Replacing A Flyback & H.O.T. Correction Video 

Thanks for taking the time to share.

WILL, what does the Screen trim pot adjusting? and what does the Focus trim pot adjusting? they are both adjust the voltage but what is the voltage adjust to do what to the screen circuit and focus circuit. The Vertical output transistor and the horizontal output transistor has to be the correct part number because a common problem is that you can't get those part numbers anymore so when substituting different part numbers to replace bad vertical output transistors and horizontal output transistors it causes "foldover" issues with vertical foldover and horizontal foldover, Any reasons why these foldover issues happen when using different transistors?

WILL, do all arcade monitors have a fuse for the horizontal output transistor H.O.T? I have seen monitors that has a fuse for the h o t transistor but not sure if all arcade monitors have them.