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I have two Total Carnage PCBs that come up with a "bad u99" error; one continues to boot up to garbled graphics but plays the attract mode, the other you hear the bootup "bong" repeatedly.
  • I have swapped out working U99's, no change
  • I have swapped out working U115s, no change
  • I have replaced the U115 single wipe sockets with double wipe, no change
Anything else I can try?
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