CRT iiyama HM703UT Vision Master Pro 413

Ohhh, vision master pro 413, sounds sci-fi

*goes back to corner*

Try going into your Monitor adjusments and press "Image Adjust" now keep it going till you regain that inch..

My apologies for delay-- you got lost in the shuffle somehow.
No recent resolution changes?
tried degaussing (doubtful-- but it can't hurt) (buttons in front looks a little scary-- it's demagnetizing the screen)
How to Degauss a Computer Monitor - WikiHow
it may be the tube or internal power supply.
never open a monitor case-- capacitors can be fatal

Nah, still got the problem. Adjusting with the monitor buttons doesn't help, just stops an inch top and bottom whatever I do. Thanks for trying, I'll just have to live with it for now.