Bad DVD destroys my JVC A/V Receiver

[Lexterra]

I was wondering if anyone had a solution to this problem. I've had a number of bad DVDs from Netflix, but as a patient person, I can send it back and report the problem. But the last bad DVD caused a bunch of loud pops while it went into freeze mode. 4 of the 5 channels on my JVC A/V receiver are shot now. An inspection of the DVD surface shows that it looks like someone took a brillo pad to it. Previous DVDs looked like Edward Scissorhands was the last renter.

I will be shopping for a new receiver anyway, but I don't want to blow the new one with another bad DVD. I presume that links from DVD players to receivers are digital (I know I've got an optical cable for my setup), so in-line filters won't work. But do the newer receivers have better protection from amp-draining pops? Or is a better DVD player the solution?

I've heard that some people have had a lot of bad luck with the poor quality of Netflix DVDs and that better players solved some of the problems. Thoughts?

 

[shokhead]

Never heard of a Disc blowing a receiver.

 

[anamorphic96]

Very strange indeed. Im thinking something else is wrong with your system. How loud are you playing movies ?

 

[WndrBr3d]

Errors with the digital audio stream would not result in 'pops'. When demuxing the VOB container from the DVD, it uses a single bit parity and ECC within the data packet to verify the data from the disc is being decoded correctly.

Improper data is not sent and further than the decoder if the packet is bad. That's why on scratched up DVDs, the video will start to 'smear' (because it's dropping P, I or B frames) from the MPEG Video, or in audio's case, it will simply cut out.

I suspect the error was within either your DVD player, or more likely the culprit, an aging/broke DSP within your receiver.

Just wanted to dispel anyone from thinking a scratched DVD could do this.

 

[j_garcia]

How about checking them before you put them in? I started checking the discs at Blockbuster before I leave the store due to having discs that were so badly scratched they wouldn't play.

 

[1khpsupra]

I do the exact samething, Blockbuster actually keeps track of people returning defective cd's. I rented two quite awhile ago and when I returned both being defective they looked up the last renters. I asked them why and was told the put some type of tracking identification on the customers account. I check them now and make sure they are not scratched, saves me time of running back to BlockB. I have never had a dvd cause audio feedback, only hang or skip frames.

How about checking them before you put them in? I started checking the discs at Blockbuster before I leave the store due to having discs that were so badly scratched they wouldn't play.

 

[mtrycrafts]

Errors with the digital audio stream would not result in 'pops'. When demuxing the VOB container from the DVD, it uses a single bit parity and ECC within the data packet to verify the data from the disc is being decoded correctly.

Improper data is not sent and further than the decoder if the packet is bad. That's why on scratched up DVDs, the video will start to 'smear' (because it's dropping P, I or B frames) from the MPEG Video, or in audio's case, it will simply cut out.

I suspect the error was within either your DVD player, or more likely the culprit, an aging/broke DSP within your receiver.

Just wanted to dispel anyone from thinking a scratched DVD could do this.

Some components do not properly mute the audio, or fast enough, when signal is lost or interrupted, a pop is the result. Perhaps if his system is set really loud but that would cause speaker damage, not receiver, or shouldn't.

 

[j_garcia]

Some components do not properly mute the audio, or fast enough, when signal is lost or interrupted, a pop is the result. Perhaps if his system is set really loud but that would cause speaker damage, not receiver, or shouldn't.

There's another part to that though, if the receiver does mute during interruptions in the digital stream there are times when it will actually cut off part of the sound when it restarts or starts a new portion of the stream. This was a common problem with many receivers a few years back where they would chop off the first half second of sound during layer changes, switching DVD menus and even chapter skips. This prevents the "pops" that can occur but creates another issue that is potentially just as annoying but not harmful. That was one reason why I upgraded from my Marantz 6200.

 

[WndrBr3d]

Some components do not properly mute the audio, or fast enough, when signal is lost or interrupted, a pop is the result. Perhaps if his system is set really loud but that would cause speaker damage, not receiver, or shouldn't.

If a DVD player still proceeds to process a data packet from a DVD even though it has failed party and could not be reconstructed using the RS error recovery, then it is not conforming to specifications.

A perfect example of this is a DVD that has a bad frame because of data error causes the screen to 'distort' until the next key frame.

But, lets say for isntance the DVD player did send out an incorrect data packet, the pop was probably caused by the DAC, I'm willing to bet. A lot of DACs in high end audio equipment have 'anti-pop' routines.

 

[mtrycrafts]

There's another part to that though, if the receiver does mute during interruptions in the digital stream there are times when it will actually cut off part of the sound when it restarts or starts a new portion of the stream. This was a common problem with many receivers a few years back where they would chop off the first half second of sound during layer changes, switching DVD menus and even chapter skips. This prevents the "pops" that can occur but creates another issue that is potentially just as annoying but not harmful. That was one reason why I upgraded from my Marantz 6200.

I suppose it's tought to balance these two, no loss of info and no pop