Hi,
I would suggest you to contact the manufacturer for the support on the issue.
Reference links:
For live chat support, you may call 1-800-SAMSUNG (726-7864).
Samsung Support: http://www.samsung.com/us/support/contact
Samsung Digital Support: http://support-us.samsung.com/cyber/popup/iframe/pop_troubleshooting_fr.jsp?idx=167364&modelname=LN40C650L1F&modelcode=
Regards.