After making sure the game board was fine, my main goal was making sure the monitor worked. Arcade monitors are so rare in the Netherlands, a non-fixable unit would change the whole project.
This machine contains a 25 inch Hantarex Polo monitor. This model look pretty awesome, but for some reason every polo cabinet I got so far had a broken monitor. The WWF was no exception.
To get it even testable was quite a hurdle. First off, I live at my parents place during this pandemic so there are cats everywhere. To store it upstairs, I had to make this box:
Secondly, this was the RCA USA 110V model so I needed a proper transformer as I live in 230V Europe. In total Mourix style I built the most elaborate isolation transformer:
The hanty has the famous tick of death, meaning the overcurrent protection kicked in. I went over this flowchart and found the original HOT had already been replaced, but the holding clip tore off.
In the end, the culprit of the monitor problem turned out to be the flyback having an open winding. I was lucky to have a spare board with a new flyback I could compare and replace it with.
After this it was working with a stable image and proper B+. To make this screen pop I also gave it a cap kit and resoldered all the joints:
And this is the end result. Besides some minor screen burn, it has an amazing picture: