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Samsung 37" LCD TV LN-37A550 Screen Suddenly Dim

by twangthang / July 24, 2010 11:44 AM PDT

I've searched the threads, but been unable to find someone with the exact same problem. I've had my Samsung 37" LCD TV LN-37A550 for right at a year and a half, (yes, out of warranty), when out of the blue, the screen has gone to about half brightness. You can see the picture, but any type of dark scenes are very dark, and the picture is not vibrant at all like it was just the day before. I've used all the settings in the menu with no luck. I took the back off the unit and can see the backlight is working, but don't know if it used to be brighter. Just looking at internal components, I don't see any obvious failures. Any ideas?

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Samsung 37" LCD TV LN-37A550 Screen Suddenly Dim
by Samsung_HD_Tech Samsung staff / July 26, 2010 6:47 AM PDT


I'm sorry to hear that you're having this issue.

Unfortunately, I'm not able to make a diagnosis based on something I can't see. What I'd recommend is to have your unit serviced by a technician so that they'd be able to identify the problem.


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37A550 dark picture
by timusatpug / July 4, 2011 12:59 AM PDT

I have the same problem, contacted local support and they said I have to change the panel!!??....this is bad since the TV is just 2 years old and based on my usage of 6 hrs a day (MAX), I wouldn't have crossed 4800 hrs...and a panel should last for about 60000 hrs???
The worst news is that SAMSUNG will not provide more than 1 month warranty if I replace the panel!! I am sure they can be more reasonable than this!!
BTW: I have got this checked by 2 local service technicians and NONE of them told me that this is a panel problem.
Whom to believe?
day0 - dark picture after about 15 mins
day7 - dark picture after 2
day10 - dark picture after 1 min
day12 (NOW) - dark picture after 30 seconds
I have the picture mode set as STANDARD, have energy saver to OFF, and to watch anything NOW, I have set backlight=10, brightness=100, contrast=100.
Please help!

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(NT) Always put the Transaction numbers and country in your posts
by R. Proffitt Forum moderator / July 4, 2011 3:15 AM PDT
In reply to: 37A550 dark picture
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dark picture with 46" Samsung LCD
by jjscarlett / April 14, 2012 6:48 AM PDT
In reply to: 37A550 dark picture

I've suddenly got the same issue with my 46" Samsung LCD TV.
I've already changed the 7 1000 micorF capacitors out to fix the 5 minute turn on problem.
I too use brightness=100, contrast=100, backlight=10, envrio=OFF
Did anyone find a fix?

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