Insentricity

Captain Fantastic (home version)

I ordered the test procedures from Marco. I got a cheaply assembled photocopy manual. The schematics in it are incomplete and have been copied so many times that they are close to impossible to read.

First thing I did was check out the power board. Opening it up I found a board that looks very similar to a Midway 8080 style power board. I found the input voltages were fine, but the 5V and 18V out were very low. After checking voltages around the board I found that nothing was getting across the 100ohm resistor. Replaced the resistor and the board is working.

Put everything back together and fired it up and got nothing from the MPU. A quick check of the new resistor showed it getting good and toasty. Looks like there is a short on the MPU somewhere. Not sure where yet.

Allied Leisure "Circa 1933" part II

Replaced the transistor and that didn't quite fix the slingshot. The 7404 upstream from it had gone bad too. Popped out the 7404 and put in a new socketed one and the slingshot is working fine now.

Allied Leisure "Circa 1933"

When it came in it had 3 problems: weak right flipper, left flipper sticks in the up position, and the right slingshot wouldn't work.

Popped it open and found that the weak flipper was caused by someone hooking up the EOS switch across the thick wire part of the coil. They also did it to the left one. Swapped the EOS to the thin wire and that fixed it.

The coil stop on the left flipper broke off and had been reattached with a screw. The screw gets magnetized when the coil is energized and has just enough residual magnetism to keep the plunger stuck to it. The head of the screw also became smashed and I wasn't able to fit a screwdriver into the head anymore. Had to grab it with pliers. Replaced it with a brass screw.

It appears the right slingshot doesn't fire because of a bad MPS6531 on the MPU board. I have one on order and expect it to fix the problem.