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No signal/picture through hdmi/component

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Old 01-04-2013, 03:56 PM   #1
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Default No signal/picture through hdmi/component

Hi I am new to this forum but figured I would give it a whirl. I have been hard pressed trying to find the answer to this question tried Comcast chat support, telephone, searched google forever. Does anyone know if there is a fix for this or something? Its very frustrating. I am using a Cisco RNG150 cable box. I read somewhere that it could be the handshaking issue between my tv and the box. But I don't know how to access a menu for the box or whatever its very bothersome If anyone could help it would be appreciated thanks
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Old 01-04-2013, 03:58 PM   #2
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Also, I am not stupid I checked all the cables etc. Comcast saying check its on the right input all that stupid stuff like come on am I that dumb I hate that they immediately tell you to do all the common sense stuff like really is it on HDMI input on the TV? come on guys
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Old 01-04-2013, 04:25 PM   #3
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anyone ?
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Old 01-04-2013, 07:14 PM   #4
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In looking at the box you mentioned, I see it has an HDMI and component outputs (set of three coax outputs)?

Have you tried the component outputs to see if you can get a picture that way? You'll need to disconnect everything from the HDMI output when you do this.

What is the TV you're feeding this to?
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Old 01-05-2013, 06:48 AM   #5
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Quote:
Originally Posted by RBTO View Post
In looking at the box you mentioned, I see it has an HDMI and component outputs (set of three coax outputs)?

Have you tried the component outputs to see if you can get a picture that way? You'll need to disconnect everything from the HDMI output when you do this.

What is the TV you're feeding this to?
I tried that already and there is no picture but there is some sound. It is being fed to a 42" Westinghouse LCD
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Old 01-05-2013, 08:38 AM   #6
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Is the m card installed?

http://media2.comcast.net/anon.comca...user_guide.pdf
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Old 01-05-2013, 08:40 AM   #7
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If it won't work via Component connection either than it is NOT a handshake issue.
Something is broken.

What I'd do:
Try a feed from a pair of rabbit ears, or from a DVD player, and see if you can get a picture. If nothing, then your TV is shot, if you get a picture, then you probably need a new cable box.

Have Comcast walk you through any adjustments they might want you to make to your MENU before sending you a new box.
(I cannot help here because when I had COMCAST I always had a Motorola box.)
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Old 01-05-2013, 10:03 AM   #8
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Quote:
Originally Posted by zip2play View Post
If it won't work via Component connection either than it is NOT a handshake issue.
Something is broken.

What I'd do:
Try a feed from a pair of rabbit ears, or from a DVD player, and see if you can get a picture. If nothing, then your TV is shot, if you get a picture, then you probably need a new cable box.

Have Comcast walk you through any adjustments they might want you to make to your MENU before sending you a new box.
(I cannot help here because when I had COMCAST I always had a Motorola box.)

Good point. But I have tried that already this is why it is so frustrating because I have a Blu-ray hooked up through HDMI and it works perfectly
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Old 01-05-2013, 10:08 AM   #9
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Quote:
Originally Posted by oblioman View Post
Yes it is correct.

I have a Comcast guy coming tomorrow but I have a feeling he wont be able to figure anything out as well as I can.
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Old 01-06-2013, 02:32 PM   #10
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Quote:
Originally Posted by mbeil315 View Post
I tried that already and there is no picture but there is some sound. It is being fed to a 42" Westinghouse LCD
If you can't get a picture using the component connections either, chances are good it's the cable box. You've already pretty much ruled out the TV by having success with a BD player, using the HDMI connection. Please let us know what happens with the cable guy. Be sure to show him that HDMI works coming from a BD player and just switch the HDMI cable end from the player to your box to show him that it doesn't work.
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Old 01-10-2013, 09:37 AM   #11
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It's the cable box or else the Comcast feed TO the cable box.
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Old 02-04-2013, 02:46 AM   #12
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thanks for all the information guys
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Old 02-08-2013, 08:56 AM   #13
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Thank you for the information its really helpful..
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Old 02-15-2013, 06:54 AM   #14
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So did the Comcast tech visit get to the root of the poblem. My guess is that he swapped your cable box and all is well.
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