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Thursday 17 May 2018 at 07:39
In the close-up picture of the connector on backside of the board I see several bad solder joints. Since the board works in your other game they are unlikely to be the issue but they sure aren't helping. All of those header pins should be re-soldered at minimum. If the rest of your boardset hasn'...
Source: http://pinside.com/pinball/forum/topic/time-warp-no-sound#post-4402486