My tv has a bow in it every time a banner comes

It is not unusual in these sets for things not to be perfectly straight---if the set has recently been repaired for a Convergence problem--someone may not have adjusted it correctly.

Understand: if it is a 43uwx10b Hitachi:

The green convergence is adjusted first for a grid of straight lines up and down and left/right---if the green grid is not straight you are going to see a bow when things scroll across the screen.

The other possible problem you may have is a convergence problem--if you go into the customer menu and try to adjust convergence--not the magic focus-- are the blue and red adjusting or not?

I know the HItachi sets very well--I own two of them and have repaired hundreds of them.

Let me know if you have more information or need advice--I am here to help people.

If this has helped you rate this solution as I do this here for free.

REGARDS, SD TECH