I would recommend making sure that the firmware is completely up to date on the television.
Also check the various options in the menu such as the energy saving modes, make sure all of that is set to off.
You can also try taking a look at the following article: http://support-us.samsung.com/cyber/popup/iframe/pop_troubleshooting_fr.jsp?idx=601678&modelname=UN32J5500AF&modelcode=UN32J5500AFXZA
Hope this helps!
Brand new UNJ325500AF is so dark I cannot believe it. Pic quality is terrible. On light pictures it is fine, only dark is the problem. Is there any way to fix without turning brightness &contract so high they bleach out the picture? Best Buy said they've heard this complaint before & to just return TV so I guess I will.