Riddled TV Repair Forum
Service Menu and Manual Schematics
  		   
 FAQFAQ   SearchSearch   RegisterRegister 
   Log inLog in 
HOME          TV Repair Tips          Forums          For Sale - TV Parts          For Sale - Arcade Parts         
SAMSUNG UN40F5000AF - Dark Half Screen    
Post new topic   Reply to topic    Riddled TV Repair Forum Index -> TV Repair
 
Author Message
sonny4040



Joined: 07 Dec 2015
Posts: 2
Location: Chicago
PostPosted: Mon Dec 07, 2015 1:17 am    Post subject: SAMSUNG UN40F5000AF - Dark Half Screen Reply with quote
Hi all,

Samsung UN40F5000AF
40" TV

I have had this TV for three years. A few months ago, I noticed a dark portion of the screen. It is dark in the upper half, however still bright about an inch inside the frame. It looks like a glowing dark box (see picture). After searching a number of forums, I wasn't quite sure whether people were having the exact same problem as I was.

I have tried bending the frame back and forth as others have suggested. I am at the point where I want to open the frame up to see what's going on inside, but I was hoping you all could help me find out exactly what I'm looking for when I do that. Thanks in advance.

-Sonny

Google
PostPost subject: Advertisement
JTS1957



Joined: 21 Jan 2009
Posts: 2395
Location: Far, Far Away
PostPosted: Mon Dec 07, 2015 2:48 am    Post subject: Reply with quote
http://www.cnet.com/news/led-lcd-backlights-explained/
kuhurdler



Joined: 28 Dec 2006
Posts: 2879
Location: Overland Park, KS
PostPosted: Mon Dec 07, 2015 12:58 pm    Post subject: Reply with quote
Yep, you have a few strands of backlight LED that have failed.

If this is the model I am remembering, if one LED fails, the whole string fails horizontally. I think the top two strands are also in series so if any one LED on either strand dies, both strands go dark.
sonny4040



Joined: 07 Dec 2015
Posts: 2
Location: Chicago
PostPosted: Mon Dec 07, 2015 4:36 pm    Post subject: Reply with quote
Thanks for your help, guys. Probably not worth getting it repaired, correct?
JTS1957



Joined: 21 Jan 2009
Posts: 2395
Location: Far, Far Away
PostPosted: Mon Dec 07, 2015 4:47 pm    Post subject: Reply with quote
Unless you're good at careful disassembly of panel.

Make sure the LED back light settings are lowered from 100% 'Default' on your next one.
Google
PostPost subject: Advertisement
kuhurdler



Joined: 28 Dec 2006
Posts: 2879
Location: Overland Park, KS
PostPosted: Wed Dec 09, 2015 8:03 am    Post subject: Reply with quote
It's all just a matter of your perspective. I'd gladly repair this one.
Display posts from previous:   
Post new topic   Reply to topic    Riddled TV Repair Forum Index -> TV Repair All times are GMT - 6 Hours
Page 1 of 1

 


Disclaimer: All information provided by RiddledTV is strictly for information purposes only. Please observe all warnings displayed on your electronic
devices. This information should only be used to help diagnose work, and all service should be performed by a qualified technician.
Privacy Policy       Copyright © 2020 RiddledTV.com       Advertise on RiddedTV.com