My RCA full HD 1080p won't change it's picture settings from wide or dot by dot.

Sounds like you have the "Wide" mode set to Zoom or wide zoom. Also if you are on Comcast cable the cable box has a setting of Zoom and full. Set your TV's zoom setting to "Full" and the cable box to Full. I don't have an LG so you'll have to find these settings yourself..

It depends on your source video resolution. If you're willing to play in 4K, you can upscale your 1080p or 720p video to 4K resolution in advance. Here is the video tutorial:
After conversion, it will be played in 4K on your TV. Of course, it's all based on that your TV supports 4K.

Contact RCA, apparently this model has problems.

https://www.youtube.com/watch?v=7w-Vc5CNYH8

the video format from your medium doesn't support the tv's max resolution

Hello

To get the picture full screen come to screen aspect ratio settings.

The Screen Format feature allows you to change how the image of a 4:3 picture

is displayed on your 16:9 screen. The options are Normal, Zoom or Stretch. If

your TV receives an image with a 4:3 aspect ratio, the image can be displayed in

one of three ways:

Normal The image of a 4:3 video signal is centered with black bars on the
right and left sides of the screen

To get ito this setting mode
Enter the main menu and go to preferences select the screen format; option-2; and change the settings to get a full picture.
OK.

hi,
1080p full hd video can obtain only through hdmi. for that u need a full hd blue ray player or full hd sat receiver . the tv automatically changed to full hd according to the input connecting to it .go to hdmi setting and check whether hdmi connectivity is ON. also check the hdmi setup of ur input device.
ok

go into your customers setting and change you aspect setting to either full or auto

The signal coming from your cable box, FTA receiver, or whatever source, is usually what drives your TV's resolution. If this happens with a Scientific Atlanta HD cable box, for instance, there's a "Setup" button on the remote control that allows you to indicate how your TV interacts with the box and responds to resolution changes, depending on whether the signal is SDTV (4:3) or HDTV (16:9).
In my case, with my Sanyo 50" 1080p HDTV, I get the best of both worlds by using the setting (I forget what it's called) that gives me two "pillars", one on each side of the picture, when the latter is standard definition, and full wide screen picture when the signal is HD. These pillars are of some shade of grey, in order to activate the pixels on the side of the picture and avoid the burning of the standard, 4:3 formatted screen on my plasma pixels.
Failing that, look into your user's manual and see whether this is something you can set within the TV's configuration menu.
Last, investigate the different options offered by the TV's own Setup menu, usually available from the TV's remote control.
Good luck!

I have a Vizio. If I use the HDMI input I can only get normal and zoom w/ picture buttom on the remote but get full picture on all cable supplied HD channels but not on none HD channels. However, if I switch cable input, I have the TV set up with both inputs from the converter box, I am able to have the options of normal,panoramic,wide and zoom on all non HD channels. I don;t like the black bars top and bottom of the HD channels with this imput mode so I switch back to HDMI. Maybe your TV is simmilar.

the tv has a configaration that conveys the sets focus on both audio and video performance. full hd resolution of 1920-1080 pixels.
hdmi inputs allow connection of the generation of 1080p sources for the systems which offer 1080p outputs