Fischer

1 Introduction

Fischer, the large pool table manufacturer, decided to get into the home model pinball market in 1977.

Fischer, A division of Questor Corporation, P.O. Box 50, California, Missouri 65018.

2 Games

• Skyhawk, model number 3019. Made in November 1977.

3 Technical Info

There are two circuit boards in this machine. Board 710A is located in the backbox and handles game logic, score display, and sounds. The manual calls this board the "Upper Printed Circuit Board". Board 710B is located on the underside of the playfield and handles the switches and solenoids as well as provides the 7 volt and 28 volt dc power supply. The manual calls this board the "Lower Printed Circuit Board".

There are two manuals printed. One is an "Assembly" manual which was supplied with the machine. Sold seperately was a "Service" manual (# 11-77-600) which included a schematic of the playfield and had some parts lists. There were no board or power supply schematics with this manual. Fischer distributors were supposed to do board repairs and only they got the board schematics.

4 Problems and Solutions

4.2 Solenoid Problems

All coils operate on 28 volts DC. The solenoid driver transistors are located on the "Lower PC Board" attached to the underside of the playfield. Transistors Q8 (type SE9300 or TIP102) is the driver for the slingshot kickers. Transistor Q6 is it's pre-driver (type TIS98). Both of these are driven from IC 5 and IC 2. Transistor Q7 (type SE9300 or TIP102) is the driver for the eject hole. Transistor Q5 is it's pre-driver (type TIS98). Both are driven from IC 1. The TIS98 transistor can be replaced with a 2N4401 and observe lead pinout.

4.10 Eject Hole Problems

The eject hole coil (28 volts DC) can be replaced with a Gottlieb A-5194 and be sure to observe which machine wire goes to the banded side of the diode.