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Comcast - Green Screen

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Old 02-06-2008, 10:13 PM   #31
How can anyone watch standard def?
 

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I just wrote in today about the exact same problem. See my thread re "green screen dch 3416" I have a BRAND new tv, pan th50pk75u, and got another BRAND new dvr today, since the previous model (same) did the green screen thing. The comcast guy did not know what he was talking about and blamed the TV. I called Pan, they laughed and said they never heard of having to "update the firmware for the tv, via usb cables from your computer" as the comcast guy suggested. I think the problem is that comcast cannot update their new dvrs fast enough, to comply with the new hdtv's hooked up via HDMI. I guess I shd try just using all component cables? I'll see how the new box works, otherwise I may have to continue unplugging the cable box, to reboot/reset it, as that does seem to get rid of the green screen, and allows you to view the normal screens again.
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Old 02-07-2008, 01:46 AM   #32
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Quote:
Originally Posted by lisa View Post
I just wrote in today about the exact same problem. See my thread re "green screen dch 3416" I have a BRAND new tv, pan th50pk75u, and got another BRAND new dvr today, since the previous model (same) did the green screen thing. The comcast guy did not know what he was talking about and blamed the TV. I called Pan, they laughed and said they never heard of having to "update the firmware for the tv, via usb cables from your computer" as the comcast guy suggested. I think the problem is that comcast cannot update their new dvrs fast enough, to comply with the new hdtv's hooked up via HDMI. I guess I shd try just using all component cables? I'll see how the new box works, otherwise I may have to continue unplugging the cable box, to reboot/reset it, as that does seem to get rid of the green screen, and allows you to view the normal screens again.
Me suggestion would be to hook up the cable box via component and use a seperate toslink for audio. You will find faster switching with component, same quality video and same quality audio. HDMI is a good source, but me see's many post's where it be a problem. In other words - when HDMI works - it be fine. But if one's picture & audio become problematic - switch cables. If the problem continues it is more times than not,,,,the cable box.
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Old 02-09-2008, 01:16 PM   #33
Can't watch SD
 

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For us, the screen goes back to normal if we turn off and turn on the cable box, or if we cycle through the TV inputs.
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Old 02-11-2008, 06:39 AM   #34
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Raise your hands if you are using the free HDMI given out by Comcast...if so, that is probably the problem. There have been issues with it lately. I have heard of three in the past week alone.
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Old 02-14-2008, 07:17 AM   #35
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I use a cable that came with a DVD player, not a Comcast cable.
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Old 02-14-2008, 09:09 PM   #36
What is HD?
 

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crappage, my 4 or so month old 47" JVC just had a green screen today the second my wife turned it on, well, the second the cable came on anyway... Motorolla cable box (cox communications, not comcast though) via hdmi.

everything's been fine since the day we got the tv and the high def, but today it decided to flip out. i pulled the power from the cable box for maybe 5 seconds and then put it back in and after that the tv seemed to work fine for a little while, maybe 45 minutes like has been mentioned here. but immediately after that the screen turned a very blue tint, we could still see the picture, just was extremely blue this time, instead of completely green.

i decided to switch the 2 hdmi cable connection around (one from the motorolla box and the other from an upscaling dvd player).

unfortunately i didn't have enough time to test it out to see whether it would stay happy for long, only tested for another 10 minutes or so and it was working.

perhaps i'll try to buy some component cables and see if that's it...

i use an hdmi cable i bought seperately, online, not some expensive monster junk, but i know this is a good quality cable.

for a bit there i was scared the tv was going bad already
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Old 03-15-2008, 12:50 AM   #37
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This is my 1st post and I'm only wishing I had found this site about a year ago.

I have the same "green screen" problem when I go from watching SD to HD and vice versa.
The "green screen" lasts for a split second and the loud cracking noise occurs as well.

Back in April '07 I bought a 32 inch Vizio. The problem was very bad.
Then in July, I replaced that tv with a 37 inch Vizio. The problem subsided greatly, but is still a problem from time to time.

I have just learned to live with it.
My HDMI cable was purchased from a local tv store, not the Comcast cable. Purchase mine for about $25.

Anyway, this site is wonderful and I look forward to learning more from people here
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Old 03-17-2008, 03:41 AM   #38
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I posted the reason this happens here.





green screen when exiting comcast dch 3416 dvr
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Old 09-12-2008, 01:55 PM   #39
What is HD?
 

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I had experienced the same problem with trying to watch standard def shows on my DVR. Sometimes I would get a green screen, sometimes not. And sometimes I'd be able to get rid of the green screen by quickly using the return or previous button, while other times I'd have to turn off and unplug the unit.

Recently, I had a tech come out to the house for the phone lines and also had him check on this, as the customer service people were of no help over the phone. He accessed a screen that I had never seen and made some changes. At the time, I didn't know what.

Accessing standard def shows on my DVR worked fine up until today. I tried to find that screen, but was having no luck. So I looked around online and found this site: cable-help [dot] com/2008/01/cableone-comcast-hdmidvi-settings.html (the dot is spelled out because I haven't made the minimum required posts to include a URL)

The screen he had accessed was the user setting screen. Hopefully that page will help some of you if you're still having problems. And hopefully it has solved my problem again, too. I don't know if whatever he did re-set, or what, but I think what he did was change the 4:3 Override setting to 480I.

Couldn't hurt to give it a shot. It got to the point where I didn't even want to try to watch my standard def recordings, because I didn't want to deal with the hassle.
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Old 09-15-2008, 08:30 PM   #40
What is HD?
 

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Quote:
Originally Posted by chambers View Post
I had experienced the same problem with trying to watch standard def shows on my DVR. Sometimes I would get a green screen, sometimes not. And sometimes I'd be able to get rid of the green screen by quickly using the return or previous button, while other times I'd have to turn off and unplug the unit.

Recently, I had a tech come out to the house for the phone lines and also had him check on this, as the customer service people were of no help over the phone. He accessed a screen that I had never seen and made some changes. At the time, I didn't know what.

Accessing standard def shows on my DVR worked fine up until today. I tried to find that screen, but was having no luck. So I looked around online and found this site: cable-help [dot] com/2008/01/cableone-comcast-hdmidvi-settings.html (the dot is spelled out because I haven't made the minimum required posts to include a URL)

The screen he had accessed was the user setting screen. Hopefully that page will help some of you if you're still having problems. And hopefully it has solved my problem again, too. I don't know if whatever he did re-set, or what, but I think what he did was change the 4:3 Override setting to 480I.

Couldn't hurt to give it a shot. It got to the point where I didn't even want to try to watch my standard def recordings, because I didn't want to deal with the hassle.

yup i was just going to say that the crackling is due to the settings on the box hit cable power menu and it will take you to the box settings. 480i std resolution so just switch the 4:3 to it. Now when you go to an hd channel from a digi channel the tv will try to scale up to the higher resolution so you will always experience a delay. Hope that helps.
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Old 02-15-2011, 08:26 PM   #41
What is HD?
 

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Default Comcast green screen fix

Stop using HDMI cable. Use RCA jacks. Problem solved.
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