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Crumbtrail TV Forums: TV Equipment: TV Repair Forum:
40" LED TV display issue

 

 


Ironmaniac
New User

Sep 15, 2017, 3:31 AM

Post #1 of 6 (363 views)
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40" LED TV display issue Can't Post

Hello,

I own an AOC 40" LED TV.
Model: LE40A6340/61, Power rating:100-240V ~50/60Hz 75W.

The issue is that the upper half of the display has gone dark. Its unusable. I wish to repair it myself. Please guide me.
I am embedding a photo of the screen below.


Thanks.



jts1957
Veteran


Sep 15, 2017, 6:56 PM

Post #2 of 6 (344 views)
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Re: [Ironmaniac] 40" LED TV display issue [In reply to] Can't Post

You need to visually examine the LEDs inside the fragile panel to see if they are truly out.
1) to see if is edge lit type or strips of LEDs;
2) to see if, if strips, are all the same and a strip that is not lighting can temporarily be exchanged with a strip that is lighting for example. Of course, that may put power supply at risk.


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Location: Far, Far Away


Ironmaniac
New User

Oct 1, 2017, 5:45 AM

Post #3 of 6 (292 views)
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Re: [jts1957] 40" LED TV display issue [In reply to] Can't Post

Thanks, JTS.

What skills do I need?


jts1957
Veteran


Oct 1, 2017, 7:50 AM

Post #4 of 6 (289 views)
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Re: [Ironmaniac] 40" LED TV display issue [In reply to] Can't Post

Start with one of these (or better) as there are many screws:



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Location: Far, Far Away


Ironmaniac
New User

Oct 4, 2017, 5:11 PM

Post #5 of 6 (270 views)
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Re: [Ironmaniac] 40" LED TV display issue [In reply to] Can't Post

Tongue
Thanks JTS.
I can unscrew the whole unit apart and screw it back together. The product is out of warranty.
I have basic soldering skills. In fact, I have worked on PCBs as a rookie electronics enthusiast. But, manning an LED repair on my own is a different ball game here in India. Finding a reliable and affordable workshop is very difficult.
Please help, if you could.

Roy


jts1957
Veteran


Oct 5, 2017, 12:12 AM

Post #6 of 6 (264 views)
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Re: [Ironmaniac] 40" LED TV display issue [In reply to] Can't Post

Bear in mind that the TFT panel has to be handled / unplugged / stored CAREFULLY. You break any of the bonded tab connections or the glass itself and it's all over.
Large, flat, dust and static free work and storage areas will help. Make sure you keep everything in the correct orientation during all stages.
On many units, the back lights will operate with the TFT disconnected.

You must prove that ALL LEDs are working. A darkened area helps.


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Location: Far, Far Away

 
 
 


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