Spreading "stain" on Toshiba flat screen TV
 

Greetings All,
My neighbor has a 10 year oldToshiba flat screen TV that has what
appears to be a translucent stain, though that's not what it is, on
the outer surface of the display. Whatever is going on is happening in
the TV's internals. When looking at the display it almost looks like
someone spilled really dark coffee on the thing, or sort of like
looking at part of the display through a dark grey cloud. The shape is
amorphous, started about a year ago, and is slowly spreading. Right
now it occludes about 20% of the display. It is not the same darkness
all over. So the brightness of the display varies where the "stain"
is. It is not a plasma. I forgot to get the model number last night
and will try to get it in the next day or two. Any suggestions where
to look or what to look for?
Thanks,
Eric

Spreading "stain" on Toshiba flat screen TV
 

The way you describe it, it is almost certainly the panel itself. Costs more than the TV.

These things are driven in columns and rows, it is very unlikely to get a random shape effect like that due to a fault in the electronics.

A picture would be nice, just to confirm it.

Spreading "stain" on Toshiba flat screen TV
 

On 05/09/2014 17:02, wrote:
Greetings All,
My neighbor has a 10 year oldToshiba flat screen TV that has what
appears to be a translucent stain, though that's not what it is, on
the outer surface of the display. Whatever is going on is happening in
the TV's internals. When looking at the display it almost looks like
someone spilled really dark coffee on the thing, or sort of like
looking at part of the display through a dark grey cloud. The shape is
amorphous, started about a year ago, and is slowly spreading. Right
now it occludes about 20% of the display. It is not the same darkness
all over. So the brightness of the display varies where the "stain"
is. It is not a plasma. I forgot to get the model number last night
and will try to get it in the next day or two. Any suggestions where
to look or what to look for?
Thanks,
Eric


Any sign of insect activity in there?

Spreading "stain" on Toshiba flat screen TV
 

On 9/5/2014 9:02 AM, wrote:
Greetings All,
My neighbor has a 10 year oldToshiba flat screen TV that has what
appears to be a translucent stain, though that's not what it is, on
the outer surface of the display. Whatever is going on is happening in
the TV's internals. When looking at the display it almost looks like
someone spilled really dark coffee on the thing, or sort of like
looking at part of the display through a dark grey cloud. The shape is
amorphous, started about a year ago, and is slowly spreading. Right
now it occludes about 20% of the display. It is not the same darkness
all over. So the brightness of the display varies where the "stain"
is. It is not a plasma. I forgot to get the model number last night
and will try to get it in the next day or two. Any suggestions where
to look or what to look for?
Thanks,
Eric

I'd bet the seal is busted and it's water getting in there.
Good place to look is Best Buy...or Fry's, or any place that
sells new TV's.

Spreading "stain" on Toshiba flat screen TV
 

I had one like that turned out it was getting very bright sun shining on that bit of screen. Removed it to a different position mark has all but disappeated !