Arcade Collecting > Pinball

Playmatic Chance MPU Problem

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DarkSide:
Well i wanted to work on the machine today but im all out of 4042's, typical.

Hope changing those will fix that switch matrix problem.

DarkSide:
Still not fixed, but game plays, it can just happen random that the machine thinks ball is lost and tries to shot a new one, even in the middle of a game.

It still seems to happen most often when the slingshots are used.

DarkSide:
With the prices from here i would guess close to 6-700 USD.

The game is in Denmark, i just cant provoke the fault to show it self messing with the wires, connectors, playfield, only if i touch the score switch for the slingshots.

But as i said it does not happen all the time.

If i disconnect the score switches for the slingshots everything is working, well except its not scoring points when hitting the slingshots, so bad connection i really doubt it.

DarkSide:
The slingshots are independent, and it does happen with both of them, or im not sure if thats the right way to write it.

It happens when touching the score switches under the slingshots, also without activating the slingshot itself, but it only happens at random.

I can play without problems, but if the ball activates the slingshot score switches to many times in a short period of time the machine thinks ball was lost, lets shot a new one.

Edit:

It does the same with all the switches in that part of the matrix, but they do show the right number in the test program, any ideas ?

DarkSide:

--- Quote from: pinballjim on September 21, 2011, 09:26:30 am ---Same idea I had before... replace the components associated with that part of the matrix.



--- End quote ---

Did that already, but same fault.

Can i ask you to take a look at the schematic, and tell me what you would change ?

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