(Topic ID: 214384)

Tales From the Crypt left slingshot won't fire

By swirvin

5 years ago



Topic Stats

  • 8 posts
  • 3 Pinsiders participating
  • Latest reply 5 years ago by swirvin
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#1 5 years ago

The left slingshot on my TFTC will not fire in game play or test.The coil is good and will fire when the collector is grounded.Replaced the tip 122,the 2n4401,the 7402 or gate,the 7404 hex buffer, and the pia 6821. The switch does score points.I have no idea where to go from here

#3 5 years ago

Thanks I rechecked transistors coils fuses and diode all are fine.

#8 5 years ago

I have checked the switch and that is not an issue.
I grounded the tip 122 not pre-drive trans and have not yet probed logic. The pia is socketed and I have replaced with a new pia.I did notice the resistor array and thought it should be checked I have seen them go bad on some other pins like the display circuit on Williams Fire.I will get back to working on the pin on Tuesday and will report back then.

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