Author Topic: Darkened Monochrome LCD Display from Air Conditioner Remote Control  (Read 15986 times)

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Offline pinleeTopic starter

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Hi all, I have this LCD screen from my remote control which has a darken spot that making the screen unreadable. This remote is rather old and the company who manufacture the air-cond was no longer in the business.

I wish to replace the LCD but not sure how to get a new one. It has no serial no or so. Maybe I have missed it out somewhere.

Thank you, any help is appreciated.

 

Offline ataradov

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Re: Darkened Monochrome LCD Display from Air Conditioner Remote Control
« Reply #1 on: November 16, 2015, 06:19:18 am »
I'm 99.9% positive that this is a custom LCD and the only way to replace it is to find another remote from the same model.

Custom LCDs are almost as cheap to make as the PCBs, so companies making 1000's of units just make their own that suits their application.
Alex
 

Offline pinleeTopic starter

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Re: Darkened Monochrome LCD Display from Air Conditioner Remote Control
« Reply #2 on: November 16, 2015, 06:26:50 am »
First thing first, I am sorry to post in the wrong category. I should have this post in the Repair category.

I can what looks like me two pieces of glasses glued together to make the screen. Is there ways to open and cleaning the darken spot? What cause it?
 

Offline ataradov

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Re: Darkened Monochrome LCD Display from Air Conditioner Remote Control
« Reply #3 on: November 16, 2015, 06:30:37 am »
I can what looks like me two pieces of glasses glued together to make the screen.Is there ways to open and cleaning the darken spot?
There is also liquid crystals between the glass plates. The crystals are distributed in a really thin uniform layer. The dark spot is those crystals leaking out because geometry of the plates was violated.

There is absolutely no way to repair this. It is like trying to repair inner layers of 8-layer board. Simply can not be done.
Alex
 

Offline all_repair

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Re: Darkened Monochrome LCD Display from Air Conditioner Remote Control
« Reply #4 on: November 16, 2015, 07:24:21 am »
There is universal AC remote controller selling quite cheaply.  It does work, I have bought few to replace the remote for my Dakin aircond.
 

Offline rs20

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Re: Darkened Monochrome LCD Display from Air Conditioner Remote Control
« Reply #5 on: November 16, 2015, 07:42:54 am »
There is also liquid crystals between the glass plates. The crystals are distributed in a really thin uniform layer. The dark spot is those crystals leaking out because geometry of the plates was violated.

Indeed; IIRC there are sometimes also tiny little glass spheres mixed in with the liquid crystal -- their purpose is to hold the glass plates apart at the intended spacing.
 

Offline pinleeTopic starter

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Re: Darkened Monochrome LCD Display from Air Conditioner Remote Control
« Reply #6 on: November 20, 2015, 10:15:33 am »
I managed to find one universal remote from Taobao. It has the same design like my current old remote. I will try to use its screen to replace mine. Or, to use it directly.

http://world.taobao.com/item/43571608111.htm?spm=a312a.7700825.1997196601.14.RezRAv

 


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