Weird stripe on monitor - help?

[GhaleonUnlimited]

Hey, working on my cab, and I banged the board by accident, and when I reset the cab, now the monitor has a weird demarcation line I can't get rid of with vertical hold / position / size knobs.

Here's a still and a video. Does anyone have an idea? It's an NBA Jam cabinet. When I go back to jam, I can get a picture without this distortion. Thanks! I'm comfortable with soldering but I've never worked on the CRT before. Worse comes to worst I can hire someone I know to look at it

View: https://youtu.be/baQfyc4uTug

 

[Mukuro_W]

Those are v. Blanking lines plus v linearity issue, you should locate the v. Out ic and look for pcb crack and or dry somder joints or leaking cap in that area.

 

[GhaleonUnlimited]

Thanks so much for having a look! I'll try that