Pinball coil resistance chart. Lower resistance than factory = more power. for taking the time...

Pinball coil resistance chart. Lower resistance than factory = more power. for taking the time to fix the layout! Thanks to folks (Rich & others) finding typos and errors! Note that if you can't find your exact coil that you can ignore the letter prefixes as the part that matters is the gauge and the number of turns. With the rear legs at maximum and the front legs at minimum, I only get a left ramp fly off every once in a while after a fresh wax (although I might have a little slop in the flipper linkages at this point). What causes a coil to lock? On Thursday, my very happy Haunted House table was playing fine. Order correct replacements per the chart. Actually, the pop bumper coil is an A-4893. com/coil-resistance. I found several places on the internet discussing repair of pinball machines, and 50Volts seems to be the rule. . The Google translation may have errors, the original information was in English only. html As LTG said, use a multimeter to test the resistance of each coil to make sure they match the spec. Resistance for Stern Pins – A PDF archive list of Stern coils, including some of the ones for some Data East / Sega pins. Essential for pinball machine restoration and maintenance. A 26-1200 (often used for knocker, kicker or slingshots, etc) will have a resistance of around 12 Ohms. Coil substitution data and typical coil use is also presented. 2 ohms resistance. Its DSP architecture was a significant improvement on earlier systems, and it allowed Williams to use recorded music from EPROM rather than synthesizer music. This information is also helpful should you run across some of these coils so you can use them in newer machines. The first letter or two indicates the type of sleeve, the position or length of the wire terminal lugs. The schematic is not a wiring diagram. That's a similar gauge and a little stronger. Each schematic contains common elements and follows certain conventions as described below. Getting the right electronic equipment to work on your solid state pinball machine. Mar 4, 2024 · Introduction to understanding pinball electronics. How can I find the standard for specific coil resistance? My impression is that it should be in the schematic of the pinball but I’m at the very The Pinball Resource The Pinball Resource Gottlieb Coils Webpage Wiring and Connectors in Pinball Machines Usually there are two types of wires/connectors used in a pinball machine. It will take you to flippers. Stolen from pinballmedic. How close does the wire gauge need to be? I have a Capcom 23-800 coil on my bench. 9 ohms Check Coil Resistance. Then look for the part number listed in the manual and note the specified resistance. This list covers components that usually fail in pinball machines Does anyone know what the colour coding is for flipper coils or where I can find a chart? I believe the strength of the coils is linked to the colour of the sleeve around the coil Thanks a lot!! Fuse List Rectifier Module AS-2518-151 F1 5V Unregulated input F2 43V Solenoids (2 flippers) F3 230V Display power input F4 Feature lights Phase A F5 Feature lights Phase B F6 General illumination BackBox F7 General illumination Playfield Sol. See Voltages and Power for details about the different voltages and power requirements. Oct 22, 2009 · Can someone explain to me what the numbers on coils mean? They are related to how powerful the coil is i think. Feb 13, 2026 · The power winding of a flipper coil is only a few ohms of resistance so it doesn't take too much added resistance in the EOS switch to degrade the flipper power. Next in line stronger coil ? on how the table is sorted when you open it or do you select a column first ? Dear Pinball Medic, I'm just sending you this short message to thank you for your detailed charts about pinball coils. The reason we care is that coils in a pinball machine require a lot of current to create their powerful mechanical motion. O. You can also test the operation of the coil by sending the proper voltage thru a test wire to see if it operates. Overall I think they are the best strength coil for the game. This very basic action is the foundation of all pinball machines. 2 ohms. Williams used 50 volts AC for coil voltage until 1962 (Friendship7), when Williams changed to 24 volts AC. The reason? Basics Pinball Makers is focused primarily on providing practical, real world information for the creation of pinball machines from scratch, but there is a large segment of people who are interested in building a game but do not have experience with the basic components involved inside a pinball. Sep 22, 2021 · On the bright side, that coil will now be about 10% stronger! Where are you getting the 12 ohm spec? Google pinball coil resistance chart, if you need to confirm. A coil uses the same principle. It represents a logical description of the machine's electrical circuits. 5 ohms on it. How To Ohm Test Pinball Coils and Relays Pinball Repair #Pinball #Coil #Relay #Ohm Mark's Basement Arcade 3. If the fuse for that coil starts blowing, it's too strong (far out of spec). But I also have a Williams 26-1500 coil, which is a closer gauge but a little weaker. 21 years ago Post by Steve B. Updated resistance/size/coil chartThanks to Jim P. Google pinball coil resistance chart. A-9735 14 ohms A-15555 15. If you look at the key at the top of the page, it explains that 4R2 = 4. List of Stern / Data East / Sega coils. I went thru all coils and found a few that need replacement. Read this first! This diagram is showing how to use bank A to control high power coils and bank B to control low power coils or flashlamps. Coil Cross Reference – Extremely helpful information about pinball coils and cross references from Pinball Medic. switches marked L 1 & L 2. Resistance for Stern Pins – Web archive from Wayback Machine. At what point does the difference in gauge make a difference? If you want to compare the strength of different coils you can get the number of windings and their resistance from one of the following pages: Pinball Medic Coil Chart There are two ways to determine the correct reading: * Test another identical coil on your machine. Low resistance coils will blow the solenoid fuse. Controlling coils Coils are used for a variety of features in most pinball machines. Voltages and Power A pinball machine uses multiple different voltages for different purposes. I generally replace any fried looking coil without testing as if it is not dead yet it soon will be such as a Lock Coil which by the way buzzes even when it is good. 2K subscribers Subscribe Go directly to The Coil Charts Coil Sleeve & Flipper Bushing charts Electro-Magnetic Coil types Pinball Game Type and Coil Chart Abbreviations Metal VS Plastic coil sleeves Coil Part Number suffix & Prefix numbers and letters Coil Wire Turns and Strength Rules Flipper Coil Wiring Flipper Coils, Drive Circuits, Coil Supply Voltages and Current Welcome To The Pinball Resource Signature Page. Any coil that looks heat stressed (has a charred wrapper) should either be replaced or at least have its resistance checked. 7 ohms (taken on outer contacts) A-9746 1. Thus our consumer get a product that works correctly and will last a very long time! Tuukka Pinside member 7y 97,550 2,899 This table is a great help for comparing coils: https://www. Since flipper coils on the Scooby Doo upper PF are activated simultaneously to the coils on the lower playfield, especially in trap play I would expect some effects… I rarely see it utilized, but Scooby does have staged flippers! Dec 31, 2020 · The SFL just has the one diode; the coil in the UpperRight of my machine (FL-11630) has the 2 diodes. If your original coil has a diode, and the new one does not, simply move the diode to your new coil or we offer new diode #SC-1N4004 for $0. Note: 5R2 means 5. Including reading schematics, tools and supplies needed, plus basic measurement and troubleshooting. Mar 13, 2026 · With Indiana Jones: The Pinball Adventure, Williams introduced the DCS sound system. Ohm's law shows that high current moving through resistance (the wire & connectors) will cause a voltage drop. Now stop thinking about pinball during work hours and please make sure those control rods can be inserted. To find the correct factory resistance, google pinball coil resistance chart (like I mentioned above). Pinball Medic Coil Cross Reference – Extremely helpful information about pinball coils and cross references from Pinball Medic. Thanks! PM - It appears these amusement Steppers - someone replaced 50 volt coils with the 24 volt coils that they had lying around. Replacement Brass Screws and Washers for Relay Coils are listed on our Tools Webpage PBR External Links Master Cross Reference Chart – A list of the coils and their resistances. I have a coil I need to replace (AE-25-1000) on a Shadow machine. This page is devoted to some of the Signature collection of parts that The Pinball Resource has re-engineered and re-produced to exceed the original manufacturers specifications. 5 and 8. I don't have a replacement coil but I do have a bunch of other spares. May 15, 2023 · Information on pinball coil construction specifications are presented with additional details on coil driver circuitry, reverse EMF high voltage/current protection, power supply voltages, coil body and part number differences by manufacturer, coil part number prefix, suffix, flipper coil operation and parallel/serial flipper coil construction Feb 10, 2026 · Yes, type in pinball coil cross reference guide. Promoted items from Pinside Marketplace and Pinside Shops! Solenoid Coil Sleeve Chart Measured in Inches. Ken Layton started the Exhibit coil info with a nice long list, we all miss Ken! Oct 5, 2012 · It all boils down to resistance. Pinball Resource has the correct part. Not 1 or 2 ohms, 1 or 2 tenths of an ohm. Dr. Feb 10, 2026 · Yes, type in pinball coil cross reference guide. This impedance would be used in the Ohm's Law formula for coils and motors in A. Find the resistance of each coils. Flipper solenoids require both high and low power coils wound together in a single package. 2 ohm respectively. Apr 5, 2024 · From Clay Harrell's guide for repairing EM pinball machines: Voltages Inside EM Games. What is the expected ohms reading for a AE 27-1200 coil? This is the lock release coil in my TZ that’s driving me nuts. It’s just a coil of wire. I measured the resistance of the first and second circuit and they came out as 0. Pinball – Electronic Component Substitutions This guide provides information on substitutions for electronic components typically found on solid state pinball machines. Comprehensive guide to pinball solenoid coils: types, repair, wiring, and part numbers. 5 ohms pink label (odd ball from GTB, no clue what it's for) * Game Plan coil 21-30004B 33. Common features with coils are flippers, slingshots, pop bumpers, drop targets, diverters, etc. Installation of DIY fans on all three flipper coils solved the problem for me. com) I've got a quick question regarding the old Williams EM flipper coils, namely the FL-21-375/28-400. If less than . I started with the chime relay that was shorted. One of the steps when you get a new machine, before turning it on, you want to go over a few things, and an important item is to find out if any coils, also known as "solenoids" are burned up. Easy to follow step by step replacement of pinball flipper mechanisms that a non-technical owner can follow - with lots of pictures. html 0 0 0 Hi folks, Simple question. Being such it will represent lamps, motors, switches, coils, and so on--but will not Feb 13, 2026 · The power winding of a flipper coil is only a few ohms of resistance so it doesn't take too much added resistance in the EOS switch to degrade the flipper power. I read 10. When substituting a different coil (even from a different manufacturer), what is the best way to ensure the coil is a similar strength? Is resistance the best indicator? So two coils with similar How to wire coils & drivers to I/O boards in a FAST Nano-controlled pinball machine Wiring, high voltage, and electricity can be dangerous. Pinball Tip: Reading an electromechanical schematic is not difficult once you understand the symbols. I'll get the right coils next time I order from PBR, but it would be helpful to know what I can substitute in a pinch. Sep 29, 2022 · Information on pinball coil part numbers, coin operated arcade, EM Gun game coils and relay cores by manufacturer. The closed switch L 1 keeps the L relay energized, even though the pinball has bounced away from the bumper and its contact has opened. But usually anything below 2 ohms is a bad coil. Jul 29, 2011 · Hi pinthreaders after another recent PM query regarding replacement coils for ZZZ machines, heres a link that I use PINBALL MEDIC has a great amount of info on COILS Measuring a coil resistance is a GUIDE ONLY! Coils are actually measured for inductance NOT resistance but most people don't have an inductance meter and resistance is usually a good enough ball park. Most EM games work at 25 volts for the coils. I'm using some old EM pinball relays in a project and find myself wondering how the coils for EM relays were selected by the game designers. 17K subscribers Subscribe Subscribed Jul 21, 2011 · In order to check coil resistance put your DMM on its lowest resistance setting then put the DMM red and black leads on each coil lugs. We would like to show you a description here but the site won’t allow us. I knew that there are higher resistance, lower power coils intended for things like hold and coin lockout relays that are on most of the time. There are pinball machine solenoids with one coil or two coils. I then moved to the lock relay, which was measuring low resistance compared to charts online and looked partially burned up. Keeney coil list from WICO 1959 catalogue, added April 6, 2016, resistances and wire guage info would be appreciated. 8-ohms resistance to suddenly 15. Explore the complete ignition coil resistance chart with primary and secondary resistance values for all major brands, from Briggs & Stratton and Honda to Toyota. See Wiring and Connectors for more details on the wire thickness and connectors to use for the different power rails below. Sep 30, 2025 · How to repair and rebuild pinball machine flippers. Does anyone have a reference for gottlieb relay coils? I'm trying to determine interchangeability. As for a pinball coil, the resistance check is not done for the strength of the coil, it is usually done when a driver transistor fails or a fuse blows and you want to make sure there isn't a short. There are several things we need to consider to determine the feasibility of using a substitute coil, but the big three are; the wire gauge, the number of windings in the coil, and the bobbin. The game would play mostly after I replaced the chime unit. /Volt. I have a table of common coil resistances in this document here. Not 3 ohms. Turned it on Friday night and "Thunk! Thunk! Thunk! Thunk! Thunk!" I grabbed my DMM and opened the sucker up. It depends on how many windings your coils have, how worn out your coils are, how clean your coil sleeves are, how tight your flipper bats are to the playfield, how free-moving your linkages are, and how much voltage you're using. flippers. Let’s explore the different types of coils and other parts of a pinball machine. You need at least one power supply unit (PSU) to transform the AC power to multiple DC rails. Some machines have coil pulse times set really low, like 12 or 14ms. The Pinball Resource The Pinball Resource Data East / Sega / Stern Coils Webpage Likewise a Bally pop bumper coil in a Gottlieb game would be way under-powered. If you have an old enough Bally pinball, you'll find some of the coils with strange part numbers. This Oct 17, 2024 · No pinball coil on your machine should read 0 ohms, no matter where you read it. (If you don't see the Google Translate's "Select Language", then your browser is blocking google translateso enable googleapis. 5 ohms The extra loops require more wire which adds to the resistance of the coil and further limits the electric current that can flow through it. This list covers components that usually fail in pinball machines Find wire gauge-windings on the chart, look to the right to find the resistance. C. So, is the difference between Serial and Parallel coils for flippers just the difference of the placement (and number) of the diodes? Or are there wiring changes in the actual machine? I do have 3 new FL-11630 coils coming. We are building pinball relay coil charts and will either post them here or on a separate page. Here’s a coil resistance chart that shows you what’s in spec for the specific coils you have: https://www. Your 30-2000 is generally the sort of coil used on a bell or chime and has a resistance of around 45-50 Ohms. Pulling wire off the coil to lower the resistance a bit works wonders instead of buying a new coil. 1 or . Jan 27, 2026 · Summary and Recap Testing a pinball coil with a multimeter is an essential skill for any pinball enthusiast or technician, demystifying common machine malfunctions and empowering you to perform accurate, cost-effective repairs. We're a small family run coin-op business in France, and thanks to your charts (in this case the resistance values for the coils) we were able to finally put an end to our Indy's reset problems (bad coil at 75 ohms instead of 135ish). *NOTE* . Your coils should be within . If it reads 0 ohms, it is shorted out, and will cause a short circuit, and will blow fuses, but also if the fuse doesn't protect the circuit, it can damage the circuitry or the wiring. 3. If someone says a coil should measure 27ohms expect that a reading of anywhere 24~30 would be normal. 3 ohms is less than 1 ohm. Jan 7, 2012 · The solenoid style coils weren't too different from other manufacturers. I'm tinkering around with some old EM parts in my pinball projects and I was surprised about the kick of those coils. Ordered a new coil from Marco (actually, a couple of coils just in case) and will I installed 11630 flipper coils about 4 years ago in my game. Note that the value you read could be off a little bit. I had to do this on my outhole kicker coil as well, to get it consistant on longer games. AS-2518-147 F1 190V Display power output Under the Playfield fuses F1 Solenoids Transformer Module F1 Main fuse I thought I would post some ohms values of Gottlieb coils for help in troubleshooting. Sep 29, 2022 · Page Comment: Dear Pinball Medic, I'm just sending you this short message to thank you for your detailed charts about pinball coils. How to use the digital multimeter voltmeter, and other test equipment. net: Late Model Williams Electronic Pinball Game Flipper Coils (1990-Later, DC Powered Coils) Flipper Coil Sleeves Coil Sleeve Length Chart Flipper Bushing Chart FL11753 used for small flippers, parallel coiled, "weak" flipper strength (Yellow coil wrapper) - power 9. What you may need to do is unsolder one lead from the solenoid coil or relay coil in question (to prevent false readings from other components in the circuit) and measure the dc resistance of that coil (resolder it when finished of course). Bat coil also likely replaced with whatever was handy. A resistance of two ohms or greater should be seen anything less than two Ohms and the coil is bad. It's the only pop bumper with that coil and, looking at that chart, the resistance is about right, so I guess it's ok. Jun 24, 2025 · The result is that the coil becomes an electromagnet and attracts the armature which pulls down to the coil core and closes the 2 N. A-9736 A-9740 A-1119 A-17564 A-16890 Thanks, - Steve Coil Replacements A-9736 25, R20-5, A-7677 A I'm working on a 1965 Williams Bowl-A-Strike. These are new coils, (some NOS), from Steve. Some circuits are more sensitive to component values than others. com scroll down. However, the proper length and style of coil sleeve may need to be ordered. The Pinball Resource The Pinball Resource Coils/Sleeve Webpage Feb 24, 2024 · Hi all. 8-ohms! Wow. Clean and gap the arcing switch, might improve things. This should be used as a guide; it’s always best to replace with the correct component. The lockout relay coil is a number FC-33-2600 and it is a special high resistance coil of course because it is energized almost all the time that the machine's power is on, so it is made with a higher resistance than most of the other coils in a pinball machine which are only energized for very short durations of time. Feb 28, 2014 · John Robertson Feb 28, 2014, 11:15:43 PM to Continue reading on narkive: Search results for 'Coil Resistance Chart' (Questions and Answers) 4 replies Steve Charland 17 years ago Hi John, That chart is another good thing for the pinball community you've done, bravo! Here are 2 more to add from my records. New United coils from United's STARLET were sent in by Phil and he also sent updated resistances on Bally old coils from Pacific Pinball Museum. circuits only, in place of "R (L)," and would be labelled "Z (L)" to differentiate it from other true resistances in the circuit Mr. coils). 3 ohms or so, you should be ok. Solenoid description No X-Y-Z Drop Target Reset Left Bottom Saucer Right Bottom Saucer The Pinball Resource Williams Coils Webpage Some of our coils come with Diodes! If your original coils does not have a diode, simply remove it from the new coil. 2 ohms of factory. Others might be 60 or 70ms. Sep 17, 2015 · Looks like pinball machines use 50Volts DC to operate the solenoids. 8 ohms A-5141 6. There is a guide of manufacturers coil # and resistance. May 4, 2017 · As for a pinball coil, the resistance check is not done for the strength of the coil, it is usually done when a driver transistor fails or a fuse blows and you want to make sure there isn't a short. Mar 12, 2026 · Rebuild pinball flippers for Williams-Bally WPC, Williams System 3 - 11 machines. Current is determined here by the resistance of the coil, so if the resistance remains constant and you double the voltage, the current will increase too, as well as the work done. The coils can usually be checked still in the game without having to disconnect any wires . Coil Table Sol. This chart allows you to cross-reference these with more modern part numbers should you need to make a substitution. One of the coils went from 2. 8 ohms; hold 165 ohms FL11722 "weak" flipper strength, parallel coils (Green Coil Wrapper Color) power Conclusion The number of turns on the coil has only a secondary bearing on the force of a solenoid, which comes about because of the effect on the average turn radius, which determines the winding factor. One exception was Bally during the 1970s (50 volts), and Williams. One for all low current connections (i. While adding (or removing) a turn will increase (or decrease) resistance, thereby decreasing (or increasing) the current, this effect on the force is counterbalanced by the fact that adding Pinball coil ohm resistance difference A-4893 standard vs yellow dot Leebo's Pinball 1. switches or logic) and one for high current connections (i. Higher resistance = less power. The majority of Williams coil part numbers indicate the construction method of the coil. Does that switch carry line voltage? 0 0 0 #4 6 years ago SMM I've got a quick question regarding the old Williams EM flipper coils, namely the FL-21-375/28-400. 6, 1971. * Look up the correct value in a coil chart here, here, or here. New replacement solenoid coils are shipped with a coil sleeve. The most important thing to match when substituting a coil is resistance. Jun 8, 2016 · The part number's two-letter prefix identifies the lug positions as viewed from the coil's round end, with the lugs pointing away from you: AE- means that the coils's two lugs are mounted in the two end positions: AL- means that the coil's lugs are mounted in the left and middle positions: AR- means that the coil's lugs are mounted in the The sum of these two resistances (resistance and reactance) is called impedance. The solenoids with two coils are used in the flipper arms. e. This is from an original Bally chart dated Jan. -S * Gottlieb coil A-26450 41. Remember the flipper coil is actually two coils in one package - a high current, high power, low resistance coil, and a low current, low power, high resistance coil. Step-by-step instructions to make fixing easy. As electric current travels through the coil, an electromagnetic field is created, and it moves a plunger in the coil. As a basic rule, increasing the coil wire gauge by two sizes will double the coil resistance per foot (making the coil less powerful). Jan 27, 2021 · Does anyone know how Coils are described by their Product Codes? The Williams codes appear to be two pairs pair of numbers, such as FL 20-300 / 28-400 for the Flippers (FL?) so it may be that this is the AWG and the number of turns. 11ea. 3 ohms A-9736 24. Reg. The board also introduced dual amplifiers and an electronic crossover. So I started to think about coil substitution. Those are high resistance coils, nothing unusual. We're a small family run coin-op business in France, and thanks to your charts (in this case the resistance values for the coils) we were able to finally put an end to our Indy's (IJ) reset problems (bad coil at We are building pinball relay coil charts and will either post them here or on a separate page. Just put your DMM set to low ohms and put the DMM leads on the lugs of a coil. Replacing old dirty coil sleeves and cleaning the coil plunger are the least expensive ways to cure sluggish solenoids. ggp nri cijwp ldyjr ulud wymmkx kucxtr teykm qfncns rytc