From Newsgroup: rec.games.pinball

I am trying to repair a Firepower PB machine using http://www.firepowerpinball.com/downloads/DriverBoard.pdf I have discovered that my 2,5 amp fuse does not blow by unplugging 2J12. I have checked the solenoids I believe are associated with it and they all have about 4 ohms. Could you tell me why on the diagram it says solenoid 22/special solenoid 6 left kicker Q12/22? Are there 2 different solenoids and two different transistors to check? I have found solenoid 22 by the playfield diagram but not sure where special solenoid 6 is. When the plug is not attached to the driver board the fuse does not blow but after re-attaching it the fuse blows as soon as power is applied again. Trying to figure out what I am missing with the 2 solenoid numbers on each line plus the 2 transistor numbers
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From Newsgroup: rec.games.pinball

On Friday, July 3, 2020 at 2:20:51 PM UTC-4, Tim Otis wrote:

I am trying to repair a Firepower PB machine using http://www.firepowerpinball.com/downloads/DriverBoard.pdf I have discovered that my 2,5 amp fuse does not blow by unplugging 2J12. I have checked the solenoids I believe are associated with it and they all have about 4 ohms. Could you tell me why on the diagram it says solenoid 22/special solenoid 6 left kicker Q12/22? Are there 2 different solenoids and two different transistors to check? I have found solenoid 22 by the playfield diagram but not sure where special solenoid 6 is. When the plug is not attached to the driver board the fuse does not blow but after re-attaching it the fuse blows as soon as power is applied again. Trying to figure out what I am missing with the 2 solenoid numbers on each line plus the 2 transistor numbers

Solenoid 22 _is_ special solenoid 6 (left kicker).. the switch may be stuck on or the diode on the solenoid shorted, or the coil (double check the left kicker).
https://books.google.com/books?id=SjpDdjhWr1UC&pg=PA55&lpg=PA55&dq=williams+special+solenoids&source=bl&ots=mAfSwaPdro&sig=ACfU3U1wdQDvtqsy4kvuW27EQl9CixRpMg&hl=en&sa=X&ved=2ahUKEwjpprHd6bHqAhVDknIEHbbNDmgQ6AEwB3oECAwQAQ#v=onepage&q=williams%20special%20solenoids&f=false
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From Newsgroup: rec.games.pinball

On Friday, July 3, 2020 at 3:40:21 PM UTC-4, Tim Iskander wrote:

On Friday, July 3, 2020 at 2:20:51 PM UTC-4, Tim Otis wrote:

I am trying to repair a Firepower PB machine using http://www.firepowerpinball.com/downloads/DriverBoard.pdf I have discovered that my 2,5 amp fuse does not blow by unplugging 2J12. I have checked the solenoids I believe are associated with it and they all have about 4 ohms. Could you tell me why on the diagram it says solenoid 22/special solenoid 6 left kicker Q12/22? Are there 2 different solenoids and two different transistors to check? I have found solenoid 22 by the playfield diagram but not sure where special solenoid 6 is. When the plug is not attached to the driver board the fuse does not blow but after re-attaching it the fuse blows as soon as power is applied again. Trying to figure out what I am missing with the 2 solenoid numbers on each line plus the 2 transistor numbers

Solenoid 22 _is_ special solenoid 6 (left kicker).. the switch may be stuck on or the diode on the solenoid shorted, or the coil (double check the left kicker).

https://books.google.com/books?id=SjpDdjhWr1UC&pg=PA55&lpg=PA55&dq=williams+special+solenoids&source=bl&ots=mAfSwaPdro&sig=ACfU3U1wdQDvtqsy4kvuW27EQl9CixRpMg&hl=en&sa=X&ved=2ahUKEwjpprHd6bHqAhVDknIEHbbNDmgQ6AEwB3oECAwQAQ#v=onepage&q=williams%20special%20solenoids&f=false

Thank you I will check. There are 6 special solenoids to check. I was a little confused with 22 being the same solenoid as 6. I have more fuses on the way and should arrive soon. I have an electrical background with a "minor" in electronics :) I am more than a novice but far from an expert. I enjoy the challenge of troubleshooting though. covid is providing more troubleshooting time!
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From Newsgroup: rec.games.pinball

On Sunday, July 5, 2020 at 4:48:25 PM UTC-4, Tim Otis wrote:

On Friday, July 3, 2020 at 3:40:21 PM UTC-4, Tim Iskander wrote:

On Friday, July 3, 2020 at 2:20:51 PM UTC-4, Tim Otis wrote:

I am trying to repair a Firepower PB machine using http://www.firepowerpinball.com/downloads/DriverBoard.pdf I have discovered that my 2,5 amp fuse does not blow by unplugging 2J12. I have checked the solenoids I believe are associated with it and they all have about 4 ohms. Could you tell me why on the diagram it says solenoid 22/special solenoid 6 left kicker Q12/22? Are there 2 different solenoids and two different transistors to check? I have found solenoid 22 by the playfield diagram but not sure where special solenoid 6 is. When the plug is not attached to the driver board the fuse does not blow but after re-attaching it the fuse blows as soon as power is applied again. Trying to figure out what I am missing with the 2 solenoid numbers on each line plus the 2 transistor numbers

Solenoid 22 _is_ special solenoid 6 (left kicker).. the switch may be stuck on or the diode on the solenoid shorted, or the coil (double check the left kicker).

https://books.google.com/books?id=SjpDdjhWr1UC&pg=PA55&lpg=PA55&dq=williams+special+solenoids&source=bl&ots=mAfSwaPdro&sig=ACfU3U1wdQDvtqsy4kvuW27EQl9CixRpMg&hl=en&sa=X&ved=2ahUKEwjpprHd6bHqAhVDknIEHbbNDmgQ6AEwB3oECAwQAQ#v=onepage&q=williams%20special%20solenoids&f=false

Thank you I will check. There are 6 special solenoids to check. I was a little confused with 22 being the same solenoid as 6. I have more fuses on the way and should arrive soon. I have an electrical background with a "minor" in electronics :) I am more than a novice but far from an expert. I enjoy the challenge of troubleshooting though. covid is providing more troubleshooting time!

I have pulled one wire off the left kicker solenoid plus one side of the diode. The solenoid is shorted but the diode seems ok. I am still blowing fuse 2 with one side of the coil disconnected. Would a stuck switch still trip the fuse or should I check the other solenoids. I checked the right kicker it seems ok but I am leaving one side of the wires off to move onto another solenoid until I can stop the fuse from blowing. Does that make sense?
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From Newsgroup: rec.games.pinball

On Friday, July 3, 2020 at 1:20:51 PM UTC-5, Tim Otis wrote:

I am trying to repair a Firepower PB machine using http://www.firepowerpinball.com/downloads/DriverBoard.pdf I have discovered that my 2,5 amp fuse does not blow by unplugging 2J12. I have checked the solenoids I believe are associated with it and they all have about 4 ohms. Could you tell me why on the diagram it says solenoid 22/special solenoid 6 left kicker Q12/22? Are there 2 different solenoids and two different transistors to check? I have found solenoid 22 by the playfield diagram but not sure where special solenoid 6 is. When the plug is not attached to the driver board the fuse does not blow but after re-attaching it the fuse blows as soon as power is applied again. Trying to figure out what I am missing with the 2 solenoid numbers on each line plus the 2 transistor numbers

1. Check the resistance on all coils. Should be more than 2.5 ohms. If less then the coil is shorted, driving transistor is bad, or the diode is bad
2. Do a quick test of the driving transistors for all coils to make sure one of them is not shorted. They are all together and can be tested quickly.
3. Check the special solenoid switches to makes sure that one is not stuck closed.
4. You can keep removing coils from the power daisy chain until you find the coil that is causing the fuse to blow. Once found, you will need to figure out why it is causing this. It may not be the solenoid but could be the diode, transistor, or a short somewhere.
5. Don't forget to check the knocker and flippers
Johnie
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