Gottlieb Grand Slam (Gottlieb, 1972) scoring and runs problem

[ftmancuso]

i need help with scoring and run problems. thank you

 

[pinballdaveh]

Along with posting the problems you should try to copy and post the schematic if you have it.

 

[ftmancuso]

Hi pinballdaveh! The hit unit only works if i keep the runout switch closed. I checked all switches but I must be missing something.

 

[pinballdaveh]

Maybe coil smoke will chime in. I think he has this machine. Baseball pins are some of the hardest machines to work on. Without the schematic and maybe a video of the problem, makes repair very difficult.

 

[ftmancuso]

Hi! I was able to fix my hit unit. My other problem hitting the single should score 100pts. I get 300 to 200 points every time. Any idea what the problem could be?

 

[pinballdaveh]

No I can’t tell what’s the problem without the schematic. Like I said baseball pins are complex.