Panasonic ZT60 and VT60 Fan/Fridge Noise Production Numbers - Page 13 - AVS Forum
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post #361 of 1481 Old 10-13-2013, 12:18 PM
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The F8000 Samsung gets some very high praise for it's picture quality. Basically for me the major benefits are 10-inch of additional screen size and no fan noise issue to worry about. On the negative side, I'd be sacrificing some picture quality, though I don't know how much, since I've never seen the F8000 in person. I've always bought plasmas and never really considered LCD sets seriously. For sure I would lose out on the viewing angle, but then again, its just me and my girlfriend who watch the set and we sit dead center in front of our ZT60 (well, I sit dead center and she sits just to the right of me in our home theater chairs). My biggest concern would be the motion flow, especially when watching fast moving sports like hockey or watching an action movie. I know almost all LCD's now how some sort of setting to help with this issue, but the trade-off is often the dreaded soap opera effect. The projector option really has me intrigued, but as I said, my room is not a dedicated theater room that is light controlled and even the projectors have their plusses and minuses.
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post #362 of 1481 Old 10-13-2013, 12:20 PM
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I forgot to mention the biggest negative . . . . the $7,000 list price!
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post #363 of 1481 Old 10-13-2013, 01:44 PM
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Since a few days owner of a TX-55VT60E.
Not much noise but a high pitch tone when the set is on. I guess around 12-15 KHz.

Does anyone else has this experience?

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post #364 of 1481 Old 10-14-2013, 12:05 PM
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Just received my P60ZT60. #1614 May build and it has the fan noise. Going to get some computer fan dust filters tomorrow to see if that will do the trick. When I put my hands over the vents it drowns out the hum/whirling. The noise isn't as bad as I was fearing but, its still there. It will definitely bother me when watching dramas. Decent buzz noise levels, no banding, good uniformity. Not impressed with the back facing speaker and thankfully won't be using them. I'm gonna try and keep it. Do I call Panasonic customer service thats in the manuel? Good luck to everyone
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post #365 of 1481 Old 10-14-2013, 07:33 PM
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Quote:
Originally Posted by msgoalie View Post

I have started look at maybe moving the ZT60 into my basement and perhaps going with an LED like the Samsung F8000. I don't want to go smaller like the 64" F8500 from Samsung. I really wanted a larger set, because I have the room for it, but there is no plasma set over 65", so I've contemplated the 75" F8000 which is ranked as the best LED set on the market. I do realize I will sacrifice some picture quality for the additional size. Don't trust Sharp quality, so not interested in their sets. Not interested in any of the 4K sets either, for various reasons.

I started out with a pani 65ZT60 and was crushed when I had to return it over the fan noise, I had the set for a week and after 3 days I could barely stand to turn it on. I went with Samsung 64F8500 and have been smiling ever since, so if the size can work for you it is a great set. The picture was not as good out of the box but after a little tune (non-pro) it is stunning.

When I saw you mention you were considering more invasive remedies to the fan noise I did have an idea I thought about in the week I had the ZT60 turbo-prop. The idea is a simple change to the depth of the back enclosed area, as soon as I realized it was how the air flowed and not as much the fans and Panasonic’s “fix” clearly deals with flow and not noise suppression I thought of this but did not think it was cool/right to open the back once I had returned it on paper and was just waiting for them to exchange it with the F8500 (no fans).

I was going to get some ½” to ¾” thick X ½” wide single-sided sticky rubber strips, the real stiff kind, take the TV back off, and run the strip all the way around to put the back out by ½” to ¾” of an inch but keep it sealed. You’ll probably need to get longer screws to put the back on again. You will also want to put the strips on the fans around the top of the fan case so they seal to the back when it is on or all they will do is blow hot air around inside the case… My guess was this would be enough to kill the issue and it is reversible and cheap! I have a gut feeling that the issue is how tight the back is mixed with open areas make it all an open are by adding ¾” to the depth.

Only if that failed would I resort to the Dremel but I think you have the right idea, you need to change the airflow and making it deeper I think has to change it, as well as the resonant frequency, should lower it I think, never was good at fluid dynamics. Cutting out the grills will also change it and is cheap, just not reversible.

Good luck!
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post #366 of 1481 Old 10-14-2013, 07:49 PM
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Yes! smile.gif As I mentioned earlier in this thread, my problem was a buzz/hum that was coming not only from the TV (ZT60) but from my audio amplifiers as the picture intensity changed. The buzz from the TV is relatively soft. But the amplifier hum can be quite loud and distracting in soft sections of a movie. With the TV off, there was no problem with the amplifiers. I had the Panasonic service reps out twice to see if they could do anything about it. No dice. They replaced the power supply boards but that didn't help. It is something about how the power supplies are designed that is causing my problem.

Since I like the picture quality of the television so much, I looked around for another solution. I think that I have found it. What I thought would work is to isolate the TV power from the audio equipment power using an isolation transformer. I ordered a Tripp Isolator IS1000 sight unseen in the hope that it would do the trick. Success! I plugged the TV directly into the wall and the isolation transformer into the other socket. I then plugged my audio equipment into the isolation transformer. The amplifiers are now dead silent with the TV operating normally. However, the isolation transformer itself does hum softly. But it hums softly enough that it is not distracting (unlike the hum from the amplifiers before using the isolation transformer). Winner! My problem appears to be solved.

It is unfortunate that I had to shell out for the isolation transformer (about $250). I would have liked a more stable power supply in the TV itself. But for now, I am happy. I will be running it for the next few days to make sure that everything works well and post later.
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post #367 of 1481 Old 10-15-2013, 10:37 AM
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Originally Posted by Tallis77 View Post

Success! I plugged the TV directly into the wall and the isolation transformer into the other socket. I then plugged my audio equipment into the isolation transformer. The amplifiers are now dead silent with the TV operating normally.
Nice. Curious if just plugging the tv into the isolation transformer and leaving everything else as was would have produced the same result.
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post #368 of 1481 Old 10-18-2013, 05:23 AM
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Originally Posted by JRonnie7 View Post

I had the fan fix done (65VT60) by some third party service reps and it seems to have quieted the fans some. While they were in there they tightened all of the screws and now it seems that the buzzing is more audible at times (10 feet away) on bright screens. Panel seems great, but I've considered exchanging due to the buzz. Is this normal or what would you suggest?

Same thing happened with mine. I just had the fix done yesterday and now notice more buzzing on lighter screens . Real apparent on all white screen.

I'm wondering if it was always there, just drowned out by the fan noise. On mine , the fan noise was reduced by at least 50% after the fix, which could be enough to make the buzzing more noticable.
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post #369 of 1481 Old 10-18-2013, 08:21 AM
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I got a 65ZT50 and the whiring fan noise is worse than the 65 GT30 it replaced.
It is on the wall, can anyone tell me where the buld date/ serial number sticker is so I can get a picture of it with my phone.

I called in a case to get the foam installed. But, it seems odd that this would not have already been done at the factory.

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post #370 of 1481 Old 10-18-2013, 08:49 AM
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Quote:
Originally Posted by davoe View Post

P65ZT60, AO056xx, June production, fan noise (whining).

Wall mounted.

Just bought my 65ZT60, and it's a June build date. I'd have thought I would have received a much later build date. Hmmm.

This doesn't make me feel warm and cozy. I'm going to plug it in and scrutinize the heck out of it. If the noise is too much I'm taking it back to BB.

Ron
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post #371 of 1481 Old 10-18-2013, 08:51 AM
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Quote:
Originally Posted by RichB View Post

I got a 65ZT50 and the whiring fan noise is worse than the 65 GT30 it replaced.
It is on the wall, can anyone tell me where the buld date/ serial number sticker is so I can get a picture of it with my phone.

I called in a case to get the foam installed. But, it seems odd that this would not have already been done at the factory.

- Rich
Build date sticker is on the back of the set, in the middle. Odd indeed, but the additional foam is noise fix that wasn't deployed in manufacturing until a few months after sets were first being built/delivered.
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post #372 of 1481 Old 10-18-2013, 08:55 AM
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Quote:
Originally Posted by fmalczewski View Post

Build date sticker is on the back of the set, in the middle. Odd indeed, but the additional foam is noise fix that wasn't deployed in manufacturing until a few months after sets were first being built/delivered.

What color is the foam? Is it possible to see it well from the outside looking in through the grill? If it is, will it be installed on all three fans?

Thank you.

Ron
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post #373 of 1481 Old 10-18-2013, 09:03 AM
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Has anyone ever put an SPL meter on this? My AV cabinet is solid enclosed and my equipment is operated via RF on my H-900, except the TV which is IR. I can hear the four 120mm Real Silent PC Case fans cooling my equipment but only when there is no audio at all from the AVR. It is less than 3 dB at 1 meter so the AVR quickly covers it up whenever watching anything at all. I just ordered a TC-P60VT60 and am mildly concerned but I think that I won't perceive it at all. I'd rather keep my equipment operating at a lower temperature than get overly excited about fan noise. That said, I have not heard it yet. I will investigate when I get mine but what size fan is this and can a Real Silent PC case fan be installed instead and the airway improved to reduce noise?

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post #374 of 1481 Old 10-18-2013, 09:04 AM
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Quote:
Originally Posted by fmalczewski View Post

Build date sticker is on the back of the set, in the middle. Odd indeed, but the additional foam is noise fix that wasn't deployed in manufacturing until a few months after sets were first being built/delivered.

I think it needs to come off the wall to be sure, but my friend remembers June or July.
Since it will be repaied next Friday, I will check it then.

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post #375 of 1481 Old 10-18-2013, 10:44 AM
 
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Quote:
Originally Posted by roncruiser View Post

Just bought my 65ZT60, and it's a June build date. I'd have thought I would have received a much later build date. Hmmm.

This doesn't make me feel warm and cozy. I'm going to plug it in and scrutinize the heck out of it. If the noise is too much I'm taking it back to BB.

Ron
The fact that you got one with a June build date just shows how poorly these are selling sadly.
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post #376 of 1481 Old 10-18-2013, 11:45 AM
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I got mine exactly one month ago from BB with an April build date. Seems odd I got one so old :-/ I never checked the hours. Maybe I should have. Might be swapping it anyways.
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post #377 of 1481 Old 10-18-2013, 02:25 PM
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^ Is there an easy way to check the hours on a VT60?
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post #378 of 1481 Old 10-18-2013, 02:27 PM
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can check hours in the service menu

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post #379 of 1481 Old 10-18-2013, 02:33 PM
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^ Is there an easy way to check the hours on a VT60?

Viera menu-help-version-status4 will get you very close if not exact like mine.
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post #380 of 1481 Old 10-18-2013, 02:42 PM
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Originally Posted by vinnie97 View Post

The fact that you got one with a June build date just shows how poorly these are selling sadly.

I think Panasonic under-estimated how quickly the word would get out, it now all over Best Buy and Amazon, and even cNet is mentioning it although the "pro" sites keep as low profile as possible in reviews, I suspect our "professional" review community might be just a tad too close the makers these days to expect exposure of flaws like this, I have still not seen a professional reviewer mention it, not to say none have, I have just not run into one which is really sad.
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post #381 of 1481 Old 10-18-2013, 02:48 PM
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Quote:
Originally Posted by roncruiser View Post

Just bought my 65ZT60, and it's a June build date. I'd have thought I would have received a much later build date. Hmmm.

This doesn't make me feel warm and cozy. I'm going to plug it in and scrutinize the heck out of it. If the noise is too much I'm taking it back to BB.

Ron

The "good" news is that it does not take any deep scrutiny, mine was evident the second the TV was on, all you need is a quiet room and the TV/AVR on mute.

good Luck!
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post #382 of 1481 Old 10-18-2013, 03:31 PM
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Quote:
Originally Posted by CamaroDrvr View Post

Quote:
Originally Posted by roncruiser View Post

Just bought my 65ZT60, and it's a June build date. I'd have thought I would have received a much later build date. Hmmm.

This doesn't make me feel warm and cozy. I'm going to plug it in and scrutinize the heck out of it. If the noise is too much I'm taking it back to BB.

Ron

The "good" news is that it does not take any deep scrutiny, mine was evident the second the TV was on, all you need is a quiet room and the TV/AVR on mute.

good Luck!

Which also isn't normally the case when watching a movie or TV for example.

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post #383 of 1481 Old 10-18-2013, 03:41 PM
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Originally Posted by Sammy2 View Post

Which also isn't normally the case when watching a movie or TV for example.

I can hear mine during during quiet passages.

I am sure that these products have maximum noise specs.
It should have been tested and caught earlier.

I applaud Panasonic for taking care of the problem but I am sure this is not cheap.
50 cents in parts and probably $50 tp $100 in third party charges.

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post #384 of 1481 Old 10-18-2013, 04:10 PM
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I also hear the projector at the movie theater during quite passages.. or at least I used to back in the day.. and that is way louder than any fan could possibly be. That said, I haven't heard the VT60 yet either.

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post #385 of 1481 Old 10-18-2013, 04:29 PM
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I bit the bullet and cut out the grills completely (despite still being under warranty) and it made the most improvement of all things I did. Also have more foam strips inside around the fan and sound insulation sheeting inside the case. Cardboard, foam lined baffles over the fan outlets and big sheets of acoustic foam over the back of the tv.

Full details with pics here (posts #20-32) :

http://www.avforums.com/forums/plasma-tvs/1643735-vt50-fan-noise-fix.html
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post #386 of 1481 Old 10-18-2013, 06:12 PM
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Quote:
Originally Posted by merccrazy View Post

Viera menu-help-version-status4 will get you very close if not exact like mine.

Very cool. I calculated that I had the slides going for about 45 hours and when I checked that setting it matched up. Seems to round down to the nearest hour, but that's good enough.

Thanks
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post #387 of 1481 Old 10-18-2013, 08:17 PM
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I was planning to buy one but this fan noise has me concerned now! How many db are we talking about.

I will sit 5 feet away from it! Should I be concerned?
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post #388 of 1481 Old 10-18-2013, 08:17 PM
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Has any one got their set calibrated can you post you results please
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post #389 of 1481 Old 10-18-2013, 08:55 PM
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Can the foam be seen from the outside looking in through the grill holes? Is it black foam, and fairly obvious?
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post #390 of 1481 Old 10-19-2013, 05:06 AM
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Originally Posted by roncruiser View Post

Can the foam be seen from the outside looking in through the grill holes? Is it black foam, and fairly obvious?

Ron, yes it can. I had a build date on my TV of July 2013 so I wasn't 100% sure if it had the foam or not, but I was able to peak behind the TV into one of the grills and could see the black foam. I don't know how load the TV would have been before the foam, but it seems fine to me. I can hear it just a little, but watching any content at all would easily overpower it and be a none isse. I think the panel buzzing on a full white screen is louder than the fan, but again not a deal breaker IMO.
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