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piezo crystal dead zone fix!

cptnjarhead

cptnjarhead

Crossfit Fast Walk Champion Runnerup
Joined
Mar 9, 2010
Messages
1,669
Ok, this is going to sound weird, but my LG G2 had a dead spot across the screen near the top that went strait across. Also had random ghost touches in the same area.
So i took to the cloud (Taco) and found people with the same issue, however on youtube down in the comments section i found a reply from "cristi oprea" about using a piezo quartz ignitor to zap the deadspot. So obviously skeptical i went out and bought a bic lighter, removed the piezo crystal ignitor and tried it on my phone, It works!
It took a few times because after a few hours it would revert back, but now its been over 2 days!. I made a lame ass video explaining what i did, but i wish i would have actually videoed the initial procedure.
https://www.youtube.com/watch?v=uUC3h0b7_5c&feature=youtu.be

I'm sure someone can explain how the electrical discharge woke up my dead zone? :eek:
And the ghost touches are gone. Phone is working perfectly.
 
This is very dangerous I would think. The glass is coated in a thin conductive layer and when our capacitive fingers touch the screen it is registered on a grid. The dead spot would be part of that grid not working. By shocking it with however much mA those generate your hitting the control chip and anything else that it lets past. I would say it causes a state reset to occur. Which means lg should be able to fix it with a low level firmware patch to the touch controller.

it can potentially fry the phone.
 
Lunas said:
This is very dangerous I would think. The glass is coated in a thin conductive layer and when our capacitive fingers touch the screen it is registered on a grid. The dead spot would be part of that grid not working. By shocking it with however much mA those generate your hitting the control chip and anything else that it lets past. I would say it causes a state reset to occur. Which means lg should be able to fix it with a low level firmware patch to the touch controller.

it can potentially fry the phone.
Click to expand...

I worried about that, but i had made up my mind to get an upgrade so it was kind of an experiment. I did it several times, and i have to say, my phone is very responsive and runs perfectly. Even the "knock knock" feature was not working properly, after sparking and then using the "tocuch firmware upgrade" option in the hidden menu, my "knock knock" is back to normal. Thank you for the explanation. :cool:
 
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