Plasma has spots... - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 
Thread Tools
post #1 of 10 Old 07-12-2016, 03:31 PM - Thread Starter
Newbie
 
Join Date: Jul 2016
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked: 0
Plasma has spots...

My 58" Panasonic plasma TV (TH-58PE75U). Bought it from Costco many years ago. Recently it started to develop spots. I originally thought my teens splashed something on the screen but these are inside and not able to be cleaned from the exterior. The spots are there with or without power and they seem to be multiplying. Any ideas?
Attached Thumbnails
Click image for larger version

Name:	plasma tv (1).jpg
Views:	87
Size:	326.8 KB
ID:	1542289   Click image for larger version

Name:	plasma tv (2).jpg
Views:	86
Size:	517.6 KB
ID:	1542297   Click image for larger version

Name:	plasma tv (3).jpg
Views:	74
Size:	347.6 KB
ID:	1542305  
southerntester is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 07-12-2016, 03:40 PM
AVS Forum Special Member
 
sage11x's Avatar
 
Join Date: Dec 2006
Location: Brighton, MI
Posts: 3,197
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 731 Post(s)
Liked: 808
Assuming this is below the surface of the glass and not simply a spill: looks like a seperation between the outer glass and the substrate. They are simply glued together so it's possible that with enough age and heat that they are simply coming apart.

What to do if you find yourself stuck with no hope of rescue:
Consider yourself lucky that life has been good to you so far. Alternatively, if life hasn't been good to you so far, which given your present circumstances seems to be more likely, consider yourself lucky that it won't be troubling you much longer...

-- Excerpt from the Hitchhiker's Guide to the Galaxy.
sage11x is offline  
post #3 of 10 Old 07-12-2016, 03:59 PM - Thread Starter
Newbie
 
Join Date: Jul 2016
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked: 0
Quote:
Originally Posted by sage11x View Post
Assuming this is below the surface of the glass and not simply a spill: looks like a seperation between the outer glass and the substrate. They are simply glued together so it's possible that with enough age and heat that they are simply coming apart.
Assuming they are separating what should I expect moving forward? The picture is still very good at this point with just the annoying spots. The TV is old and not really worth anything but is this repairable, maybe DIY?
southerntester is offline  
 
post #4 of 10 Old 07-12-2016, 07:34 PM
"Don't PM Me Bro"
 
RandyWalters's Avatar
 
Join Date: Feb 2003
Location: El Segundo, Calif
Posts: 18,883
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 499 Post(s)
Liked: 766
You sure it's on the inside, and not between the AR filter and the outer glass? And nobody cleaned the screen with any kind of windex or anything? Cause it kinda looks like what happens when Windex attacks the AR Filter but it's hard to tell from the pics.

It's also possible that and internal coating or the black filter on the panel is starting to de-laminate.

If you're handy, you could remove the front bezel and remove the outer glass and see if it's actually on the panel, or if it's in the outer glass.

-

Randy
Sony 55W800B, Panasonic TC-P55ST60, TiVo 2-Tuner Premiere, TWC Arris DCX3600-M 6-Tuner DVR, Onkyo TX-SR333 AVR, URC MX-890, MX-780, MX-450, MX-500 Remotes.
Pic of My A/V setup - http://cdn.avsforum.com/f/f1/900x900..._Img_4867.jpeg
Gallery - http://www.avsforum.com/g/a/2082686/randywalter...
RandyWalters is offline  
post #5 of 10 Old 07-13-2016, 05:09 PM
AVS Forum Special Member
 
RWetmore's Avatar
 
Join Date: Jan 2006
Location: Brick, New Jersey
Posts: 3,831
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 360 Post(s)
Liked: 198
I agree with Randy. That looks like the A/R filter is starting to come off the glass, causing air gaps and what you are seeing.
RWetmore is online now  
post #6 of 10 Old 07-13-2016, 07:36 PM
"Don't PM Me Bro"
 
RandyWalters's Avatar
 
Join Date: Feb 2003
Location: El Segundo, Calif
Posts: 18,883
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 499 Post(s)
Liked: 766
The bubbling effect in those pictures reminds me of when you see older cars with tinted windows where the film is starting to de-laminate from the glass, probably due to heat over time.

Plasma panels all have a black filter applied to the face of the panel which helps give the TV darker black levels, and it's basically like window tint film. Maybe the heat of the panel over time is causing the film to separate from the glass, but if that were a thing i think we would have seen other posts about it. I hope this is just an abberation....




Randy
Sony 55W800B, Panasonic TC-P55ST60, TiVo 2-Tuner Premiere, TWC Arris DCX3600-M 6-Tuner DVR, Onkyo TX-SR333 AVR, URC MX-890, MX-780, MX-450, MX-500 Remotes.
Pic of My A/V setup - http://cdn.avsforum.com/f/f1/900x900..._Img_4867.jpeg
Gallery - http://www.avsforum.com/g/a/2082686/randywalter...
RandyWalters is offline  
post #7 of 10 Old 07-14-2016, 02:25 PM - Thread Starter
Newbie
 
Join Date: Jul 2016
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked: 0
Guys, thanks for the input. I can't say for certain in which layer the problem is but it sure doesn't appear to be on the outside. I started to disassemble the entire unit the other day but there are several screw I can't get to. Don't know how they put them in. I have teenagers so anything cleaning or solvent wise is a possibility. I hate to give up on it because it's been a great TV and we still enjoy the nice picture but I don't think repairing it makes sense. Was hoping for a DIY fix that but might just be an excuse to look at a bigger screen.
southerntester is offline  
post #8 of 10 Old 07-15-2016, 08:21 AM
"Don't PM Me Bro"
 
RandyWalters's Avatar
 
Join Date: Feb 2003
Location: El Segundo, Calif
Posts: 18,883
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 499 Post(s)
Liked: 766
Quote:
Originally Posted by southerntester View Post
Guys, thanks for the input. I can't say for certain in which layer the problem is but it sure doesn't appear to be on the outside. I started to disassemble the entire unit the other day but there are several screw I can't get to. Don't know how they put them in. I have teenagers so anything cleaning or solvent wise is a possibility. I hate to give up on it because it's been a great TV and we still enjoy the nice picture but I don't think repairing it makes sense. Was hoping for a DIY fix that but might just be an excuse to look at a bigger screen.
I'd still remove the outer glass then check the plasma panel to see if the de-lamination is indeed between the panel face and the black filter that's applied to it, or if it's present on the outer glass itself. It is probably one or the other, unless it's actually inside the plasma panel itself.

IIRC, the TH-58PE75U was the Costco version of a TH-58PX60U (a special run of 58 inchers for Costco to use up Panasonic's leftover surplus inventory of 58" panel modules from 2006).

The outer glass is removable and replaceable, so if you can find instructions online for removing the front bezel or front cabinet section of a TH-58PX60U that may reveal how to get to those screws, or some trick to remove the outer glass.

.

Randy
Sony 55W800B, Panasonic TC-P55ST60, TiVo 2-Tuner Premiere, TWC Arris DCX3600-M 6-Tuner DVR, Onkyo TX-SR333 AVR, URC MX-890, MX-780, MX-450, MX-500 Remotes.
Pic of My A/V setup - http://cdn.avsforum.com/f/f1/900x900..._Img_4867.jpeg
Gallery - http://www.avsforum.com/g/a/2082686/randywalter...
RandyWalters is offline  
post #9 of 10 Old 07-23-2016, 06:38 PM
AVS Forum Special Member
 
tomwil's Avatar
 
Join Date: Feb 2008
Posts: 1,420
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
Liked: 26
Quote:
Originally Posted by southerntester View Post
My 58" Panasonic plasma TV (TH-58PE75U). Bought it from Costco many years ago. Recently it started to develop spots. I originally thought my teens splashed something on the screen but these are inside and not able to be cleaned from the exterior. The spots are there with or without power and they seem to be multiplying. Any ideas?
Isn't the TV covered under Costco’s Lifetime Return Policy?

That which may be known of God is evident within man, for God has shown it to them, so that they are without excuse. (Romans 1:19-20)
tomwil is offline  
post #10 of 10 Old 07-24-2016, 10:26 AM
"Don't PM Me Bro"
 
RandyWalters's Avatar
 
Join Date: Feb 2003
Location: El Segundo, Calif
Posts: 18,883
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 499 Post(s)
Liked: 766
Quote:
Originally Posted by tomwil View Post
Isn't the TV covered under Costco’s Lifetime Return Policy?
Costco changed their lifetime TV return policy to 90 days in February 2007, so i think this particular model would have been bought some months after the policy change.


.

Randy
Sony 55W800B, Panasonic TC-P55ST60, TiVo 2-Tuner Premiere, TWC Arris DCX3600-M 6-Tuner DVR, Onkyo TX-SR333 AVR, URC MX-890, MX-780, MX-450, MX-500 Remotes.
Pic of My A/V setup - http://cdn.avsforum.com/f/f1/900x900..._Img_4867.jpeg
Gallery - http://www.avsforum.com/g/a/2082686/randywalter...
RandyWalters is offline  
Sponsored Links
Advertisement
 
Reply Plasma Flat Panel Displays

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off