Question about Televison & Video
How is the TV connected to the cable box (HDMI, component video, etc.)? Make sure that the cables are securely connected and that the TV is on the correct input. Try swapping the current cables for new ones. (The HDMI cable has come loose on my entertainment system at times.) If you route HDMI cables via a sound receiver (cable box -> receiver -> TV), try a direct connection to the TV.
For my TV, I have to turn on one set-top box before I turn on the TV to get the signals to correctly synchronize. (Try turning off everything connected to the TV and then turn on the accessories first. Then turn on the TV.) For another set-top box, it needs to be turned on before the TV. (So try both options.)
Make sure that your set-top box is on and try a different TV or input if possible. If a second TV doesn't work with the box, contact the provider and check for a service outage. (Also try a different set-top box (like a blu-ray player) to check if it is the input on the TV.)
Note: I've had mice or other things damage wiring; this takes out the cable and phone lines. If this is outside damage, your service provider should repair the damage for free.
I hope this helps. Please add a comment with more information about your TV and the connections that you are using for additional support.
Posted on Apr 25, 2013
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Posted on Jan 02, 2017
Okay,i assumed this is what you have:
HD cable box with HDMI cable connection to the Samsung TV.
Listen careful as follow:
First you want to make sure using the same HD comcast box with HDMI connection for our Samsung TV as well as your other TV.Be sure the other TV do received the missing channels from the Samsung TV.You must be SURE you have tested both TVs with the same HDMI cable with the SAME HD cable box.
Now that you have confirmed the both TVS are using the same HD comcast box and the same HDMI cable but the connection that goes to the Samsung TV are missing some channels,at this point,use another HDMI connection behind your Samsung TV and see if you have the same problem.If so,please also try the left side of the HDMI connection and see if you could get the other channels.
Let me know!
Posted on Nov 11, 2008
Can you tell me, is the set top box connected directly to the tv? (i.e. not to a surround sound receiver or anything)
Posted on Mar 13, 2009
Did you call Scientific Atlanta to find out if this could be a software issue in their box, or if there is a failure occurring?
I have had cable boxes do similar things to what you are describing. It turned out to be the box was defective and had to be changed. They were not serviceable. I believe these cable boxes were made by Scientific Atlanta.
Posted on Nov 14, 2009
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