Wanna Fix JVC's digital audio dropout/video freezing problem? - AVS Forum
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post #1 of 14 Old 01-30-2002, 11:17 AM - Thread Starter
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In the press article about D-VHS today, the name Jerry Barbera appeared.

"JVC is hoping to sell 100,000 D-VHS players within the first year, according to consumer video
division VP Jerry Barbera"

I called JVC's HQ in Jersey 800-526-5308 and found out his extension is 5097. However, he's out of town for a few weeks. His secretary has agreed to receive emails from me (presumably from other D-VHS owners) frustrated by the constant digital audio dropouts and sometime video freezing of digital recordings (HD or SD).

The email to use is kcasper@jvc.com

She has promised to foward the emails to appropriate engineers.

Someone claimed the audio dropout problem is on all of the US and Japanese models, I think JVC should be made aware of this and a fix should be produced.
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post #2 of 14 Old 01-30-2002, 10:38 PM
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I recently purchased the JVC 30000u and have not had a chance to record HD yet (shortly): I thought that this unit was the current model, sounds like I may have a bug then. So what is the 35000 model, the fix?
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post #3 of 14 Old 01-31-2002, 07:37 AM
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35000 is the model from Japan

dave
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post #4 of 14 Old 01-31-2002, 04:43 PM
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Quote:
Originally posted by jlin
In the press article about D-VHS today, the name Jerry Barbera appeared.

"

Someone claimed the audio dropout problem is on all of the US and Japanese models, I think JVC should be made aware of this and a fix should be produced.
The audio dropout problems exists on both the 30000U and the japanese 30000/35000 model but ONLY when playing ATSC tapes. The AAC audio on BS tapes is absolutely stunning and perfect. Never a drop out in over 200 tapes.

This problem is obvioulsy related to Dolby Digital bitstream incompatibility with the JVC/Victor of some kind.

Bernhard
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post #5 of 14 Old 01-31-2002, 05:20 PM - Thread Starter
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I *think* I've heard it during CBS's telecasts too.. not sure.
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post #6 of 14 Old 01-31-2002, 05:26 PM
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The audio problem is not an issue on any of the japan decks going back through the firewire into the dtc100

dave
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post #7 of 14 Old 01-31-2002, 05:29 PM - Thread Starter
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So maybe you have isolated the cause of the problem so we can tell JVC that?
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post #8 of 14 Old 01-31-2002, 05:59 PM
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DST50 has the same issue.

dave
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post #9 of 14 Old 01-31-2002, 06:09 PM - Thread Starter
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I have two DST50's.. never had a single dropout on the same Dolby receiver I use.
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post #10 of 14 Old 01-31-2002, 09:02 PM
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Quote:
Originally posted by h2ofun
DST50 has the same issue.

dave
No those are 2 different kind of dropout problems. One kind is caused by the receiver if it doesn't have a cyrus logic dolby processor.

The other type is caused by the JVC/Victor deks playing ATSC tapes.

Bernhard
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post #11 of 14 Old 01-31-2002, 09:15 PM
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All I know is talking to Richard, he can look at the chips in a product and say right away which ones on playback will have the audio problem. If I play a tape from the JVC and use it's analog outputs, I beleive, this is where people are having issues? All I have seen is if you take the I link into the DTC100 and let it do its work on the audio and video, the audio problem has been eliminated? Do I have this wrong? Can I test something since I have access to both the US and Japan 30000's?

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post #12 of 14 Old 02-01-2002, 02:20 AM
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Quote:
The other type is caused by the JVC/Victor decks playing ATSC tapes.
Not all of them: no drops with CBS OTA tapes. Perhaps because they are only DD 2.0?

And the drops differ in nature: with HBO and Showtime movies, there is just a lack of sound from time to time.

With ABC 5.1, there is an annoying loud pop instead.

Robert
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post #13 of 14 Old 02-01-2002, 07:56 AM
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This sounds strangely reminiscent of the exact same issues we had with the Panny combo early on. It was found to be an incompatible dolby decoder software being used in some receivers. The dropouts occur in the decoder, not on tape. Thise found to be related to the tape can be determined by the fact that they happen in exactly the same place on every playback, while those occuring at random with the tape time are the cause of the software issue in the decoder. The solution was to use a known decoder that has the correct software. The one found to be a cost effective solution was the Techniques SHAC155 selling for about $175 street. It solved all my audio dropout issues as my Denon5700 was one of the receivers using incompatible dolby software. Even Dolby verified this.
Later on 169Time modification was able to also correct the audio dropout problem in a consistent manner. So, it would seem to me you have two choices to fix the problem for starters.

If someone out there has the JVC deck feeding a Techniques decoder now and still has the problem than this is obviously a different issue.
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post #14 of 14 Old 02-01-2002, 08:30 AM
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I agree 100% Don. So is anyone using Don's solution and still having the audio issue. That would be real interesing if so.

dave
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