Good job on the repair!! 
Quoted from BroMike:is there anything that references which transistors correspond to which switches?
On a system 11 game there are three types of switches. One group of switches goes thru a matrix and the to the cpu. These switches are not tied to any transistor order. The second group of switches bypasses the matrix and goes straight to the cpu, these are the interlock and 2 of 3 switches on the coin door. If the switch matrix craps out you can still get to testing mode with the door switches. The last group of switches are for the 6 special solenoids, these switches don't go thru the cpu but go directly to the the transistor to make it fire. Williams thought it would make for faster action on the playfield not having the cpu slow down the signals. These six special solenoid switches are labeled in the schematics as to which transistor they control. On page 52 look at the six pair of transistors on the right side of the page, for example take Q78, Q79 the ones you just changed, the emitters of all the transistors are tied to ground. The collector of Q79 goes to the right and is labeled 1J19-9 STS6T with a line over it. The 1 stands for CPU board, J stands for jack 19 and -9 is for pin 9 of the connector. Right above this is the switch input and it is labeled 1J18-9 SS6T with line over it. The line over the label means it low activated. So when you push on the skirt of the pop bumper and it closes the switch SS6T the signal on this wire will go low. The output of Q79 will then go low activating the coil STS6T. There is more info on page 2 about this also. The coils are numbered on the left, then labeled and the coil control wire color. So #22, Lower jet bumper, Special #6, Blue wire with a black stripe, goes to the cpu board at P19-9, goes thru a molex connector 8P3 pin 22, Q79 transistor turns it on and lastly the correct coil type is an AE-23-800-03
Oviedo, FL
Moe
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