After some switch wiring was swapped around, the game reports to check fuses F114 and F115 and then a ground short on switch row 1, though no fuses are blown and the error stays with the switch plugs removed.

'Check F114 and F115' then ground short row 1: failed 12 V regulator on CPU

Cause: The 12 V regulator (Q2) on the CPU board, which powers the switch matrix, had failed: about 15 V went in but only around 1.5 V came out.

Checks

• Measure the 12 V on the CPU board.
• If it is low, measure the input to the regulator (about 15 V at D2) and its output.
• Look at capacitor C2 next to it for leakage and trace damage.

Fix

• Replace regulator Q2 on the CPU board (a drop-in switching replacement was used here), and replace C2 at the same time.

Systems

• WPC Fliptronics

Games

• The Addams Family

Related tips

• "U6 Checksum Error"
• Bench-check the WPC CPU switch matrix circuit
• Outhole, shooter diverter and gumball motor all dead: CPU board chip at U4
• What is on the WPC CPU board
• Which System 11 CPU boards fit which games
• The CPU must be a 68B09E
• What fails on a WPC CPU board
• Dead CPU: isolate it from the other boards

Source: Pinball Repair help group!! (Facebook group)