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(Topic ID: 276280)

TAF coil problem


By abrnpilot

51 days ago



Topic Stats

  • 12 posts
  • 5 Pinsiders participating
  • Latest reply 42 days ago by DumbAss
  • No one calls this topic a favorite

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fliptronic_transistors.jpg

#1 51 days ago

I replaced the upper left flipper on my TAF with an entire new assembly and I wired the coil just like the coil I took off. When I pressed the left flipper button I blew a bunch of fuses and who knows what else. When I looked closely at the assembly that I took off I realized that someone had wired the coil backwards in the bracket (wire terminals where the plunger hits). The assembly I put on has the coil facing the proper direction, so in essence, I wired the new coil backwards. Now I have no power to any of my coils. Has anyone ever experienced this?

#2 51 days ago

Sadly, yes. You aren't alone. You may have blown a fuse or two on the fliptronics board. And you may have also lost a transistor or two, the diodes on the coil, and possibly the coil.

Sorry.

LTG : )

#3 51 days ago

Where do I look on the board for the transistor and how do I test if I fried it. The diodes on the coil look fine but I will replace as a precaution.

#4 51 days ago
Quoted from abrnpilot:

Where do I look on the board for the transistor

Manual helps. Or turn the game on. Go to Tests - Coils stop on upper left flipper and hit the start button. Then keep hitting the + diagnostic button which each hit steps you though coil, fuse, connector, transistor information.

Quoted from abrnpilot:

The diodes on the coil look fine but I will replace as a precaution.

You can't always tell by looking, replacing is a good idea.

Quoted from abrnpilot:

how do I test if I fried it

Youtube has lots of short videos to help with this.

LTG : )

#5 51 days ago

I can see two that are obviously toast at q7 and q11. Thanks. I think I can fix it from here.

#6 51 days ago

Orientation of the coil is not what you want to look at when wiring a coil. Pay attention to where the wires are in relation to the banded side of the diodes.

#7 50 days ago

I was in a hurry and now I will learn the hard way. But it will be invaluable knowledge.

#8 50 days ago
Quoted from abrnpilot:

But it will be invaluable knowledge.

I am glad you see that. There isn't a school where you can learn pinball repair.

You just paid some tuition.

LTG : )

#9 50 days ago
Quoted from abrnpilot:

I replaced the upper left flipper on my TAF with an entire new assembly and I wired the coil just like the coil I took off. When I pressed the left flipper button I blew a bunch of fuses and who knows what else. When I looked closely at the assembly that I took off I realized that someone had wired the coil backwards in the bracket (wire terminals where the plunger hits). The assembly I put on has the coil facing the proper direction, so in essence, I wired the new coil backwards. Now I have no power to any of my coils. Has anyone ever experienced this?

Whenever I am replacing a flipper coil in a WPC machine, I carefully tag each wire before I desolder or cut them off:

END BAND, MID BAND, NO BAND (BAND = Banded end of diode)

That way, it doesn't matter how the coil was oriented previously, you will always get the wires back on the right lugs.

RussM

1 week later
#10 43 days ago

Hey guys, I replaced the transistors and I put in a brand new coil. Now when I turn the machine on the upper left flipper becomes powered and stays up. I am lost.

#11 42 days ago
Quoted from abrnpilot:

Now when I turn the machine on the upper left flipper becomes powered and stays up. I am lost.

Something on the board.

You might need a board repair guy to fix it.

LTG : )

#12 42 days ago
Quoted from abrnpilot:

I replaced the upper left flipper on my TAF with an entire new assembly

Quoted from abrnpilot:

I can see two that are obviously toast at q7 and q11.

Quoted from abrnpilot:

I replaced the transistors and I put in a brand new coil. Now when I turn the machine on the upper left flipper becomes powered and stays up.

fliptronic_transistors.jpg

You replaced the upper left flipper assembly.

Then you replaced Q7 (GREEN) and Q11 (BLUE).

You should test all the transistors using a DMM. You don't have electron vision so you can't see if a component is working on not.

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