Any alkaline corrosion on the MPU?
Is this a new problem or did the game come to you like this?

This is a tough problem to debug.
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The new place for pinball repair info

Look here,Same system same problem..Follow the steps,Still no update but it could help

https://pinside.com/pinball/forum/topic/sega-jurassic-park-whitestar-board-problem#post-4320704

I agree on that one Chris...A real pain sometimes to track down

I had a nascar that was doing something similar I believe. When you turned it on it just flashed the controlled lamps on and off. If you hit the reset button on the cpu board the game would start up. I researched it and found it had to do with the navram chip the previous owner installed. I replaced it with an original chip and just put a battery pack back on and the game is working fine again.

You are going to need to send the MPU and driver boards to a pro.
The WhiteStar board set is a great board set, but debugging this kind of problem requires tools and time on a test bench.
LMK if I can help with the repair.
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

Here’s is the chip I put in and the game boots up fine now.

E25970DC-F360-45C5-B139-D1F770B6F123 (resized).jpeg

So you replaced the RAM chip and now it works. Good.
One could conclude that the RAM chip was at fault.
But, the fault could also have been with the socket or the mating to the socket.
To really indict the RAM, you'd need to put the old RAM in again to see if the problem reappears.
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Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

Ohhh that would be a good idea.... but I already threw it out
Before I replaced it I did go through each chip and ensure they were seated properly