Help with Golden Tee 2k

[Arcade-Projects]

Hi, I’m new to owning an arcade machine. I just got a Golden Tee 2k. I have been reading quite a bit, and will continue to, but thought I’d post here for some guidance.
When I power it up, the monitor turns on but only displays a black and white pattern. There is no sound at all from the speakers. The board has yellow light flashing and green light has a quick flash every 3 seconds. Every time the green light flashes, there is a slight hiccup in the buzzy sound coming from the back of the monitor.

First thing I plan on doing is check power supply, once I get my voltmeter back tomorrow. Any other thoughts? I’ll attach a pic of the monitor
Thanks for any help,
John

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