Did you replace any of the electrolytic capacitors on the power supply?
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Quoted from YeOldPinPlayer:One way to fix it is install one of the Kahr daughterboards. http://www.kahr.us/daughterboard.html
A review of the board/creator: https://creditdotpinball.com/2014/04/26/tech-wpc-resets-and-the-wpc-mpu-daughterboard/
Uh no... as OP states this is a High Speed..system 11 game.
Quoted from PinballManiac40:Did you replace any of the electrolytic capacitors on the power supply?
The 2 smaller original caps for 5volts tend to leak and damage the board underneath them.
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