söndag 9 februari 2014

The shadow revisited

The Shadow was picked up a couple of weeks ago, it was needed for a competition. But there was still some problems with it and I didn’t have the parts home and today I was on site and made the last repairs. One bolt in the coin door frame was missing. The right flipper had some hang time when releasing the button and the cause was the opto interrupter. It had lost a bit of the tension in the interrupter arm and didn’t follow the button properly when released. The last issue was the lock magnet which sometimes didn’t throw up the ball, even though the brick wall was down. An adjustment of the brick wall switch fixed that. But I’m not sure if the switch needs to be changed or if it is the drop target causing the problem. The target is slightly bent and doesn’t run properly beside the switch, there is picture of it in an earlier post where you can see that the E-clip of the center pin is missing. When the E-clip is there the target does not slide as it should due to the bend. I’ll let the game run for a while to see if the problem reappears.

While on site I repaired a World cup with a flipper problem. Right flipper didn’t stay raised when the button was pressed. The cause was a loose cable at the flipper coil, an easy fix. This game needs a good clean up and new rubbers, but that have to wait for another time.

I also had a first look at a Dirty Harry with a few problems. One was the same problem as The shadow had with the flipper, a little too long hang time when the button was released. This makes it very difficult to make a post pass but was easily fixed with a new opto interrupter. One of the flippers was also aligned a bit too high, also an easy fix. But it does also have a few more complicated issues. There is a lock magnet in the top right loop and it protrudes a bit too much through the playfield causing the ball to stop against it on the way down. It should be adjustable but it has been so beaten by the balls that the top of it does not pass through the hole anymore and it can’t be lowered to playfield level. I have to take out the ramps above to access it and see what I can do about it from the upside. There is also a problem with the wires going up in to the gun, just touching it causes the switch test to indicate open or closed switch. I do also think there is a problem with the optos in the ball through. When using the Empty balls function in the test menu it just ejects one or two balls most of the time. On top of this it does also have a reboot problem. A couple of challenges, I do really look forward to work at this one.

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