . . GEE WHAT A FRIGGIN SURPRISE! When I purchased the unit, it was supposed to be a new unit sent by NAD to replace a unit that had arrived with a bad channel. By the time the establishment received the unit, the Master Series was realeased and the fellow who was supposed to get the T 773 opted to get the new Master Series version. They sold this T 773 to me under the guise of new, in the box, full two year warranty. The fellow faxed me the invoice and the date on the invoice is 6/8/2005!!! Out of warranty. So I took a look at the packing slip that came with the box. The date is 1/19/2007 and in the notes box is written; "Based on RA# 329323. Please return defective unit(s) within 30 days to receive credit against this invoice."

This packing slip is what I am going to show the nearest repair shop (closest is 50 miles) that it is still under warranty. I am also planning on driving the **** to the shop. . . shipping weight on this biggun is 68 lbs.

I really believe that if I pop the top, I will find a loose or disconnected ribbon cable. What leads me to believe this is that when I first powered up the unit, I had picture no sound, . . . the next day while talking to Phil on the phone the sound miraculously came on. . .at that time I thought maybe I just hit a button on the remote by mistake. . . now I'm beginning to think it is an intermittent connection.

Now I just have to figure out a way to pop the top without breaking any warranty seals if they exist.

Any ideas would be greatly appreciated.

Polkitup2

Sorry to hear you have to send it in. When I said that I had the same problem, I meant with my wife - using my gear and then it doesn't work.:D
NAD has had some quality issues with their gear. I had a brand new C521BEE CD player that went out after a month. Took about 3 weeks to fix.

hearingimpared

I think they make some really great stuff that sounds and performs leaps and bounds above their price point but to keep that price point they have to make some short cuts on parts or else their bottom line plummets.

I always loved their stuff. I had two 2200s and two 2200 PE, several of their preamps and I bought their very first CD player back in I think 1985 or around that time. The only reason I don't own two 2200 PE now is that I couldn't resist the modded Adcoms plus the Adcoms could be strapped common ground but I still don't know if two 2200 PE bridged mono can be strapped. If they can I may seek out a pair to use in my office rig feeding CRS+s.

Polkitup2

I have the NAD C370 Integrated, the C270 amp, and an FM tuner in addition to the CD player. I really think they sound great for what they cost.

hearingimpared

I think Shack is an NAD lover. I would love to get one of their tuners although I had a late 1980s version of Bob Carver's holographic tuner and thought that it would be pried from my cold dead hands . . . I can't remember why I sold it but I must have been desperate anyhoo I really wish I had that back.

hearingimpared

Can anyone think of anyway a repair shop could tell if some one popped the top on a piece of gear.

I remember back-in-the-day manufactuers would put silver seals along the seams of the chasis that could only be broken once or they would use loctite on the screws and seams. I don't see anything like that now.

I want to open up this T 773 and take a look around but am afraid that if the warranty is still in-tact I'll loose it.

shack

hearingimpared wrote:

I think Shack is an NAD lover.

Well....I'm certainly fond of MY NADs.

hearingimpared

shack wrote: »

Well....I'm certainly fond of MY NADs.

. . . and I hope to get a good look at them at Polkfest!:eek:

Polkitup2

I must say my pair of NADs (C370 and C270) are quite intimidating at first site.