LCD screen repair?

[julianf]

My partner has just told me that, whilst she was watching it, our old flat screen Sony Bravia went black in the corner and then that blackness rapidly grew to engulf the whole screen.

There are load of "my TV screen is blank" posts on the web, but this seems to be more of an LCD issue rather than software, power, etc.

Would you agree?

No physical damage, and it was working fine last night.


The reason I'm posting here is that a) people know some stuff here, and, b) years ago, when these things first started to come out, lots of people fixed power boards for them etc, so I'm hoping on a fix...

...but, to me, the spread of "blackness" from one corner to the other, as she was watching it, just doesnt sound like a power failure?

Can anyone give insight?

Thank you.

 

[julianf]

I've just quizzed her further. She says about 15 seconds from the first instant of black in the corner to the whole thing going black.

She said it all spread from one "propergation" point in the corner.

 

[voipio]

Maybe something like this happened to the rear glass of the LCD screen:

https://www.mig-welding.co.uk/forum/threads/bathroom-scales-thousand-pieces.143105/

 

[mike 109444]

Have you tried shining a torch at the screen (semi dark room would help) to seeif you can see anything. If you can then back light has failed.

 

[angellonewolf]

As above if you shine a torch on it can you see a picture in the back ground ?

Either way unless your lucky the cost of the led strips are more than a 2nd hand tv or prob about a third of a cost of a new tv

 

[julianf]

Have you tried shining a torch at the screen (semi dark room would help) to seeif you can see anything. If you can then back light has failed.

No. Well, yes.

On boot up, the screen lightens. I think I can see fading and lightening in time with the logo screen (the sound still works, so I know what's going on)

But, no, it seems like the backlight is doing stuff but the LCD isn't.