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(Topic ID: 272118)

Indiana Jones WMS flipper reset issue


By TZ

5 months ago



Topic Stats

  • 19 posts
  • 7 Pinsiders participating
  • Latest reply 5 months ago by slochar
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#1 5 months ago

I have an Indiana Jones that recently started having a reset issue when both flippers are pressed. I first started with all of the typical reset fixes, even going to the extent of swapping out the MPU board from another working game. I've come to believe the issue resides within the flipper circuits.

When I check the end of stroke switches for continuity with the game off, I get an open circuit for each side. This seems correct. And when you close the switch I get continuity, which also seems correct. However when I do this with the game on, and in the attract mode, I get the same thing for the left side, but I get a closed circuit on the right side (without closing the switch). I would expect both side to behave the same, but I'm not sure which side is normal and which side is acting up. It appears each leg of EOS switch on the right side is grounded with the game on, while only one side of the EOS switch is grounded on the left side.

Any thoughts which is correct? And if this could be contributing to my reset issue?
(During game play the flippers operate fine until the reset of course)

#4 5 months ago

Any chance the bridge on the fliptronics board could be a problem?

#6 5 months ago

I will double check the checklist as you suggested. However I have already replaced the MPU with a working unit from another game.
Thanks for the feedback.

#8 5 months ago

Sorry, yes the driver board was replaced. I will checkout the other items.

#12 5 months ago

The flippers work as they should in the test mode.

#14 5 months ago
Quoted from Bakerman:

Do the EOS switches work correctly in switch test?

Quoted from Bakerman:

Do the EOS switches work correctly in switch test?

Yes, they do.

#17 5 months ago

UPDATE:
So I think I have made some progress following the steps in the Pinwiki for WPC resets (as suggested by LTG).
Only played a handful of games so far but....

A) Replaced J101 connector and pins to try and increase voltage at TP2. Removed the IDC connector and went to the trifuricon pins (very difficult with the double wires). Unfortunately this had no affect, voltage remained at 5.00VDC

B) Only replaced pins at J114 connector. I would like to replace that IDC connector too, but think it would best to replace the Z connector at the same time and will do that when I have time. Just replacing the pins on the board helped with the voltage drop between the driver board and the MPU board. I was seeing 4.90VDC on the MPU (at pin 32), now I'm seeing 4.98VDC.

Thanks for all of your suggestions!

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