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Forum Index : Microcontroller and PC projects : Mark on new LCD screen

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palcal

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Joined: 12/10/2011
Location: Australia
Posts: 1804
Posted: 03:37am 08 Apr 2024
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I received a new LCD Display and the screen had a large blemish in the middle. I complained and the seller sent a video of how to fix and it is so simple. Others here may already know but I was amazed at how easy it was. I can't upload a video but you hold the screen between thumb and forefinger of both hands, top and bottom of the glass and squeeze hard. Two or three squeezes in different places and the mark was all gone.
"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"
 
phil99

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Joined: 11/02/2018
Location: Australia
Posts: 1789
Posted: 04:09am 08 Apr 2024
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Thanks for letting us know.
A very useful tip.
 
palcal

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Joined: 12/10/2011
Location: Australia
Posts: 1804
Posted: 04:15am 08 Apr 2024
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This was the mark.



"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"
 
SimpleSafeName

Senior Member

Joined: 28/07/2019
Location: United States
Posts: 288
Posted: 04:19am 08 Apr 2024
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Really? I'll (try :) ) to remember that trick. Thanks!
 
Grogster

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Joined: 31/12/2012
Location: New Zealand
Posts: 9066
Posted: 06:23am 08 Apr 2024
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Good to know!  

I'd only be worried about cracking the glass.
It does not take much!!!  
Smoke makes things work. When the smoke gets out, it stops!
 
zeitfest
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Joined: 31/07/2019
Location: Australia
Posts: 385
Posted: 08:09am 08 Apr 2024
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Hmm... would that be a 3.2 inch display ? Not many local vendors around for them.
I received one today, when it arrived the "sealed" antistatic bag had been cut open,  it is not showing any display apart from the backlight.  The adafruit lcd utility runs ok and reports back various parameters so I think the connections are OK. But nothing displays. Annoying to waste time on it when it should be a product without Hassle.


Compressing a lcd is really not a good thing, they used to get dead pixels etc from damage. I would get a replacement, they are expensive enough.
Edited 2024-04-08 18:10 by zeitfest
 
palcal

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Joined: 12/10/2011
Location: Australia
Posts: 1804
Posted: 08:36am 08 Apr 2024
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It is not compressed as pushing on the glass, its squeezing the sides together.
This is the video I was sent.
video
"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"
 
Pluto
Guru

Joined: 09/06/2017
Location: Finland
Posts: 329
Posted: 08:50am 08 Apr 2024
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Thanks for the trick Palcal!
pluto
 
palcal

Guru

Joined: 12/10/2011
Location: Australia
Posts: 1804
Posted: 10:42pm 11 Apr 2024
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Maybe not such a simple fix, each morning the blotch is back and I have to fix again.
"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"
 
Grogster

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Joined: 31/12/2012
Location: New Zealand
Posts: 9066
Posted: 03:21am 12 Apr 2024
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Oh, gotcha - sounds much safer for the glass!  
Smoke makes things work. When the smoke gets out, it stops!
 
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