The magnet is adjustable via how you describe above. It sounds like you have another problem that is causing intermittent trouble with the magnet lock. I am thinking either dirty optos in the ball trough or a problem with the battlefield stand up target. My Shadow had the diode reversed on the battlefield stand up target. I remember reading how someone else had the same issue.

Just my 2 cents,

Tom

White to Unbanded Diode End
Green to Banded Diode End

This should be the same for (I'm pretty sure) all switches

Here is a picture

http://tomspinballpictures.shutterfly.com/370

IMG_0889.JPG

Make sure that the wires are not making contact with the metal tab that holds them. The wires should be going to the switch lugs and not making any other contact.

You also need to pay special attention to the silver band on the diode. If that is backwards, then that will also cause your ground short.

Make sure that when you were switching wires, you did not bump the diode on the adjacent Wall Target, flattening it into the lugs of the switch. The switch you are working on is #55. #51 is the Wall Target (Brick Wall, red target) and it is on Row #1. So...disconnecting the switch on row 5 would not do anything on a row 1 short.

For clarity, Switch Number 55 is the yellow drop target that leads to the battlefield VUK (center picture above). Switch number 51 is the Red Brick Wall drop target (row 1 switch, bottom to the right in picture).

If you have not done so already, you should probably download the manual (if you don't have one).

http://www.ipdb.org/machine.cgi?id=2528

About midway down the page.

When you look at the switch matrix chart, it is divided into rows and columns. Rows are side to side and columns are up & down. If you have a row out, the you likely have a short somewhere on that row. Given Row 1 is: Gun Trigger, Slam Tilt, Left Ramp Enter (opto), Trough 1 (opto), Wall Target Down (immediately adjacent to switch 55), Left Slingshot, Mini Left Standup #1, Mini Right Standup #4. Since Row 1 is shorting, and there are no other nearby switches on Row 1 other than the Wall Target Down, I would look at the Wall Target Down for metal to metal contact. I suspect you flatten the diode into the center lug or metal tab that is holding it down.

The Switch Matrix is plugged into the CPU at J207 & J209. The dedicated column switches are J205 (cabinet & test button switches). Unplug J207 & J209 and see if the short goes away. If it does not go away, then the short is on the CPU, if it does, the short is on the playfield.

I would recommend posting a "Tech" post in the Technical Help Section of this forum. You are currently in the general discussion area.

Tom