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[Q] NSTwGlowlight, half IR sensors acts wrong

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By thrackanomir, Member on 8th May 2014, 10:21 PM
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Hi,
I have recently bough a Nook Simple Touch with Glowlight (BNRV350). Used, no guarantee. It looks fine (has only a minor scratch on the light dispersing layer). Problem is - the lower half of the touch sensors give misplaced readings. For example - during the registration process I cannot get through the language selection screen. I can correctly mark English, but when I want to press an arrow to go further, Nook changes my mark to French, instead of getting me to the next screen. Cleaning borders of the screen with microfiber cloth and cotton swabs did not help.

I have another NSTG working fine, so:
1. I tried to copy its stock system backup and loading it to malfunctioning one. It didn't help. I could not even unlock the screen (although I could press "power off" or "cancel" buttons after holding power button).
2. I tried swapping mainboards (IR sensors are on them, not in the screen assembly). And It turned out, that wherever mainboard of the faulty unit is, the touch does not work properly. I tried to blow out the dust from those misbehaving sensors hoping that it just somehow got on the motherboard, but it did not help either.

So the question is: What else can I do to make those IR sensors work properly?

Thanks in advance for looking into the problem!
(Sorry for my English, I'm used to reading, not to expressing my thoughts with it.)
 
 
8th May 2014, 10:25 PM |#2  
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Maybe try to look on the sensors with a cellphone camera in dark room-then probably you will see which of the ir leds aren't working (if the problem is in leds not the sensors)

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27th May 2014, 09:25 AM |#3  
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Unfortunately I couldn't find any camera able (tried mobile phone, point'n'shoot, DSLR...) to detect IR in their stock configuration (and messing up with disassembling the sensor filters seemed as not worth the case). I ended up buying another NSTG with shattered eink screen and salvaging its properly working mainboard (+completely fine battery, all for about $7). Problem solved. Kind of.
27th May 2014, 11:47 AM |#4  
Renate NST's Avatar
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If you are having problems with the touch screen try using the app posted here:
http://forum.xda-developers.com/show...6#post52723066
It may give you insight into where the problem is.
It will help us get an idea of where problems are occurring.
27th May 2014, 04:00 PM |#5  
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Thank You. I've read about Your program, but since I could not even unlock the screen or get past registration wizard (when trying to get that unit to factory state) I was unable to use it.
27th May 2014, 05:19 PM |#6  
Renate NST's Avatar
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The Menu button (when you mapped) gets past the swipe.
You can start stuff with ADB intents.
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