I did something stupid

You know the type of fly back transformers that don't have the bleeder resistor? That caused a big problem for a motherboard that was working fine.

I unscrewed the groud wire from the crt and discharged the crt with it. There was a big arc and it was safe to remove and handle because I was working on an internal hyperdrive anyway.... The issue I'm having now is there's a single horizontal line across the screen. As anyone would think the issue would be a bad analog board... Apparently it's not. Somehow the motherboard is causing the horizontal like across the screen. Also when powered on the motherboard pridudes a normal sounding chime but it's a few seconds longer then it should be. Someone suggested something with the processor circuit not function properly because thr chime is longer then normal.

I also noticed that when I press the developers switch the horizontal line shrinks to the size of the error code that is supposed to show up when you press that button without a os loaded. So I have no clue what's burned up.

I have plenty of dead board so I can try swapping anything that could possibly be it.

It would probably be a chip that control video but I have no clue what one that would be.

Thanks to everyone that has any idea what the issue could possibly be it. I appreciate it!