Need tv to get off 4:3 default display,so i can see wide screen

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.

Why are you using 4:3 letterbox? It might be the default aspect ratio but widescreen tvs should be set to 16:9 aspect ratio.

Sir press the screen mode button in your remote below input select button, press the screen mode button repeatedly to select smart, 4:3, wide, zoom, or 14:9.

• Smart- Display conventional 4:3 broadcast with an imitation wide screen effect. The 4:3 picture is stretched to fill the screen.
• 4:3- Display conventional 4:3 broadcast non-wide screen TV in the correct proportions.
• Wide- Display wide screen 16:9 broadcast in the correct proportions.
• Zoom- Display cinemascopic letter box format broadcasts in the correct proportions.
• 14:9- Display 14:9 broadcasts in the correct proportions. As a result, black border areas are visible on the screen.

Try pressing HOME, Then go to SETTINGS From the list, select SCREEN
There are now several options that may be causing the picture to zoom. Try adjusting each setting in the following order, checking if the problem has solved after each change.
Set: DISPLAY AREA to NORMAL WIDE MODE to NORMAL AUTO WIDE to OFF 4:3 DEFAULT to NORMAL
If you are still having problems, you may need to speak to Sony about having the TV serviced as an internal circuit may be broken - if this is the case it may be covered by the warranty.
I hope this helps - if you require more info, here is a link to the Manual for your tv http://www.sonystyle.com/wcsstore/SonyStyleStorefrontAssetStore/pdf/warranty/0451c422be8f7211d50375af6ace50aef8fb6504.pdf

Dear Friend: when TV is unplugged for a while, it goes into "factory default" settings. That's why you have 4:3 format of your picture settings, instead of "wide" or 16:9. check TV "screen" or "picture format" button, if it present on your TV(not a cable or satellite) remote control. If not, enter "menu" and find "display settings" and adjust it accordingly. Also: same issue might happen to your "boxes" Cable or Satellite. If those were without power for a while, same thing might happen to those. Check "menu" or call your provider, if needed.
Good luck,
Alex.

Look at your remote control and look for 'ASPECT', 'ZOOM', 'DISPLAY' to readjust your TV display mode. No boards needed. It is your setting problem. It is setting in LETTERBOX mode right now to show 2.35:1 film wide screen mode.
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com just make sure to use caps with low ESR, 105c rating such as PANASONIC FM or FC series.
Please post back what you find.

Hello
Most of the telivision transmissions are comes at an aspect ratio of 4:3. Wide aspect ratio is 16:9. If you try to see a picture with aspect ratio 4:3 to wide 16:9, it will look like stretched. it is not the fault of the tv. Most DVD recording have the aspect ratio of 16:9 [Wide]. This aspect ratio will be displayed correctly when your tv is also set to wide mode. If you select normal mode at this condition, the picture will be displayed elongated. Ok Your Tv has no probelm.

This is actually due to the signal format being sent down from the transmitters/broadcaster. They by defauly output 4:3 which your tuner in your TV interprets and rejigs it into 16:9. Te adverts as they come on are seen by the tuner in your tv as a change in aspect ratio, and therefore your TV is trying to best display these. However, if you go to your screen settings, you can change the screen auto format to your choice and this chould ensure that the picture always gets set to your choice. If set on default, it will vary between 'wide' and 'smart'.

I'm going to guess that you have a wide screen Dell laptop with a 16:10 aspect ratio and a default resolution of 1280X800. The wide screen is great BUT most presentation grade projectors do not have a native (pixel for pixel) 16:10 mode. Instead they still prefer a display input with a 4:3 aspect ratio like your old square CRT or standard definition TV. Why do they prefer a 4:3 input? Mainly because Powerpoint prefers to display a slideshow in a 4:3 mode. Because of this Dell, in their infinite wisdom, created the 'presentation mode' utility in an attempt to automatically convert the VGA output of your laptop from 16:10 to 4:3 on the fly. In my experience this is an annoyance at best and at worst can seriously impact the size and quality of the projected image.

The best thing you can do when you connect to a projector is ignore the presentation mode alert and manually set your laptop's resolution to 1024X768 for an XGA rated projector or 800X600 for an SVGA rated projector. This will cause your desktop to look stretched on your laptop but will give you by far the best projection image.

make sure you do not have the automatic screen mode set to wide screen on tv menu .Also if you have cable box set to wide mode only then the tv will only display wide mode.