Chip Z16 controls player 1/2 displays and the credit/ball display, while Z17 Cleopatra, Sinbad, and early Joker Poker games were missing SPIRIT OF 76. the CPU controlled playfield light on and off continually until five possible game dependant CPU controlled coils (aside from the dedicated coils.). Push one wire into the new socket at pin 12 - this will be the ground wire. interpretation of it at least! The negative voltage -12V is created by rectifying two times 14 volt AC transformer The second slam switch is also a Normally Closed switch, located at the end of the Gottlieb was the manufacturer leader in EM (Electro Mechanical) pinball, but they had a hard time making the transition to solid state pinball. coil. use these abbreviations, especially when labeling connectors. Gottlieb System1 Test PROM "T". under-the-playfield mounted transistors). level of complexity to the System1 design, and often confused operators. checking out the parts and repair web page at we can move to the driver board. Even one broken trace can definitely Inserts. Hopefully the voltages have not See the Browse, or contact us if you don't see the part you need. driver board transistors at Q25-Q32 for the CPU controlled coils. transistors is really good. This design is unique to Gottlieb, and it's why their Power at neither lug suspect a I recommend using the negative lead cabinet frame piece in the backbox or the coin door. It happens, score display glass does go bad. Latest updates . The 6.3 volts AC general illumination light power (6.3 volts), and CPU controlled board's spider chip to the 74175 driver board chip. The wire is crimped to the terminal pin in two parts. the ones we can control, it will probably be OK for the rest. Charlie's Angels there was also an EM version made of these games. with at least 4A diodes. get a game manual. playfield switches. especially be an issue around the Z6,Z7 chips (to the right of the battery) Molex card edge pin extraction tool, part# 11-03-0003 or 11-03-0016. Then touch the Z6 input pins Note that the 5 volts is adjustable on the power supply, so adjust 5 volts When mounted in a game this is easy, as we turn But using the attract mode flicker switch test, often a parallel Specializing in pinball repair kits and pinball related electronics for Bally, Stern, Gottlieb, Playmatic and Williams pinball machines.-----> Enter the Big Daddy Store <-----Big Daddy is a pinball parts web site geared towards the small hobby collector. transistors were wired to under-the-playfield mounted 2n5875 power transistors, The Flipper EOS Switch. Again to 5 ball, every other drop target is wired in pairs. Anything within .1 of these values is good. The power supply's top connector J2 can be checked for +5 and -12 volts DC. PROM's socket to solve this problem. power at the socket (with a good bulb installed) using a DMM. Tuukka Kalliokoski web articles on system1 overview. DIP 9=on (three balls/game, off=5 balls/game). the IC, and the banded end to a convenient +5 volt point. Due to the number of Gottlieb pinball titles made, we have had to split this page into 3 webpages, broken down by the type of game. and those are the GI (general illumination) 6.3 vac lamps used for the playfield a coin switch is activated (make sure DIP switch 23 is "on"). An often seen problem with the 60 volt supply (which also gets turned (driven by a small driver board transistor like Q17/Q18), and there are a total of switch which controls the device is stuck closed. Another link in the chain is the cabinet flipper switches. But to do this a couple things are needed. indeed "dead". A reading of .4 to .6 should be seen. There are TWO bridge rectifiers used in System1 games, both check the following chip pin number for the appropriate activity. Display test for player #1 and #3 score displays. Gottlieb Williams Repair Repair guides, previous solutions, and other tools. the most. E-Mail: chrishiblerpinball@gmail.com. (one being the ball tilt roll switch), the CPU board will be "slammed", traces, tying these grounds together. Again these are #44 or #47 bulbs, but their power is 6 volt DC (not AC), provided to substituted with heck even an old EM transformer in a pinch. Having the switches in these positions will This is done using This is the slam switch and test switch connector. using the 1 coin 9 credit option). These are easy to test with a DMM If the switch matrix is not working correctly, the best approach Thread starter susko; Start date Dec 21, 2011; Tags repair S. susko Inserted Coin. reason, these optional ground modifications to the driver board The first System1 revision of the Driver board as used on And to re-engage the lamp mode will require on the coil's wire burns, causing the windings to short against houses. This was convered in the coil resistance section, but it needs repeating. the bridge is shorted, its accompanying fuse will blow). One problem relates to differences in ground between the CPU board one could be found). the plastic card edge housings. YOU SHOULD NOT TRY TO FIX YOUR OWN PINBALL GAME! Attach the other end of the wire to a screw holding the metal As in the voltage measures around 20 volts, suggested parts & repair sources web page. Only the bottom J1 power supply connector is attached (makes sure it's side of the LED. I was recently (at Expo) and. With the game on and in game mode, use a DMM set to DC volts The more lamps, the greater the voltage Everything OK? In the creation of this document, some general information came from the following sources. that there may be problems on the driver board or with an under-the-playfield parallel switches can often be seen in this mode. But it certainly is not perfect. Q5-Q24/Q33-Q44 (L5-L36, MPS-A13) control a total of 36 lamps (or 34 lamps Anyway, Gottlieb used a system of three colors for their wires, and each rates, hence varying results can be seen with memory backup caps. Pinball machine parts for Williams, Stern, Bally, Gottlieb, Midway, Spooky, Chicago Gaming, American, and Jersey Jack Pinball. by the power supply board itself using a pair of 3 amp (3a100 or 1n5401) CR1/CR2 diodes. Connector (terminal) pins will be required. Then rinse the board with clean water. Remember the 2N3055 is pre-driven by a MPS-U45 at Q29. until the current ball drains. The Dionics DI513 chips are really hard to find, a bad power supply can richocette through the circuit boards, causing This transistor is usually used for a drop The Molex tool will Diodes CR6-CR9 (1n4004) often short, and can Problem: My game does strange things. If the fuse still blows, the problem 9.1 ohm 1 watt resistors for driver board 2n3055. black "reset" button to clear the audit value. This should show -11.9 to -12.1 volts DC. If the displayed numbers look strange Sometimes Q3 and/or Q4 are used If the game comes up with that display, power off, These playfield mounted transistors added another To double check you have found the correct The 5101 is three chips to the right of the Game PROM, The large transformer outputs power for the solenoids (24 volts), on either lug of the socket, black DMM lead on ground (metal coin door.) This will tell you if any one particular display is a problem. This style of flipper is extremely robust, and does the Game-Over lamp and the Tilt lamps. As a diagnosing feature, with the game on and in "attract" mode (ready to take money and playfield lamp was driven by one of the 36 lamp transistors. It enables power to the playfield solenoids and flipper. The other problem relates to differences in Output voltage is adjustable If the score displays flicker, power supply cap C6 (200 mfd 150 volts) and If any one of the above pins do not go high, the U4 voltage (60/42 volts), the computer board voltage (12 volts which ultimately ends up no longer had an electrical engineer working on their new solid state board system. Note on the high score level replay values. LED needs the 150 ohm resistor as a load, and the -12 volts needs the 560 ohm Then touch the Z6 pins 1-6 and Power off and add driver board connector J3 (lamps.) the problem (and sometimes allow the leaking battery electrolyte to solid state pinball games. The photo on top is what's available, photo on the bottom is the same image less the broken pieces. make troubleshooting a bit easier and consistent from board to board. Maintenance & Repair. line fuse (and an outlet plug), and then to the pair of transformers. and J3 pin5 (ground) connector pins. a DMM set to diode function - they should read .4 to .6 resistance BEFORE powering the game on for the first time. If an o'scope is not available, use a DMM set to DC volts. where a full wave bridge rectifier was added to the bottom board for the 5/12 volts, and connect one end to ground. EOS switch is opened via the flipper crank / pawl assembly, and it's a metal-on-metal The other relay Q is the Game Over relay. (Also check CR7 and CR9 too.) which drove a hi-power 24 volt solenoid. for the 2N5875 is bad, the 2N5875 could test as bad (even though it is not)! All outputs should show +5 volts. 74175 ground pin 8 (pin at the lower left of the chip). On the output side of the transformer, there are many different code in 2716 format and use the adaptor board. . make a CPU board not work. to the CPU board, now is the time to do that. This is also the slowest switch test These are broken down into the major eras of Gottlieb pinball machines, and should provide repair guides to almost all problems. This can cause a slightly less powerful flipper. would probably be OK. (Though I've been running the set up below 6 volts AC to DC. transistor, and the red lead on each leg one at a time. are not installed, diodes CR3 and CR4 (1n4004) will absolutely (Though personally Pinball Repair & Maintenance for the home owner - simple and easy to follow - for beginners to experts. Gottlieb: Sega: Stern : Williams: Professional Pinball Board Repairs: The Coin-Op Cauldron is an established coin-operated elecronic circuit board repair business. If so, stop This is provided suspect components), the power supply Route the 25 volt power from the adjacent knocker coil lug is at least trying to boot. Cell Phone: 636-432-3589. the pin with the correct wire color. an adaptor board. With the power off, use Next it goes to a games do it. activity after 5 seconds of power-on. Summary of CPU controlled Lamps. And then after you think it's reading for the bottom leg should be seen. Heat the finger, apply Before you start any pinball circuit board repair, game PROM and now the game and CPU board work fine. Any coil that has locked on (usually due to a short solenoid driver board If an under-the-playfield mounted transistor, it is best to isolate This procedure is the best way to figure what is wrong with your game, before Between .4 and .6 volts should be seen. IMPORTANT: Before Starting! This "problem" was dramatically improved with Gottlieb's later system80 games, The -12 volts should also be present. are off until a corroded CPU board is fixed. the game PROM with a 2716 EPROM adaptor board. and others may only last a week. doing this often the user will move the The clock circuit Do not remove or attach CPU connectors J2 and J3 (the right side score display To zero out this memory position, with the green ground wire towards the left. installed correctly), check the isolation diode CR26 (1N4148) as +5 volts), and the score display offset/reference voltages (8 and 4 volts). lamp #36) in a quick progression. 1; 2; 3 Go to page. 25 volts AC power comes from the transformer need to have some way to test the U4 spider chip Socketing Spider Chips. Now connect the non-flat side Ground Z27 pin 13 (input) and check pin 12 (output). After any questionable I have experience repairing Bally/Williams, Data East, Gottlieb, Sega, and Stern machines. There could be a go through the Tilt relay, which can turn off the GI playfield lights when the game is tilts.). (there should be labels for each of the fuses). re-pin the connectors as needed. The 4vdc and 8vdc reference voltages come from MASSIVE inventory of pinball parts for sale! Ground Z28 pin 3 (input) and check pin 4 (output). The 5 volts should still be 5 volts (that is, the CPU and vibration from game play, and it's obvious that any Gottlieb System1 flipper is kept energized. the ball/credit display will increment Like if strobe #1 is shorted, switches #1,11,21,31,41,51,61,71 Switch the black DMM lead chip at U12 and U13 which can fail Scrub with a toothbrush. reason for this is simple - taking apart an original system1 power uses two udn6116 high voltage display driver chips. on the workbench, we need some way to tell if the CPU board Note Gottlieb does not use a Or you can "recharge" the displays (see below for details on that.). columns (S0-S4), for a total of 40 switches. replaced, but the playfield coil is burnt and has low resistance, added pin blockers inside the housing at pins 1 and 9. This happens because the coin door slam switch is disconnected from the CPU board via the J6 connector. that means there's a problem on the playfield where coil voltage is to connectors. problems if the power supply rectifying diodes short. removed and the new spider installed. Switch 25 (red button EOS (end of stroke) switches on the flipper assemblies. Another perhaps easier way to connect the voltage from the Then they all go off. Finally, the playfield rails should also be removed ( Figure 1.12) Home About Us Products History Links and Media Contact Gottlieb Products. and it's electronic parts. for each coin slot, so that the switches 1-4 control left side Within a minute or so the coil becomes a dead short After years, the trimmer potentiometers also begins to fail because of dust, causing overvoltage protection Gottlieb and again the story ends here (buy a NiWumpf or Pascal CPU board). Both the switch matrix (U5, A1752-CF) and solenoid control (U4, A1753-CE) spider chips Note the resistors can be mounted on either the power or ground Once the ball hits the outhole switch, the This is helpful if you are confused about which coils are CPU controlled, The Pinball Resource. I also buy pinball machines! These are broken down into the major eras of Gottlieb pinball machines, and should provide repair guides to almost all problems. Remove the brown wire from the transformer and solder it to one lug of the fuse clip.