Audio drop out, dvd player or receivers fault???

Lane F.

Stunt Coordinator
Joined
Aug 14, 1999
Messages
184
I have a Pioneer DV-C503 DVD player and a Sony DA50ES Receiver. Recently when watching some DVD movies the sound will just randomly cut out completely. The blue light (tells me it is receiving a 5.1 signal) on my reciever will turn off and it will default to prologic mode, but there is no sound. Sometimes after a few minutes pass the sound will kick back in and the blue light on my receiver will light up again. I have the dvd player hooked up via a digital coax cable. I have checked the connection, and it is very snug. What is weird is it did this for the first time last week, but I didnt think much of it. But since then it has done it more an more - all at random points in a movie. I was just wondering if anyone has experienced this issue, and if you think my dvd player is dying, or the reciever...
 

Bob McElfresh

Senior HTF Member
Joined
May 22, 1999
Messages
5,182
This sounds like what happens when people use a audio RCA cable for the coaxial digital connection. Random drop-outs every few minutes.

Go to Radio Shack or Best Buy and buy a simple VIDEO cable and try this for the coaxial digital connection.

Audio cables can be made with 50/75/110/300 ohm coax and all work fine, but video & coaxial digital cables MUST be made with 75 ohm coax. (and hopefully the connectors are close to 75 ohms as well).

Let us know if that fixes the problem.
 

Bob McElfresh

Senior HTF Member
Joined
May 22, 1999
Messages
5,182
So I personally do not adhere to this theory that a digital coaxial cable must be 75 ohms.
This is not a theory. This is a requirement of the Sony Philips Digital Interface Format (SPDIF) that defined the coaxial digital connection on every DVD player.
You are using a CD recorder. That is not a DVD player. While it IS a digital output, the signals are PCM (Pulse Code Modulation), not Dolby Digital. The higher-speed DD signals are more sensitive to the cable than PCM signals.
And you may be getting away with it because many audio cables are made with 75 ohm coax. (Wish they would label the darn things.)
Lane: a trip to BestBuy/Radio Shack to buy a video cable is still recommended. Sometimes a cable is damaged or the quality control on the connectors is not what it should be.
 

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