I have a big box 52in tv and the outer edges of the screen went wide a stretched, idk how to fix it.
I don't think this set has a aspect or for that matter a width adjustment so that leaves a shop repair---what has happened is width likely has increased and oddly enough it usually means a cap in the Horizontal sweep area has opened--I say that as it is the most common way--if a short set will shut down.
On most of these there were issues with bad solder connections developing in the Sweep circuit where your issue is likely to be.
I would if you are able get in the set and remove that board and look carefully under the Transformer for any bad or slightly cracked solder connections, I can't tell you how many of these sets I have fixed that had this issue--lots.
I attach a photo of what this type of part looks like, similar but not the exact one---there is only ONE part in the set that will look like this.
What most people do not understand is a open connection or even a part that is open (as opposed to shorted) can cause all sorts of issues.
Part is called a High Voltage transformer or Flyback Transformer, both names are the same part and sets have been using this type of part for well over 50 years.
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