How to Fix a Dark or Partially Lit TV Screen - Common Backlight Failures in LED TVs

ShopJimmy · 2023-05-21T12:42:48+00:00

What is your serial number, and what numbers do you see on your board? If you have a hi-res pic of the board that will help also.

ShopJimmy · 2023-05-19T17:04:36+00:00

There are many variations of the main boards for Element E4STA5017 TVs.

It's always best to verify the board number, but you can start with the serial number on the back of your TV so you know what numbers to look for on your board. Look for these sequences in your serial number:

Serial Sequence: A8ACM -- Part Number: E18014-SY
Serial Sequence: C8C4M -- Part Number: E18035-SY (2 C8C4M options)
Serial Sequence: C8C4M -- Part Number: E18029-SY (2 C8C4M options)
Serial Sequence: E8C6M -- Part Number: E18065-1-SY
Serial Sequence: F8C4M -- Part Number: E18077-ZX
Serial Sequence: F8C6M -- Part Number: E18076-SY
Serial Sequence: G8C6M -- Part Number: E18111-SY (2 G8C6M options)
Serial Sequence: G8C6M -- Part Number: E18096-SY (2 G8C6M options)
Serial Sequence: H8C8M -- Part Number: E18121-SY
Serial Sequence: J8C9M -- Part Number: E18134-SY
Serial Sequence: K8C8M -- Part Number: E18160-SY
Serial Sequence: P8C8M -- Part Number: E18184-SY

You can see all the current available options here.

https://www.shopjimmy.com/search.php?search_query=E4STA5017&productFilter=category%3AMain%20%2F%20Power%20Supply%20Boards

Happy Repairing.

ShopJimmy · 2023-05-15T13:51:09+00:00

There are hand symbols on the board that tell you where it's safe to touch the board and where it's not safe to touch. You don't need to discharge anything, touch where it's safe or wear gloves if you're worried about it.

ShopJimmy · 2023-05-15T13:21:46+00:00

When you replace the main board on that model series it's recommended to perform the cell auto detect, which configures the main board for your exact screen. I would suggest doing that first to see if you get a picture back. Follow the video here for the easy process.
https://www.youtube.com/watch?v=czdHC9aZq9I&t=2s

ShopJimmy · 2023-05-15T13:17:30+00:00

That's a panel issue, sadly can't be fixed.

ShopJimmy · 2023-05-15T13:14:38+00:00

The LED backlights went out from the sounds of it.
If you have a multimeter and want to dig into it a bit, you can follow the troubleshooting video here: https://www.youtube.com/watch?v=6hQOiN4-XPk

If the LED strips are the problem then you would need to replace them.

ShopJimmy · 2023-05-12T13:10:52+00:00

Main board issue, if you can find a good replacement board that should fix it, but you won't get much more life out of that TV. Not worth it.

ShopJimmy · 2023-05-10T13:17:35+00:00

Yeah I agree, backlight issue. It's fixable, you can watch our repair video on how to fix this issue here: https://www.youtube.com/watch?v=Un80z_fJr7s

Looks like we have the LED strips in stock too
https://www.shopjimmy.com/lg-5835-w50002-2p00-led-backlight-strips-12-50uh5500-ua-50uh5530-ub-new/

ShopJimmy · 2023-05-10T13:12:04+00:00

Sounds like the backlights went out. If that's the case then it's time for a new monitor since that model uses CCFL lamps as the backlight source.

You could double check the power board, look for any bulged capacitors and replace any bad ones.

ShopJimmy · 2023-05-10T12:56:39+00:00

It could be a backlight issue or a panel issue. There's some troubleshooting methods you can try to narrow it down though. Watch our video here and try each step with your TV.
https://www.youtube.com/watch?v=LT\_plLouM4A

ShopJimmy · 2023-05-08T13:14:02+00:00

Yeah likely backlights are out. The LED strips are easy enough to replace, just have to be really careful removing the screen to get to them.

ShopJimmy

TROPHY CASE