Golden Tee Video Issues

[q6gt]

Anyone know how to troubleshoot Golden Tee Fore video issues? After a crash, the video out of the jamma harness is pretty bad. Noisy, whites and grays are all same color. Video directly out of the 3DFX  video card looks great. What is downstream from the card where the cable plugs back into the board and out the jamma connector?

The picture out of the 3DFX into a pc monitor says it's 26 kHz... is that EGA? When I plug a VGA cable into an HDMI converter from the 3DFX it doesn't convert the signal. When I plug the CGA from the jamma harness into the HDMI converter, I see a good image initially but it drifts away into a washed out image. If I press the auto adjust on the converter, the image recovers for a minute or so and drifts out.

Game looks and plays fine out of the 3DFX card into a PC monitor. I don't have a working multisync CRT.

CGA https://photos.app.goo.gl/VWQhh9WUe7Xd49ix9
Video Card https://photos.app.goo.gl/zf8ZM24FwsFRcDD28