Go to your xbox menu and change the settings thru your xbox settings. Mine did the same thing after awhile i was messing around in the xbox menu and found the 1080i resolution setting. Make sure your switch on your cable from the xbox is set to HD
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You have settings in your TV and satellite receiver to set the resolution for the picture. I would first go into the TV settings and use 1080p for the TV resolution. Also, in the receiver setting, you have the HDTV setting. From the main menu, press 6 (System Setup) and then 8 (HDTV Setup). For TV Type change to 1080i. The Aspect Ratio should be 16:9. I hope this helps.
If you're using an HDMI cable your display will automatically adjust the settings based upon the video source. Make sure that your source is capable of outputting 1080p. If it's an HD Cable Box or DVR, the maximum resolution it can display is 1080i. If you have one of these HD boxes, set it to only display 1080i as there will be a delay every time you change channels from a channel that is not naturally at 1080i.
If your source is a standard DVD player, it can only display images in 480i (or 480p if it is Progressive Scan) and therefore your TV will display the picture in 480 resolution. If your source is an upconverting DVD player it will display up to 1080p however, Keep in mind that DVD's are in 480 resolution and that regardless of upconversion (or upscaling, though improved, the picture will not be in HD.
The only way to achieve a true 1080p (not dpi... that's dots per inch... that's a printer term. The "p" is for Progressive Scan as opposed to an "i" for Interlaced) is from a 1080p source, i.e., a Blu-Ray disc player playing a Blu-Ray Disc with the use of an HDMI cable. Component Cables can achieve 720p/1080i only with your TV as it does not support 1080p over component cables.
As an aside, there are some media players that support 1080p output and some DirecTV Boxes and DVR's d oas well for 1080p Pay Per View movies.
1080P is a quality you'll only get with a blue ray quality video. Therefore, you won't get 1080P on cable tv. If your cable provider has HD channels available, you'll be able to get 720 or 1080i quality video (on those channels only). For the best quality, make sure you are using an HDMI cable. Just be sure your cable box supports an HDMI output. Your Vizio definately supports that type of input. If you have a PS3 or alternative blue ray player, you'll be able to watch 1080P.
tell cable box 480 i putput not 720 p even tho big screen has hd inputs its not true hd ok unplug plug back in see if get cable box to defult u or take card in front in and out most likely tv cant handle 720 p or 1080 i if its on 1080 i bring to 720 still no pic tak ethe cable box out settings to 480 i ok try that 1st
The TV supports 1080i so if your hardware is plugged into the Component Cable Connection for Digital TV on the back the signal will come out 1080i as long as the hardware supports the size.
For example, my 360 is connected like this and when the dvd player is in use it upscales from the 480 format dvds use to 1080. More on the HD-DVD for the 360 and how it handles the sizes here: http://www.engadgethd.com/2006/09/21/xbox-360-hd-dvd-playback-maximum-1080i-via-component-1080p-vga/
Kind of an old article since the newer 360s have hdmi and support 1080p that route.
If you have another television you can try, do that. Maybe there is something wrong with the inputs INTO the T.V. If you don't have another T.V. to try, hook up a DVD player to that same location you were attempting to hook up the 360. If that too doesn't work, you know it's the T.V. If the DVD player does work, check one more thing. Make sure the switch on the actual XBOX 360 cable is set tot he proper switch. You have a choice of 480 or HDMI. If you have a 480 T.V. and have it set to HDMI, I don't think it shows a picture.
Hope this helps.
For this unit and the addition of the secuity features of Blu-Ray, the 1080i you set can handle is through the component input from a DVD player or an XBOX. In the configuration menu of the PS3, change the resolution to 1080i and see if your set will reset to it. The 1080i on the Blu-Ray is only possible on the HDMI cable as far as I could find, again due to the security restriction. The Mitsu is not going to run it in 720p due to the PS3 is running component and cannot control sync to this set.
I have the EXACT same problem with my Sony SDM-P234 23" HD/computer monitor. I know it works (and it works great) with my DVico PCI card with my computer. It outputs in 480i, 480 p, 720p and 1080i with clarity on a simple indoor RCA HDTV antenna. I get the same quality (1080i) picture for the same three seconds as does lewy. I can also add that the digital coaxial output delivers 5.1 audio to my amp and it stays on even after the picture cuts out. Please help.....Comcast sendsa 'technician' out to service it and...well....did I say he's a 'technician'? He changed the box twice and says it must be my equipment. I guess its an act of God that it works with anything else.... I mean....its been checked out by a Comcast 'technician' after all.