Samsung forum


Samsung LCD 37" TV - Photo Negative Screen

by SouthPaww44 / September 3, 2013 2:55 PM PDT


I'm trying to identify the cause of the "photo negative" screen that is now on my Samsung LCD, model LN37A550P3FXZA.

So far I have:
- Replaced power supply board
- Check capacitors, they are all good
- Ran electrical tape underneath the circuit boards that may have been touching metal pieces
- Cleaned out any dust

I am wondering if it may be the T-Con board or the actual LCD panel that needs to be replaced.

If a T Con board is bad, will the screen give the "photo negative" appearance?

Any help and tips would be greatly appreciated!

Discussion is locked
You are posting a reply to: Samsung LCD 37" TV - Photo Negative Screen
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: Samsung LCD 37" TV - Photo Negative Screen
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.

All Answers

Collapse -
I don't have the service manual.
by R. Proffitt Forum moderator / September 4, 2013 12:01 AM PDT

Did you check the service manual's troubleshooting flow chart?

Nod to main board or panel.

Collapse -
I don't have the service manual
by SouthPaww44 / September 5, 2013 1:54 PM PDT

I don't have the service manual and would prefer not to pay $20 bucks to download it. Based on my online research, it is either the T-Con board, or the LCD panel. Is there anyway to narrow it down and test the T-Con board?

Does anyone know, If a T Con board is bad, will the screen give the "photo negative" appearance or will the screen just be white?

Thank you!

Collapse -
by R. Proffitt Forum moderator / September 5, 2013 2:18 PM PDT

But without a service manual it would be nothing but guesses. The manual is what techs use. At least it has one.

Try AVS Forum since folk seem to guess there.

Popular Forums
Computer Newbies 10,686 discussions
Computer Help 54,365 discussions
Laptops 21,181 discussions
Networking & Wireless 16,313 discussions
Phones 17,137 discussions
Security 31,287 discussions
TVs & Home Theaters 22,101 discussions
Windows 7 8,164 discussions
Windows 10 2,657 discussions


Help, my PC with Windows 10 won't shut down properly

Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?