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Author Topic: Defective pixels on the TFT  (Read 8826 times)

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Offline fxdev

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Defective pixels on the TFT
« on: February 27, 2011, 08:21:26 pm »
Update: It appears to be some kind of impurity inside the transparent plastic cover.
« Last Edit: November 10, 2012, 01:38:08 pm by cfxm »
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Offline DrDnar

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Re: Defective pixels on the TFT
« Reply #1 on: February 27, 2011, 08:35:00 pm »
Some companies allow a certain number of defective pixels, so they might not take it back. I suppose, in the end, it depends on how long you're willing to wait and how much bureaucracy you're willing to put up with.
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Offline fb39ca4

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Re: Defective pixels on the TFT
« Reply #2 on: February 27, 2011, 08:36:15 pm »
Even $200 computer monitors have this problem, it isn't that big a deal. However, if you can somehow get a program to quickly turn on and off the affected pixels, they sometimes fix themselves.
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Offline z80man

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Re: Defective pixels on the TFT
« Reply #3 on: February 27, 2011, 08:43:40 pm »
Quote from: fb39ca4 on February 27, 2011, 08:36:15 pm
Even $200 computer monitors have this problem, it isn't that big a deal. However, if you can somehow get a program to quickly turn on and off the affected pixels, they sometimes fix themselves.
You could try that through BASIC first.
@cfxm and if that doesn't work ask one of us SH3 coders to code a pixel flicker thing for you. We just need to know the coordinates.
« Last Edit: February 27, 2011, 08:44:06 pm by z80man »
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Offline fxdev

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Re: Defective pixels on the TFT
« Reply #4 on: February 27, 2011, 09:26:15 pm »
Well, I tried locating it via BASIC and the pixel seems to be fully functional.
HOWEVER, the glitch appears to be INSIDE the glass(?!), because those TFT pixels are clearly BELOW this black blob.
Also, it depends on the angle. (I can see the "defective" pixel jump)
« Last Edit: February 27, 2011, 09:33:19 pm by cfxm »
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Offline AngelFish

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Re: Defective pixels on the TFT
« Reply #5 on: February 27, 2011, 09:28:28 pm »
Some type of dirt or impurity must have gotten into the glass during production. I wonder what the state of their production line is if that's the case.
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Offline z80man

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Re: Defective pixels on the TFT
« Reply #6 on: February 27, 2011, 10:20:00 pm »
I wonder if you can remove the glass then.
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Offline DJ Omnimaga

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Re: Defective pixels on the TFT
« Reply #7 on: February 28, 2011, 12:42:31 am »
I hope I do not get too many of these. On my old PC monitor there are some dead pixels and it can be annoying during games.
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Offline TIfanx1999

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Re: Defective pixels on the TFT
« Reply #8 on: February 28, 2011, 08:17:00 am »
     I'd have to agree with DrDnar. This is a known phenomenon, and some companies may not do exchanges for such a thing.
     
I personally don't know if I'd bother with the hassle. if it were multiple pixels in such a short time period, then yes. I would definitely exchange it. It does suck that it happened to such a new product though. :(
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Offline DJ Omnimaga

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Re: Defective pixels on the TFT
« Reply #9 on: February 28, 2011, 04:04:27 pm »
To be honest I am more scared about TI's color screen than Casio, because historically TI calcs are known for missing columns of pixels after a while, although this was mostly on older calcs and they are black and white LCDs.
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Offline qazz42

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Re: Defective pixels on the TFT
« Reply #10 on: February 28, 2011, 04:06:32 pm »
what if the screen drivers are faulty D:

my friend has  GBC with a green pixel at the top, it is annoying x.x
« Last Edit: February 28, 2011, 04:07:34 pm by qazz42 »
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Offline fb39ca4

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Re: Defective pixels on the TFT
« Reply #11 on: February 28, 2011, 04:41:10 pm »
I remember last year, over 90% of the ti83s in my math class had bad rows of pixels.
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Offline DJ Omnimaga

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Re: Defective pixels on the TFT
« Reply #12 on: February 28, 2011, 05:30:30 pm »
Quote from: fb39ca4 on February 28, 2011, 04:41:10 pm
I remember last year, over 90% of the ti83s in my math class had bad rows of pixels.
Ouch X.x. Sometimes I wonder if it's just caused by dust or something...
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Offline yunhua98

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Re: Defective pixels on the TFT
« Reply #13 on: February 28, 2011, 05:43:10 pm »
bad working conditions = workers sabotaging TI's products

:P
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Offline DJ Omnimaga

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Re: Defective pixels on the TFT
« Reply #14 on: February 28, 2011, 08:11:42 pm »
Lol the thing is that in some places in China (where the calcs are made) it's pretty much impossible to get better working conditions, so people will certainly not retailiate by sabotaging stuff. X.x

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