Samsung UN J5500AF Series Service Manual page 111

UN40J5500AFXZA Fast Track Troubleshooting Manual Rev 6/15/15cr
TV
 Go to Menu > Support > Self Diagnosis >
Smart Hub Connection Test:

If Smart Hub Test Fails:
 Check Network Status (Menu / Network/ Network Status)
Reset Smart Hub

"Apps Reset" (Factory Mode / SVC / Reset / Apps Reset /Wait/Done/Soft Power Off)

If Netflix Issue:
 Check Certificate & Netflix ESN Status in Factory Mode.
If Certificate and ESN exists, "CO", "NfO", change the DNS to

If Certificate is missing, "C/" replace the TV's Main board.

If ESN number is missing: NF/ do not replace the Main Board.

Reset TV Clock and check for correct Time & Date. Netflix relies on correct settings..

Reset Smart Hub. / Reset Apps In Factory Mode

Go to TV Web Browser / Go to speedof.me / testmy.net

 Check Speed for at least 5 Mbps (HD streaming) / 25 Mbps (4K Streaming)
 Check Latency for less than 50ms
Smart Hub Connection Test
Router Internet / Samsung Server
 1) Network Test / Gateway Test
 2) DNS test
Begin Test
 3) ISP Blocking
 4) Samsung Server Test
Samsung Apps
8.8.8.8
 5) Samsung Apps Test