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Old 11-05-2019, 01:07 AM   #1
DeatRaton
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Default Top screen color fading

Hi guys this is a TV that is at my friend's house he needs help repairing I told him I'd ask if it's even worth fixing. I will have all specs tomorrow but could this be panel issues and unfixable. Any thought?
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Old 11-05-2019, 01:36 AM   #2
diif
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Default Re: Top screen color fading

It looks like it could be edge lit with the top edge not being illuminated.
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Old 11-05-2019, 02:02 AM   #3
DeatRaton
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Default Re: Top screen color fading

Quote:
Originally Posted by diif View Post
It looks like it could be edge lit with the top edge not being illuminated.
I will get more info on this TV tomorrow, if it is what you are saying. Most likely it will be salvageable?
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Old 11-05-2019, 03:12 AM   #4
diif
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Default Re: Top screen color fading

Quote:
Originally Posted by DeatRaton View Post
I will get more info on this TV tomorrow, if it is what you are saying. Most likely it will be salvageable?
Yes, either by replacing the individual dead LED(s) or the whole strip.
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Old 11-05-2019, 05:44 AM   #5
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Default Re: Top screen color fading

How new is that TV? Looks like later-2010s to me, and if it is, 99 percent, it's shit LEDs! Or LEDs with shit mounting!
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Old 11-05-2019, 07:28 PM   #6
DeatRaton
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Default Re: Top screen color fading

Quote:
Originally Posted by RJARRRPCGP View Post
How new is that TV? Looks like later-2010s to me, and if it is, 99 percent, it's shit LEDs! Or LEDs with shit mounting!


This is a UN75F6300
Version UH02
2013.

I found a few posts on this actual TV but they never seemed to get to the bottom of the issue. So I did test the LED capacitors and I got 336 in the lower capacitor and fluctuation between 533v-561v on each of the top three capacitors. Now I'm assuming I'd have to open the whole TV up anyway to check on the LEDs?
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Old 11-06-2019, 01:41 AM   #7
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Default Re: Top screen color fading

https://www.youtube.com/watch?v=GIfZHsD49WU
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Old 11-06-2019, 04:31 AM   #8
zomi
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Default Re: Top screen color fading

https://tinyurl.com/y4o9fztz

i think they should be the strips
confirm when you have the tv open

best to replace them all
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Old 11-07-2019, 01:06 AM   #9
DeatRaton
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Default Re: Top screen color fading

Quote:
Originally Posted by zomi View Post
https://tinyurl.com/y4o9fztz

i think they should be the strips
confirm when you have the tv open

best to replace them all
Thank you I will confirm as soon as I open it up, just waiting for the weekend to have my brother help me carefully remove the huge screen don't want to crack this beast.
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Old 11-08-2019, 06:26 AM   #10
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Default Re: Top screen color fading

Quote:
Originally Posted by DeatRaton View Post
So I did test the LED capacitors and I got 336 in the lower capacitor and fluctuation between 533v-561v on each of the top three capacitors.
If you check the dc voltage across the two legs of each of those capacitors it cannot measure more than 400V, the rating of each capacitor, otherwise the capacitors would explode.

I can't quite read the print on the circuit board photo but it looks like the led drive voltage is 237V @ 250mA


Shopjimmy do a repair kit for this board which may give you an idea of what to check out.
https://www.ebay.com/itm/Samsung-BN4...-/361400226453
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