Here’s what I’ve done so far
- I totally forgot I had a TPG (Test Pattern Generator) and connected that. When a tpg is connected to the monitor, sending a 15khz signal works – so this means the monitor works
- When I wire up a jamma edge to the psu, and take out the Namco emi filter pcb, I can get an rgb image (monitor needs some major calibration)
- When I connect point blank 1 on the filter board, I don’t get a proper image
- When I connect point blank 2 on the filter board, I get the image like in the original video
- If I connect both those pcbs outside of the filter board, I get perfect image on my astro city I’ve swapped 2 different filter boards with the same results.
- I’ve replaced the rgb connector with newly crimped wires and it has the same results.
- I’ve tried outputting the RGB signal to an Astro City and to my Atomiswave, but sadly I couldn’t get a perfect image
- If my monitor wasn’t grounded properly, I wouldn’t think I’d get an image with a JAMMA edge or a TPG right?
- My issue seems to stem from the game pcb outputting rgb to a source using the filter board, but I’ve tried using another board and I find it hard to believe 2 have issues. What I really don’t understand is how and why it changed the moment I used a different monitor – of which is exactly the same tube number, chassis, frame and connector.
My next test is to bother DRAGONKZ and connect both my Point Blank 1 and Point Blank 2’s with their respective EMI Filter Boards and see if it also exhibits the same issue to completely rule out the EMI Filter boards being the issue.
This issue has been the biggest pain in the arse in all my years of fixing crap up and I must say, I’m completely stumped!
