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Topic: Defective LCD 2004 (Read 815 times) previous topic - next topic

lax123

Aug 08, 2012, 05:38 pm Last Edit: Aug 08, 2012, 05:40 pm by lax123 Reason: 1
Hi,

has someone seen an error like this before?

It suddenly occured out of nowhere.

I guess nothing i can do about it, can I?

floresta

What are we supposed to be looking at? 
-Wrong information is displayed?
-Correct information is in the wrong location?
-Black spots on screen?
-White squiggles on screen?


Don

lax123

Hi,

i removed the foil, so in this picture there is no dirt.

There is an error at the letter P and the white stuff in the middle.


1 week ago it was pefectly fine, and now suddenly...

floresta

Quote
There is an error at the letter P and the white stuff in the middle.

There was no 'P' in your original photograph.  The 'P' in this one looks OK to me, what does your data sheet say it should look like?

I don't have any idea about the white stuff.


Don

lax123

hmmm,

dont you see the black hole in the top of the P 3rd row? Its like burned out or something, i dont know.

P18F4550

the white squiggle looks like leaky pixels, this is a negative screen so in the real world they would be black, i've had a couple do the same, usually after impact damage but not always, sometimes their just leaky, It will never get better only worse

floresta

Quote
dont you see the black hole in the top of the P 3rd row? Its like burned out or something, i dont know.

It looks just like all the other black spots that were in your original photograph.  I thought you just missed cleaning that one up. 

It's hard enough coming up with the solutions to the problems without knowing exactly what the problem is.  Carnak the Magnificent died with Johnny Carson.


Don




Docedison

and that one as I remember wasn't always spot on or off either... Funny Though I miss that stuff, but who'd watch it today?

Doc
--> WA7EMS <--
"The solution of every problem is another problem." -Johann Wolfgang von Goethe
I do answer technical questions PM'd to me with whatever is in my clipboard

lax123

#8
Aug 09, 2012, 07:51 am Last Edit: Aug 09, 2012, 07:56 am by lax123 Reason: 1
@floresta, "i removed the foil, so in this picture there is no dirt."
I can see the black spot is in the "glass"...

@docedison, sry i dont understand your answer


@P18F4550, thx. so with any of these screens it might happen again and again? it was laying flat on the table, no pressure applied...
Any way to prevent that from happening  -different type, colours or something else, maybe the backlight heating it up to much over time?

Docedison

Irrelevant comment about Carnak... Sorry

Doc
--> WA7EMS <--
"The solution of every problem is another problem." -Johann Wolfgang von Goethe
I do answer technical questions PM'd to me with whatever is in my clipboard

pwillard

I have seen this with a NEW unused LCD that was STORED for about 8 years in parts bin.  I would say, if it wasn't an impact, it was age.  Failing that, it was defective from manufacture and USING it made it more evident.

lax123

luckily the seller sainsmart on ebay just told me that on friday he sent me a new lcd as replacement :-)

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