WD-TV audio issue - distortion/static - AVS Forum
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post #1 of 11 Old 08-14-2009, 10:46 AM - Thread Starter
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I have an WD-TV with firmware 1.02.07 connected via HDMI to my LCD.
Starting yesterday when I turned it on, I get severe audio distortion/static along with any sound (be it video, or music) with any files, even ones that played fine as of a few days ago.

I've tried a number of troubleshooting fixes to no avail:

-I've tried each of the two HDMI ports on my television (which work fine with my xbox 360)
-I've tried three different HDMI cables, including a brand new one.
-I've updated the firmware to the beta 1.02.10
-I've tried routing the audio to my cheap home theater (essentially cutting out the tv speakers, although I still have to run it through the TV since there are no audio inputs on my receiver)
-I've tried an external HDD, and a thumbdrive in both of the USB ports.
-I've deleted and reloaded media back onto each drive.

The only thing I haven't tried is using the optical audio output, since I don't have a receiver that contains that input.

Any ideas? It's sounding like the HDMI port on the WD-TV went bad, but what other options do I have?

Thanks.
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post #2 of 11 Old 08-14-2009, 12:59 PM
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Have you tried the DVD player to rule out it's a TV problem?

Also leave it disconnected form the mains for some time to allow it to cool off, could be overheating (not likely though if you have correct picture)...

Can't you take it to a friend with an aV receiver with optical inputs? Maybe take it to a AV shop to try?
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post #3 of 11 Old 08-15-2009, 04:49 PM - Thread Starter
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Thanks for the reply.

I hooked up the audio via stereo inputs going to my receiver and the sound was fine, so it's definitely something within the HDMI port on the WD-TV (as for the TV speakers, they work fine with everything else, so it couldn't be those).

After leaving it off all night, and coming back to it today, it seems to be working fine now. So maybe your hypothesis that it was overheating is correct.

Either way, thanks for the reply.
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post #4 of 11 Old 08-16-2009, 01:03 AM
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If you are using it in the horizontal fashion, try standnig it upright...seems it warms-up less that way...

or maybe all it needed was a true hard reset (disconnect form mains) like you just did...
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post #5 of 11 Old 09-06-2009, 05:14 PM
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I also have an WD-TV with some audio issues:

- I decided to buy this device specially for its ability to play flac music files.
- When playing flac music files I hear a distortion that is not present when playing the same files on my PC.
- The distortion is like "clicks" or "pops" that appear at random, often one to three per minute, sometimes also no problem during several minutes.
- The distortion is small, but annoying when you expect a pure sound.
- When playing the same flac file again the clicks do not appear at the same place.
- I did not yet notice this issue with mp3 files.
- My firmware: 1.02.07, upgraded from 1.01.xx. The issue is present in both firmware.
- Problem is similar either with a composite A/V cable or by using an optical connector to a digital amplifier.
- Problem is similar either with usb memory stick or HDD.
- Problem is similar either in horizontal or vertical position.

Conclusion: I suspect a defect, at least in some WD-TV. I hope that I can exchange my WD-TV with a defect-free one at my local store, or receive my money back.
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post #6 of 11 Old 09-07-2009, 12:30 AM
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try installing the 1.02.10 and see if that helped: http://www.wdc.com/wdtvprerelease/
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post #7 of 11 Old 09-07-2009, 02:03 PM
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Thanks for your advice. I will try soon the prerelease.
For the time being, I played today a mix of mp3 and flac tracks. I listened at a relatively low volume and did not hear distortion. But suddenly, more or less one hour after having switched on the wdtv, in the middle of a flac file the sound became nearly unrecognizable. There was a continuous severe distortion, nothing to do with the minor clicks I heard yesterday. Pushing the FF button for a few seconds, then Play, solved the problem for ten minutes, then the strong distortion started again.
I have a small hope it is just a firmware problem, but I rather suspect a hardware defect, like overheating or so ...
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post #8 of 11 Old 09-07-2009, 03:02 PM
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similar problems can happen with video files, namely mkv - it just starts playing in a jerky fashion, sound also playing in "staccato" style ...but only a file or two...a short tap on RWD then PLAY fixes this...unti next time
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post #9 of 11 Old 09-19-2009, 05:07 AM
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Hello guys
Also i tried this way.
I believe that the problem does not depend solely on temperature, infact if you play pause only one seconds and then play again, for about 8 minutes the sound is good.
On the other hand, the problem occurs even if WD TV has just been switched on.
May be a defect of our hardware. I wrote Wd several times but their answers have not helped me.
I suspect that the WD are aware, but unable to solve.

Have you tried contacting WD?

See you later
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post #10 of 11 Old 09-19-2009, 03:36 PM
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a new FW update may be out soon , be patient...at least there is the REW-PLAY solution, however uninvited and unnecessary the problem may be...
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post #11 of 11 Old 10-04-2009, 05:38 PM
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Some news about the flac problems:

I tested using firmware 1.02.10 and 1.02.11 : the audio clicks are still present.

For further investigation, I compared the audio wave of an original input FLAC file and the output from WDTV recorded via an optical connection. I found that the clicks are due to missing audio wave fragments of exactly 256 samples (about 6 ms). In my test file this error happens the first time at position 8:47, then about every 6.76 seconds. The interval between two successive errors is in fact a multiple of 256 samples : N * 256, where N has at random the following values: 1161, 1163, 1165, 1167. This is at least the result for the first 12 errors, as shown in the table below. I did not yet have the time to analyze a FLAC file corresponding to a complete CD, but I guess the error series continues until the end of the file. For an average CD this gives a total of more than 500 missing fragments, or more than 3 seconds ...

err# pos smp time
---- -------- ---------
01 23243142 08:47.055
02 23541382 08:53.818
03 23838598 09:00.558
04 24137350 09:07.332
05 24434566 09:14.072
06 24732294 09:20.823
07 25030534 09:27.586
08 25328774 09:34.349
09 25625990 09:41.088
10 25924230 09:47.851
11 26221958 09:54.602
12 26520198 10:01.365

Please note that the missing fragments in the output produce a more or less audible click depending on the audio signal difference before and after the gap. Some of the errors are nearly not audible. This explains my earlier impression that the clicks were totally random.

Discussing earlier with WD Support team, they replied they could not reproduce the problem. Now I submitted the above findings to them, and I hope they will find a solution.

I would be happy if somebody else could do this exercise with a long enough FLAC file: record the sound from WDTV via optical connection, and compare the output wave against the input, then check if there are missing fragments. For recording the WDTV output you will need of course a sound card with an optical input (I used a Terratec DMX6fire2496 device).
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