tisdag 31 december 2013

Two new projects

A couple of days after Christmas I got two new projects in to the workshop. A Williams Flash and a Bally The Shadow. They are both working but in need of service.

 
I started with The Shadow and it has several issues.
Left flipper does sometime not drop back when releasing the flipper button.
Right flipper sometimes fold back when catching a high velocity ball.
The sanctum magnet does not catch the ball.
Upper right diverter does sometime not flip over when pressing the button.
Some switches seem not to work, there are several switches to check in the error report.

 
The left picture is the left flipper assembly and it have probably had problems before, check the way the return spring have been tensioned by winding it round the tab of the flipper base. The right picture is the right flipper assembly and it is currently locked against the EOS switch, just a light tap at the switch release the crank. Here you also can see the reason why the flipper folds back when catching a ball, one cable of the EOS switch is loose. I'll order a flipper rebuild kit to sort out the flipper issues.   
 
The sanctum magnet works as it should in test mode but the problem seems instead to be related to the brick wall drop target located behind the magnet. There is a spring in the lower right corner that should retract the target when released by the solenoid, but the spring is broken. Also the pivot arm that raises the drop target are very sluggish and does not allow the target to go all the way down and close the switch. it feels like the plunger does not move free in the coil sleeve. I have to take this assembly out of the game and inspect it to find out the cause of the problem. I do also need a new spring to get it to work properly.
 
 
The left picture is the left ramp diverter, which works properly. I just added the picture it to show that there has been quite a lot of fiddling with the springs in this machine. The right picture is the right diverter which sometimes faile to switch over. As you can see we have a spring issue also here, it has been mounted upside down causing the spring to slide against the armature. This might be the cause of the diverter not moving, but I'm not sure. I'll order a couple of new springs for these two assemblies and make sure they are properly installed and see if it solves the problem.