Have you contacted rottendog ? One of my rottendogs was burned up by my voltage regulator and I sent it in and they repaired it no charge. I don't know how their customer service is now but I was impressed when they did that for me because it wasn't the fault of the rottendog board. They also helped me troubleshoot a couple over the phone before too.

Try jumpering pin 3 to pin 4 on U210.

That will be the top two pins on the left side of U210 as it sits in the game...

x x
4 3 2 1
-------x
5 6 7 8

--
Rob Anthony
Pinball Classics
http://LockWhenLit.com
Quality Board Work - In Home Service
borygard at gmail dot com

I feel like I read this exact same issue in another thread a week or so ago. Definitely check with the manufacturer was a heavy suggestion there.

Here you go

https://pinside.com/pinball/forum/topic/rottendog-whitestar-driver-issue

Check my link. U210 is the correct ic to put the jumper on.

Sorry. Updated my post to reflect correct IC designation.

--
Rob Anthony
Pinball Classics
http://LockWhenLit.com
Quality Board Work - In Home Service
borygard at gmail dot com

Yes!

I'm glad there is a jumper solution but for the uneducated what exactly is going on that a jumper is needed?
-Mike

See here:
http://www.sternpinball.com/upload/downloads/sb112.pdf

Pin 3 is the tolerance selection for the CPU monitor (U210).
It must be tied to either +5V (reset's CPU if voltage drops below 4.5V) or ground (reset's CPU if voltage drops below 4.75V). It should never be left floating... which is what this board does.
The Sega PDF linked to by stangbat covers this pin 3 a bit. They had the tolerance set too high (grounded) which caused too many resets. So they instruct the user to clip that ground which forces the pin to float (neither grounded nor pulled to +5V). An IC signal *usually* floats high when unconnected but this cannot be guaranteed. What the Sega PDF should have then done to make the fix proper is add a jumper wire from pin 8 to pin 3.

Note that the jumper shown in photo above ties pin 3 to ground. This forces the CPU to reset if the voltage drops below 4.75V. If the CPU continues to reset occasionally with this fix then the jumper wire should be removed and tied between pin 3 and 8 instead (pin 8 is the signal with the thicker trace on bottom of board). This would force the CPU to reset if the voltage drops below 4.5V.

stangbat , G-P-E
Thank you for the education.
-Mike