resistor network is just a bunch of resistors in one package. You can make your own network with 8 or 9 of the same value resistor.

What Chris said.

Typically with special solenoid problems on system 11 and Data East games 90% of the time it's the TIP 102 and the 7402 chip that is bad. Since there are really only 3 chips involved, two 7402's and a 7407, I usually remove and socket all 3 of these TTL chips. (I rarely if ever have to replace the 3 PIA's for special solenoids) Saves time since I already have the board out and these circuits like to go bad quite often so it becomes an easier fix next time another special solenoid circuit pops.

Also this circuit can have you chasing your tail. If you replace the transistors but not the bad chip it doesn't take the game being on very long to reblow the transistors, also a fair amount of the time the diode is blown on the coil (or someone replaced it backwards and that is what blew it out) and the bad or backwards diode will immediately reblow the transistor and possibly the chips.

Also weirdly enough IIRC the blanking circuit uses some of the gates from one of these chips and damage from a bad transistor can lead to odd blanking problems, like the coils all firing when the game is turned on or display chips blowing up, so it's not a bad idea to put fresh ones in when they are suspect.