(Topic ID: 177504)

Williams Cyclone Electrical Issue: Power Supply?

By Fred802

3 years ago

Topic Stats

  • 3 posts
  • 3 Pinsiders participating
  • Latest reply 3 years ago by Steevsee64
  • Topic is favorited by 1 Pinsider


Linked Games

#1 3 years ago

I have a Williams Cyclone pinball machine that I've been restoring. So far I've: stripped the playfield of mylar, cleaned and polished everything, rebuilt the flippers and pop bumpers, replaced a burnt up relay board, installed a CoinTaker Premium Non-Ghosting LED Kit, relocated the batteries, replaced the rubber components, and many other miscellaneous things.

After all of this work was done, the machine worked pretty close to perfect as you can see in this video:

But it had an issue where after turning it off then on again, the machine seemed as if it wasn't getting steady power. The flippers, slingshots, and pop bumpers would not hit as hard, the coils wouldn't snap as hard, and the alpha-numeric display would not illuminate fully (segments were not lighting up). This problem persisted for weeks and would come back seemingly randomly.

Now, a couple months later: many of the LEDs won't light up, the ferris wheel doesn't spin, and the flippers, slingshots, and pop bumpers don't work; as you can see in this video:


Any ideas on what could be causing this? It seemed as if the machine wasn't giving steady power to all of the components and now it's barely giving any. Would replacing the power supply: http://www.marcospecialties.com/pinball-parts/D-8345
be the fix? Or could it be the wiring underneath the playfield is bad? Any other ideas? Thanks!

#2 3 years ago

You have a long list of things you have done so far. Testing and tuning up the power supply would have been at the top of my list before all that other stuff. At minimum, would probably need filter caps replaced. How about checking repinning the power supply cables? The power supply cable that runs to the top of the System 11 MPU is notorious for needing attention - I had to repin those for several games to prevent random reboots. Your DMM is your friend. Test all supply voltages both immediately when the game is first fired up and after it has come up to temperature, check your AC ripple voltage, and check at the test point on the other boards (can show if there are losses from connectors and cables)

#3 3 years ago

Experienced a very similar problem on my own Cyclone.
Ended up being caused by the capacitor in the blanking circuit.

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