Samsung TV BN64-01396A does not respond to cable box blue light is on TV no picture but flashing at bottom of TV

SOURCE: Mitsubishi VS-60805 Rear Projection won't operate in HD mode with Cable Box

Since this is an older first generation (1999) HD TV it may not be compatible with newer HDTV receivers because the standards back then were different - Make sure the HD cable box is plugged into the HD component inputs on the back of the TV (not the DVD inputs) and that the menu setting on the TV is set to DTV (not RGB) video. This TV will only accept 480i and 480p signals on the DVD input. Also the HDTV input will only accept 480i,480p and 1080i (it will not work with a 720p signal,make sure your cable box is not set to that mode)

SOURCE: Codes to operate a cable box with TV remote

Try code 038. If that doesn't work try 039.

SOURCE: mikomi flashing blue light tv will not work

This could be your power DC.

I had the same trouble when I set the tv on its start normal.
but after a few min. the screens falsh on off, on off.

I change the adapter and the problem is solved!
Check this with a other DC power adapter.

I hope this will work. But for me it was the power DC adapter.

BoraDURSUN

• 47 Answers
• Posted on Jan 07, 2010

SOURCE: Samsung 650 lcd 40" tv picture blacks out for a few seconds.

Dude, better check your cable and also your TV's power management settings. This might also happen due a issue with the HDMI output of the satellite box.

SOURCE: Vizio tv orange light on, not blue, won't bring up picture

if orange it is on stand by mode ,the cable that you changed is it power cable if yes then you used wrong one it may affect, i think you need to check power supply board . also get other opinion too. good luck