Update
Updating database... Please wait.
Thursday 8 February 2018 at 17:09
Thank you again @barakandl, I'll need to get a logic probe. I'll report back in a few days. The prodject boards jumpers have been set to match the fathoms existing working board. A local friend has a working medusa and I have compared the boards and can confirm both fathom & medusa do not use U1...
Source: http://pinside.com/pinball/forum/topic/squawk-talk-trouble-shooting#post-4219075