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VT50 yellow-ish blob on display - Page 27

post #781 of 964
mo949

I think they're nuts to make these plasma panels this thin and sacrifice safe temperature limits.

Can't help but wonder if the VT60s will have the same problem given enough time.
post #782 of 964
Quote:
Originally Posted by JimP View Post

mo949

I think they're nuts to make these plasma panels this thin and sacrifice safe temperature limits.

Can't help but wonder if the VT60s will have the same problem given enough time.

I installed two 120mm fans over the center top vent on my vt60 at around 300 hours. I have 1200 hours on it now and it is looking better and better as time goes on. I think I might add two more. Better safe than sorry.
post #783 of 964
Quote:
Originally Posted by JimP View Post

mo949

I think they're nuts to make these plasma panels this thin and sacrifice safe temperature limits.

Can't help but wonder if the VT60s will have the same problem given enough time.

mo949 did you install your two fans over the oem fan outlets?
Edited by merccrazy - 12/30/13 at 7:26pm
post #784 of 964
Quote:
Originally Posted by merccrazy View Post

I installed two 120mm fans over the center top vent on my vt60 at around 300 hours. I have 1200 hours on it now and it is looking better and better as time goes on. I think I might add two more. Better safe than sorry.

How did you mount the fans?

Larry
post #785 of 964
Quote:
Originally Posted by LarryInRI View Post

How did you mount the fans?

Larry

They are mounted side by side on a custom plate that I hold in place with tape for now untill I move the set and can mount it better with a 3m product like velcro.
post #786 of 964
Quote:
Originally Posted by merccrazy View Post

They are mounted side by side on a custom plate that I hold in place with tape for now untill I move the set and can mount it better with a 3m product like velcro.

Thanks.

Larry
post #787 of 964
Quote:
Originally Posted by LarryInRI View Post

Thanks.

Larry

No problem:)
post #788 of 964
Quote:
Originally Posted by mo949 View Post

Let me clarify. I do not have the blobs. I put fans on to prevent the blobs since I believe heat creates improper wear and aging of the pixels in areas where the TVs own fans are inadequate. Next to where you find the tv fans you will find hot spots that correlate pretty well with the pics. Also the top center of the panel has a heat spot and can get the blobs.

I use noctua 120mm fans and run them in the low noise 16db mode. I use the thermostatic controller, power supply, and extension cords that jimp kindly posted earlier in this thread. The fans kick on when the temp gets to 88f and shutoff when the hotspot I have the probe tied to (hottest spot I could find) gets to 81.

When watching my 25fl night mode with 2.35:1 content the fans will actually bring the temp back to below 81 and the fans will kick off. In the higher fl day mode and 3d the temp is too high to achieve this.

I see, thanks for the reply. I've already got the blobs... Installed a fan at the back yesterday, in front of a bigger blob, - does not seem to have any effect. The back part is cold while the front blob area is still hotter than the others. So I guess there is permanent damage and there is no simple remedy to that. At least I hope they won't get worse.

post #789 of 964
Quote:
Originally Posted by JimP View Post

mo949

I think they're nuts to make these plasma panels this thin and sacrifice safe temperature limits.

Can't help but wonder if the VT60s will have the same problem given enough time.

I echo your thoughts. If I had a vt60 today I would install the same fans I just did.
Quote:
Originally Posted by merccrazy View Post

Quote:
Originally Posted by JimP View Post

mo949

I think they're nuts to make these plasma panels this thin and sacrifice safe temperature limits.

Can't help but wonder if the VT60s will have the same problem given enough time.

mo949 did you install your two fans over the oem fan outlets?

I chose to install them over vents lower down than oem ones to maximize total cooling. I installed them over the vents closest to the hotspots I had started to observe over the past few months specifically. Also I used 'real' duct tape around the edges so that all the static pressure generated would translate to cooling below the back plate.

The third fan I'm installing over the top is likely not needed since I've created enough cooling from the high powered fans that the center is just 'warm' now instead of hot - but ill give it that extra ounce of prevention to insure long term screen uniformity.
post #790 of 964
Quote:
Originally Posted by JimP View Post

As a preventative measure, I surface mounted two additional thermostatically controlled fans.
They're positioned on top of the perforated area on top of the circuit boards on the far right and far left. These are the areas where most are seeing yellow blobs.
Given the number of hours I've run this display before adding the fans without yellow blob problems, I probably didn't have anything to worry about.
On the flip side, I also thought that these circuit boards are getting pretty hot and some additional cooling couldn't hurt.
Quote:
Originally Posted by mo949 View Post

I use the thermostatic controller, power supply, and extension cords that jimp kindly posted earlier in this thread. The fans kick on when the temp gets to 88f and shutoff when the hotspot I have the probe tied to (hottest spot I could find) gets to 81.

Where exactly do you place the thermal probe (that controls all fans) on the back panel ?

Thanks.

- M
post #791 of 964
I place mine over the main boards hottest spot ( halfway up the left side if looking from front ).

Warm your set up and feel out the back and you should find 3 hot spots
post #792 of 964
Quote:
Originally Posted by mo949 View Post

I place mine over the main boards hottest spot ( halfway up the left side if looking from front ).

Warm your set up and feel out the back and you should find 3 hot spots

cool, the hottest spot on my VT50 seem to be right in the middle towards the top, right around the silver Panasonic sticker....

I'll play around with a few spots...

Thanks !

- M
post #793 of 964
After 9 1/2 weeks finally got a refund check from Panasonic for my 65vt50 and had my DOA 65vt60 and yellow blobbed 65vt50 picked up. Done.
post #794 of 964
Quote:
Originally Posted by lentiman View Post

After 9 1/2 weeks finally got a refund check from Panasonic for my 65vt50 and had my DOA 65vt60 and yellow blobbed 65vt50 picked up. Done.
What's next?? smile.gif
post #795 of 964
Quote:
Originally Posted by scirica View Post

What's next?? smile.gif

Ah, I already picked up a 65VT60 from ABT (September build date). I had about a week before I took my VT50 off the wall so the VT60 has about 150+ hours of D-Nice's slides on it. I currently have the CNET settings on it and will input D-Nice's settings via ControlCal and compare them. I'm happy with my VT60 for the moment and getting the TV's out of my garage gave me the push necessary to get it cleaned out. =)

Forgot to turn the motion smoother off and was watching Goonies on Blu-ray. Wow. It's like you're on drugs with that thing on. eek.gif
post #796 of 964

Another update...Finally after 10 weeks(seems to be Panasonic's time frame...scirica;)) I have my choice of a full refund, VT60, or upgrade to a ZT60. Not sure at this point...I know both VT/ZT are phenomenal displays, I just don't want to deal with this again 6 months down the road. Decisions Decisions...:) 

post #797 of 964
Quote:
Originally Posted by mascior View Post

Another update...Finally after 10 weeks(seems to be Panasonic's time frame...scirica;) ) I have my choice of a full refund, VT60, or upgrade to a ZT60. Not sure at this point...I know both VT/ZT are phenomenal displays, I just don't want to deal with this again 6 months down the road. Decisions Decisions...smile.gif  

Here was my take when I was offered a refund: The VT60 is about the best display you can get for the money. If you have an issue with it within the warranty or extended warranty coverage range you will not be able to get it replaced (production will have stopped). So they will have to issue you a refund for your purchase price. As display prices drop over time this sort of protects your "investment" if you have to get a refund. At that time you can get the best display for the price. Everyone seems pretty happy with their VT60's.
post #798 of 964
Panasonic said my part ordered Dec. 2 (panel for 55 inch VT 50) is shipping. Hmmm.. they have the panel in some cases but not others. Panasonic service time frame has got to be the worst of any reputable manufacturer, piss poor if you ask me. eek.gif
post #799 of 964
I have the ST50 that started developing yellow blobs. Most of the time you can"t see them. My warranty ran out in November but I thought I'd call Panasonic and see what they"d say. I was told to have their local approved tech come out and look at it, at my expense, and if he found a problem they would help me with the costs. I don't think thats a bad offer at all seeing that the tv is out of warranty. I'm just going to live with it though as it"s really not that bad at all. Just a props for panasonic for the offer.
post #800 of 964
Quote:
Originally Posted by Todd68 View Post

Panasonic said my part ordered Dec. 2 (panel for 55 inch VT 50) is shipping. Hmmm.. they have the panel in some cases but not others. Panasonic service time frame has got to be the worst of any reputable manufacturer, piss poor if you ask me. eek.gif


Okay I guess I jumped the gun with this last complain post. My part is actually a 60 inch VT-60. The service company said Panasonic sent us a 60 inch instead of 55 inch replacement, is that okay" ? I said well sure, I don't mind. The service company is bringing it out tomorrow to set it up and take my old 55 VT-50. So the whole process took almost 6 weeks.
post #801 of 964
Congrats and nice upgrade !!
post #802 of 964
an upgrade like that is a nice touch to make up for such a long amount of time imo. Very nice!
post #803 of 964
My new VT60 arrived today, no problems with fan noise or anything. Looks pretty good in THX cinema mode, good enough for now anyways. I notice though the VT60 is more reflective compared to the VT50. Thanks to all for the guidance and support. Though a slowish process, the upgrade in size made up for it .


Edit:: I have it in my basement and with lights off I definitely see better blacks and shadow detail, I think I will be very pleased with it. cool.gif

Good luck to the rest of you going through the process.
Edited by Todd68 - 1/8/14 at 12:20pm
post #804 of 964
Quote:
Originally Posted by Todd68 View Post

My new VT60 arrived today, no problems with fan noise or anything. Looks pretty good in THX cinema mode, good enough for now anyways. I notice though the VT60 is more reflective compared to the VT50. Thanks to all for the guidance and support. Though a slowish process, the upgrade in size made up for it .


Edit:: I have it in my basement and with lights off I definitely see better blacks and shadow detail, I think I will be very pleased with it. cool.gif

Good luck to the rest of you going through the process.

I've had two VT60's with loud fans now, and it is very annoying... getting the 3rd (hopefully) soon...
post #805 of 964
My 55ST50 has also developed the yellow blobs. I purchased it in April of 2012 which puts it far outside the factory warranty. However, I purchased it with American Express so my warranty is extended by a year.

What's the quickest way of getting a repair quote from Panasonic? I'm assuming that panel replacement (if they still have them) + labor is going to exceed the original cost of the TV.
post #806 of 964
Quote:
Originally Posted by Iron Mike View Post

Quote:
Originally Posted by Todd68 View Post

My new VT60 arrived today, no problems with fan noise or anything. Looks pretty good in THX cinema mode, good enough for now anyways. I notice though the VT60 is more reflective compared to the VT50. Thanks to all for the guidance and support. Though a slowish process, the upgrade in size made up for it .


Edit:: I have it in my basement and with lights off I definitely see better blacks and shadow detail, I think I will be very pleased with it. cool.gif

Good luck to the rest of you going through the process.

I've had two VT60's with loud fans now, and it is very annoying... getting the 3rd (hopefully) soon...

Do you think the fans are louder because they push more air than the vt50's fans did?
post #807 of 964
Update on my "blob journey". I got a call today from the tech that will be coming out to apply the Panasonic-prescribed "fix" to the yellow blob issue (tomorrow morning). As many of you know, that consists of changing the VSUS from Low to High, and then increasing the Blue Drive. I discussed this approach with the technician and asked the following:

Q: Have you done this service on any other Panasonic plasma panels?
A: No I haven't, but it looks pretty straightforward.

Q: My panel has been professionally calibrated. Won't the increase in blue drive have a direct effect on my grayscale and change the overall picture off my calibration specs?
A: Not sure. I suppose, but I don't know anything about calibrating TV's. In fact, when I go into Best Buy and they show me two sets, one calibrated and one not, I always pick the uncalibrated one as the better picture.

Q: If we determine that we the Panasonic fix is unacceptable, can you return it to how it was before your changes?
A: I can return it to factory specs and you will have to recalibrate it.

I don't know about you guys, but I'm a little scared to have this particular technician working on my set and then ultimately communicating back to Panasonic on the results. I'd love to get your thoughts.
post #808 of 964
He sounds pretty clueless honestly, the guy that did my Aboard replacement on my ST60 didn't know anything about calibration at all. I think this fairly typical though, doubt if Chad would be comfortable replacing boards but you never know. If you know your before bdrv setting shouldn't be to hard to restore back to default. any idea whether they are doing that in the service menu ?
post #809 of 964
I cringe for you frown.gif

I think way to go is getting the techinician on your side by taking photos of the 'white' screens after the fix looking purplish blue (as mascior described earlier) and getting him to agree with you that a giant purplish blue blob is not a real fix for a yellowish blob.
post #810 of 964
Yeah, I'm anxiously awaiting the outcome of this as well for my ST50.

My TV isn't professionally calibrated so I don't have anything to lose there. However, if the only fix they will do right now is changing a few settings in the service menu, I'm really not sure I want to go through the whole extended warranty process with American Express since it seems like something I could easily do myself.

Also, if the fix doesn't get rid of the splotches or really throws the color of the whole TV off in a way that can't be changed adjusted back, then it will REALLY be not worth the effort of this process.
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