(Topic ID: 229204)

Help me look as dumb as I feel. KOS


By V_piscopo

6 months ago



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  • 22 posts
  • 5 Pinsiders participating
  • Latest reply 6 months ago by Quench
  • No one calls this topic a favorite

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#1 6 months ago

I picked up this Bally Kings of steel two weeks ago and have sorted out all the problems but one...... The right flipper is not working correctly. I have a new eos switch, new cab switch, alltek SDB, also a new coil installed but I'm almost positive I have it wired incorrectly. I changed out a bunch of caps on the sound board and brought it back from the dead no problem.....so why is it I can never solve the easy stuff? Help me look as dumb as I feel and tell me how I wired this wrong?

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#2 6 months ago

Is the spliced wire (white/brown to red and back) shorting to the coil stop?
Looks like the splice joint is bare wire.

#3 6 months ago

It is bare wire and I have yet to fix that but that is not grounding.

#4 6 months ago

Ohms on left coil 3.2 (working double flipper) ohms on right coil 295 (single coil) lol.

#5 6 months ago
Quoted from V_piscopo:

The right flipper is not working correctly.

What exactly is the problem?

#6 6 months ago

The flipper is not working. I know I have hold power as I can hear the coil energise and while holding the flipper button and manually plunging the the plunger it will hold on it's own when it hits the coil stop. The plunger releases when I depress the flipper button.

#7 6 months ago

Can you post another picture from the other side of the coil showing the diodes? If I'm not mistaken, you've wired the EOS switch across the thrust winding of the coil instead of the hold winding.

#8 6 months ago
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#9 6 months ago

The brown wire soldered to the orangle wire on the coil lug should be moved to the lug on the other end where the double brown wires are.

#10 6 months ago

That imeaditaly blows a fuse when the flipper button is pressed.

#11 6 months ago

Show us some more pictures of how you've now wired the coil including the EOS switch.

#12 6 months ago

I did nothing to the eos switch. Mearly change the brown wire on coil lugs.

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#13 6 months ago

You sure that brown wire you resoldered isn't touching the middle lug - can't tell from your picture.
Is there any wires touching the flipper mech metal frame? This could cause a short to the EOS switch when the crank touches it.
The diode on the flipper coil between the orange wire and the centre lug could be shorted.

Did the fuse blow immediately when you pressed the flipper button, or did it blow some seconds after holding the button with the flipper in the up position?

#14 6 months ago

Yes I am positive that the wire I re soldered is not touching the middle lug (double checked) I am positive there are no bare wires touching the flipper frame or any part of the mech. This is a brand new coil and I doubt there is a diode issue although I am more than happy to stop and check although the last coil showed the previous symptoms. Lastly the fuse blew imeaditaly when I pressed the flipper button. That's all for now. I have the day off tomorrow and am open to all suggestions but tonight it's off to bed.

#15 6 months ago

For the F4 fuse on the rectifier board to blow immediately when you pressed the button means you have a short across the thrust winding of the coil. The thrust (primary) winding is the thicker wire winding. The hold (secondary) winding is the thin wire winding.

With the machine off, put a card between the EOS switch to open it. Measure the resistances across the coil and compare results to those printed on your coils pincoil label.

#16 6 months ago

When the eos is closed it reads around 114 ohms when the eos is held open it reads 295.5ish ohms. How sure are you that the wire configuration is correct? The reason I ask is....I went back through to tripple check nothing was shorting and resoldered the 3 brown wires to the far right lug put in a new fuse and started her up, pressed the flipper button and a spark came from that lug completely blowing off all 3 brown wires. The fuse was not blown and the game was still on so I pressed the flipper button with that lug completely disconnected and the flipper worked. Lol.

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#17 6 months ago

After all this fiddling, I would determine if the diodes are still any good.
At this point you might wire it correctly, and blow the fuse w a bad diode.

#18 6 months ago
Quoted from V_piscopo:

How sure are you that the wire configuration is correct?

I'm 150% sure. The wiring is even printed on the coil label:

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Lug 1 where +43V goes are the double brown wires you have. The EOS switch is connected across lugs 1 and 2. Lug 3 where your orange wire is ultimately goes back to the flipper button via the solenoid driver board.

With the EOS switch open you should measure 322 ohms resistance across lugs 1 and 2. And you should measure 3.1 ohms across lugs 2 and 3.

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#19 6 months ago

One or both of the diodes on that coil must have been fried. I pulled the coil, put on new diodes, resoldered lugs, and checked resistance. Everything checked out so I fired her up.......and boom goes the dynamite, working like a champ. Thank you for the help and making me look as dumb as I felt when I could not figure it out!

#20 6 months ago
Quoted from Quench:

I'm 150% sure. The wiring is even printed on the coil label:
[quoted image]
Lug 1 where +43V goes are the double brown wires you have. The EOS switch is connected across lugs 1 and 2. Lug 3 where your orange wire is ultimately goes back to the flipper button via the solenoid driver board.
With the EOS switch open you should measure 322 ohms resistance across lugs 1 and 2. And you should measure 3.1 ohms across lugs 2 and 3.
[quoted image]

I have a similar problem, I have a Bally Black Pyramid with a dead right flipper. I picked it up on Saturday so not a lot of time to go through the manual. Based on the drawing I have +43v on Lug 1. It has 322 ohms between lugs 1 and 2 with the EOS open but it is open on lugs 2 and 3. Does that mean I have a bad coil or could it be something on the MPU? thanks in advance!

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#21 6 months ago

May want to start your own thread. Does the coil fire when you ground the far right tab?

#22 6 months ago
Quoted from dmgm3:

It has 322 ohms between lugs 1 and 2 with the EOS open but it is open on lugs 2 and 3. Does that mean I have a bad coil or could it be something on the MPU?

Something weird is going on with your coil. There should be two winding wires on the middle lug, your picture only shows 1 winding wire. Can you post a clearer picture of that area where the diodes are on the coil - your pic is blurry in that area.

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