(Topic ID: 144415)

System 11 F14 Power Supply / Coil Power Questions


By kilmarnock1350

3 years ago



Topic Stats

  • 5 posts
  • 2 Pinsiders participating
  • Latest reply 3 years ago by kilmarnock1350
  • Topic is favorited by 2 Pinsiders

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#2 3 years ago

Check power supplies in the backbox first:
For solenoid power to coils check PS 3J3 pins 6,7,8 for +32 to +35 VDC. You can grab ground at the board mounting screw conductive pads.
For flipper power check 15J3 (flipper power supply board) pins 1,2,5,6 for +65 to +75 VDC nominal. Flipper ground is 15J2 pins 7,8,9

#4 3 years ago

Well, a voltage drop of some degree is probably normal. What you are might be experiencing is a lack of current. A hard failure is a bit easier to diagnose than a slightly sagging supply. What you do know is overall all solenoids from the supply seem weak. The supply for the solenoids originates from an off board bridge and travels to the PS board for a fuse and a couple of smoothing caps before splitting off to go to all the solenoids from 3J3. You might try replacing those caps C5 and C6. First also make certain that the fuse and holder F2 is perfect, and the incoming supply 3J1 connector is perfect.

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