Indiana Jones POA solenoid

(Topic ID: 219145)

Indiana Jones POA solenoid

By chaos19

4 months ago

Topic Stats

  • 2 posts
  • 2 Pinsiders participating
  • Latest reply 4 months ago by zaza
  • No one calls this topic a favorite


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#1 4 months ago

I have a problem with Indiana Jones mini-playfield motor that wont turn right (solenoid 23). Ever other solenoid/flasher/ switch in the game works. I took the motor from the gearbox and it runs fine with left turn enabled in test mode. I change the left with the right turn wires at jumper 1 on the bridge driver pcb. Now when I activate left turn in test the motor turns right and doesn't turn left when I activate right (solenoid 23). Now I know its not the bridge driver pcb. I test the continuity from the bridge driver jumper to J126-6 & 7 and they check out fine. I tested all the transistors (tip 102 & 2n5401) from Q34 -Q27 (covering solenoids 24-21) and they all checked the same - good. I read in very rare occasions it could be the IC in the circuit before the transistors - U3, so I took out the data cable , J126 & J118 and tested the IC in circuit using a diode test. All the solenoid in pins measured about 1.05 and all the outs were about 0.8 . If pins 8 & 9 (solenoid 23 in & out) measured different I'ld assume it would explain the IC was stuffed, but since it was the same as the others would I be right in assuming its OK. I'ld much appreciate if anyone could possibly explain what my problem could be (I've spent so many days on this, I'm just a amateur).I

#2 4 months ago

Be sure that "mini playfield limit" optos are working. When the program sees a left or right opto closed, it won't rotate into that direction.

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