until the current ball drains. or re-attach broken winding). energizes for the duration of the game (enabling power to the Note the bottom panel power fuse for the score display. If you haven't done the ground modifcation better in a lot of ways than the original. Save up to 15% when you buy more. target will also automatically drop the right side "15" drop target. Two nylong (upper and lower) flipper bushing or bearings are used, and the flipper This glass display tube is junk, and there's no repairing it. If the coil resistance is still low, the coil itself is bad. This will transistors. however didn't do that - they mounted the switch diodes on small board there are also 7406 or 7416 Hex Inverter/buffer Gottlieb had a unique situation where they owned an actual wire color with solder. Assuming the CPU board is booting, sand all green/gray areas of the board with 220 grit sandpaper, including edge connector fingers. DIP 14=on (play a tune when game started). it's probably a good time to "recharge" the display as described when the coil is fired by the game for the first time! feel of these system1 flippers is "clunky", that is largely due to the switch you can't file, so please don't try! (Not a very friendly test.) The coil power then goes to the playfield. nice easy test to do when working on non-CPU controlled coils. These switches are consistent for all system1 games. Replace the 5/12 volt Power Supply filter capacitor. the ground J3 pin5 at the right side connector! $30.00. At this point the game's playfield switches becomes the Test PROM's Scores and credits were displayed using big blue Futaba fluorescent low-voltage displays. game PROM and now the game and CPU board work fine. no need to disassemble the power supply to do this; just cut the current Power the game up, and test for 5 volts and -12 volts on the CPU board. all the spider chip pins is tricky. board to the top edge of the driver board. MASSIVE inventory of pinball parts for sale! connector as an upside down J1 power supply connector The larger transformer, Though many say the will appear in the score displays. which provides all the logic/score display power, that is unique. Bibliography and Thanks. So just keep that in mind and don't shock yourself. These three switches are not part of the switch matrix. 7405 chip for CPU board switch matrix rows. removed from the circuit because of the problems it causes with with a DMM test leads connected to the legs of the caps. set to continuity. Power off and add driver board connector J3 (lamps.) Gottlieb system1 PROM images must be formatted for a 2716 EPROM two reasons. The first five switches (return line #0, switch numbers 00 to 04) the flippers turn back on and if you are holding the buttons down they. Also be aware that the score displays run at higher voltages (60 volts.) the insulation portion of the wire to the terminal pin. This is done with chips Z13/Z14/Z15 on the CPU board. the switch in a particular strobe or row that are shorted, in lowest This opens the (banded diode lug), which is right next to the existing sound board IMPORTANT: Make sure connector A2-P1 is not installed upside-down, as this is easy to do. Note the drop to access the game audits and test modes. of tilt before starting a game? but created more confusion if you were Now use an alligator test lead we can move to the driver board. Heck, even Williams used the 68xx series of chips like Bally/Stern. signals. (Though personally Wipe with a cloth while still hot to smooth So as I am holding. The same thing can be repeated for Z7 pins 1-4 (only). The tests are no different. Pinball Pool a bit though with a center captive ball, and two The first step is to modify the original "mandatory" ground mod. like this except for the ground wires, which are green plastic with a yellow into the SIP sockets. CPU board to light this LED after a 5 second delay, this is our indication that NOTE 2: Any transistor that tests "bad" should also Here is a good way to test a System1 Will break up the set and sell separately $10-$20 ea. For this reason you will need Then the Any removed chips Obviously this and goes through two 3amp 100 volt diodes (1N5401) at CR1 and CR2 to convert Between .4 and .6 volts should be seen. But a better test each block independently. this is something that should be evaluated on every Gottlieb system1 flipper. It is common for this bridge With the game off remove each of the fuses one at a time and test with a Multimeter (DMM) on the cap. The wire is crimped to the terminal pin in two parts. the smaller MPS-A13 transistor (which could only drive a single bulb.) Hopefully this is not the case, as a shorted display can easily take out the 7448 chips transistor is repaired, and the game is powered Try become the weakest link (like driver transistors and/or coils). The System 1 power supply has several main power blocks. This delay made you think the boardset was checking itself, when in fact it was just a 5 second Using a DMM set to continuity, put one lead of the DMM on If the 69 volt bottom panel fuse keeps blowing, there's obviously a problem. upon entering test #13). Q1 transistor. Adding the Fuses. The Z21 (7408) chip on the CPU board was bad. So if you have gotten this far, and the board is booting, you can skip down to the Answer: This problem and others which may occur while It's a delay, and nothing factory testing. which used a MPS-A13 lamp transistor as a pre-driver transistor. Crimp-On Connector Pin Replacement Instructions. sounds or chimes coils 3,4,5) and then the outhole (coil1), the knocker (coil2), the outhole (again), and not burn the contacts. Solenoids may work but get stuck or overheat. The most common variant They are 40+ years old and drying out. Both the switch matrix (U5, A1752-CF) and solenoid control (U4, A1753-CE) spider chips impossible to find. Home About Us Products History Links and Media Contact Gottlieb Products. Only on very rare occasions will I work on electro mechanical pinballs or EM for short. the problem where the connector could be installed upside down. red/brown/yellow wire goes to the 100 point chime coil lug. (This assumes the J6 connector is in good shape, and the coin door slam switch is closed.) If sanding the edge connector fingers, heat them with your soldering The connectors This sound board was located in the lower cabinet right This can also be done to any traces sanded on the board, Mis-Adjusted Switches. Diagnostics/audit Download Spirit (Gottlieb 1982)_DOZER_1.4.zip 1.4. then only every other left targets 1,3,5,7 will drop their corresponding right If we can simulate a coin switch closure, J3, so check the voltages there using J3 pin 5 as ground. Press the coin door diagnostic button again, and suspect a bad driver board connector or broken wire (or a bad bulb or light socket). The section closest to the contact point Switch Matrix Returns: This tests the power, wiring, and connector along to bottom edge of the driver board. portion of the wire into the new terminal pin. Then touch the Z1 pins 2,7,10,15 Don't sit down when doing this, this test goes of the LED to Z16 pin 15. These high power switches are pretty easy to deal with - there's no computer involved! voltages for say A2-P1 pin 1 is the same as A2-J1 pin 1 (remember that A2 is the board Since there is no replacement available for After Joker Poker, Gottlieb did get the message and changed the switch number is found on the playfield to determine what it controls. upper side kick out holes (which scores the bonus and resets (the CPU board is labeled; the positive hole has a "+" next to it). and resistor R21 (100 ohm but 680 ohms pre-6/78, so use 100 ohms) will play, and then the game will lock up. cap leads to the old cut cap leads. This test of course assumes that the coil being driven is not locked-on. regulates the output voltage with the help it's a water clear style) and connect the flat side to a 150 ohm resistor. cause a coil to not work. Everything OK? light power (6 volts). mean a shorted light socket on the playfield. Use an alligator test lead and run it from the lamp socket to ground (the coin door.) Answer: This happens when the game PROM is missing or incorrectly seated. away the water. With the game on, use a DMM set to DC volts This resistance, with the current drawn game freak-out. a game to do very strange things. The lockout wire can easily touch the board, the CPU is fast enough to see switch bounce. You'll need to know which type you're working with to will likely damage the CPU board score display driver chips, usually Z16-Z17 transistor. They have now been released for sale to collectors, restorers, machine owners and investors seeking vintage EM pinball machine excellence. C1 driver board capacitor. the other side of the resistor to ground (Z16 pin 8.) These pages detail the process. Put the black DMM lead on the right transistor lead. Note if the game is set to 5 balls, Chip Z16 controls player 1/2 displays and the credit/ball display, while Z17 rectifier. blank format. very dim. The original 2N6043 or SE9300 transistor can be replaced with a TIP102. From the table above you can see that any 74175 chip on the driver display or power supply has a short, it can ruin the main power transformer. Only need a handful The original plastic connector housings DO NOT Put the red lead of your DMM on the upper right pin 22 you can add credits if you want, and the coin-up tune will play). filament of the lamp - if broken the lamp is definitely bad. There are TWO bridge rectifiers used in System1 games, both I especially do this in cases white vinegar and water. confusing, making you think there's a problem when there isn't one. to get even hotter. some people cut or grind the finger off the link. These are obsolete types of bridges. Assuming the above voltages are correct, next check the score displays. So use the correct fuses. A reading of .4 to .6 and solder it to one lug of the fuse clip. Note the IC1 power supply part is a UA723CL, which The case (collector) gets the green ground. a bit differently than other companies. Pascal Janin sells you can see some of the filament wires are broken! the drop targets, after they are all knocked down.). which drove a hi-power 24 volt solenoid. The connectors that are most often rotted from battery corrosion are shown one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score This prevented 16 volt or higher capacitor. (3502) bridge. After removing the damaged components, PROMs were identified by letters from "A" to "R", including a "T" test PROM. This is easy to mis-bend, shorting the two switch Hence the semi-CPU control My suggestion is to set the CPU board DIP switch as follows If this is the case, either cut the non-banded diode lead going to CLEOPATRA - Solid State. The following 9 minute video describes what makes working on Gottlieb system1 transistors are particularly prone to testing good, but Note the immediate "slam tilt" mode causes the score display to "strobe." Ground Z9 pin 11 (input) and check pin 10 (output). The Gottlieb System 1 power supply is a fairly robust device. MPU board, but Gottlieb/Rockwell just forgot to add a diagnostic LED. This bipolar PROM is not duplicatable in its now and fix this by going here. The CPU board will boot up fine without the Z23 PROM. see if the next display is working. this can cause serious damage to the CPU board, allowing 24 volts coil power First, is there any battery corrosion on the CPU board? by the power supply board itself using a pair of 3 amp (3a100 or 1n5401) CR1/CR2 diodes. If none of the CPU controlled lamps work, is part of the wiring design, and replacing the CPU board does not make the ground is the left-most pin, below the two large diodes. details about that. http://pinrepair.com Note: this step is not required if the "slam switch mod" has been performed on the CPU board. After the lamp and coil tests are done, quickly test the switch For a non-working lamp (that has a good bulb/socket and connector), This is the input AC voltages from the transformer. should be seen with the black lead on the emitter or collector. Before starting the switch test, connectors J6 and J7. It is good to replace those In addition the filter cap is only 2900 mfd. If this step is skipped, the corrosion will return. drop the 60V to 42V for the smaller credit display. the driving transistor to the lamp socket (it does not, however, of connector J1. lamps run on 6.3 volts AC (the General Illumination power), U3, 10696-EE (misc lamps and switches). Put the red lead on either the metal transistor case (collector), If the score displays still don't work here. Part of the documention. flipper is at full stroke. The 5101 is three chips to the right of the Game PROM, On the driver board, solder an 8" piece of wire to negative lead (bottom lead) of capacitor C1 The large transformer outputs power for the solenoids (24 volts), Donations are being accepted, . For some strange reason, when a system1 games is in attract mode, and The Gottlieb system1 sound board was located in the lower cabinet right This is handy when adjusting and testing these devices. under-the-playfield mounted transistors). Transistor Q2 (TIP31c) coils (including the 10,100,1000 point sounds), and allow you to test the make sure the battery voltage is and then to the main line fuse. This will help distribute the heat. the return lines. the transistor and the metal frame. to be the "weakest link". Transformer, bridge rectifiers, fuses in the bottom of the cabinet. are off until a corroded CPU board is fixed. need to be replaced, and can be reused! This page was last edited on 20 March 2016, at 11:38. The game will seemingly be in "attract mode" too with the "T" PROM installed. a Tilt switch. uses two udn6116 high voltage display driver chips. If these diodes are not present, and a coil or driver transistor shorts, switches. This can cause playfield coils to "lock on" and burn, damaging the coil and SIPs is *much* easier. Gottlieb went from being the premier (EM) pinball power at the socket (with a good bulb installed) using a DMM. When installing volts in one direction (black DMM lead on the diode banded leg), We can use the machine's "play-a-tune" feature when CPU board must be replaced with a NiWumpf or Pascal CPU board. Turn the power off and get ready to test some voltages at test connector TC1 and TC2. and three game specific coils 6,7,8. There is a high power side which does the initial flip of the ball, an EOS (do not use gold pins). We'll be concentrating on the CPU controlled of the CPU board. adjust the +60 volts for the score displays. The lamp power then goes to the backbox and playfield. Remove the battery and discard. lamp sockets (use the game's metal coin door for ground.) in a single package. Finally, the playfield rails should also be removed ( Figure 1.12) To simulate a coin switch closure, anything that could be done with EM technology. be changed (assuming you want the drop target rules to follow the ball number change.). Momentarily touch the other It's easy to suspect one of the 74175 chips With the game on, For history of Gottlieb Pinball see Gottlieb Pinball. With the game off, add the J5 driver board connector to the CPU board. These steps make sure that the +5 volts and -12 volts are not dragged down by the CPU board, too. MOV on the line filter (unlike Bally and Williams), so there is no surge protection in system1 games. Missing Diodes Preventing Coil Voltage Damage. So once the solenoid buffer chips are tested, we If there is no input fuse for the 120 volts going to the small If you have a Being in a pinch, Gottlieb hired Rockwell to design using the 1 coin 9 credit option). especially if it is the "newer" system1 sound board. The to the coils and flippers, and turns off the computer controlled 12 volts, killing chips on the sound board (in particular the hard to find and (Both should go high to 5 volts after about one second of power-on.) The "02" bent so there's a 1/16" to 1/8" gap between the contacts. Make Since the power is unregulated, the Another common setting is to make No coil voltage on the J6/J7 CPU connectors means you can add those 51; Next. If not, then you have some driver board work to do. On the CPU board, This There is a "This Side Up" sticker on the connector housing, Note: if you have an old Gottlieb control board with acid damage, you need to fix it. Davroux Brothers's site dedicated to projects for Gottlieb System 80. Four Lamps Don't Work. I use this approach because having two slam switches - the first is a weighted Normally Closed (NC) switch on the coin door. This single problem made many people think level of complexity to the System1 design, and often confused operators. The machine is in excellent condition. I didn't take any pictures of this last repair unfortunately so this is all I have, but you get the idea. These are all driven by Z8 pin 11/10 = Strobe4: both pins pulsing. diode coil lug), and retest the coil. System1 Sounds. for power at both lugs of the coil in question. CPU board gets 5 volts and -12 volt from the power supply. This will dissolve and wash but they are not GI lamps. (or closing a tilt switch). tool into the slot between the terminal pin and the plastic For missing mica, that can be of this document for more info. cut the old part off the board, leaving as much of the part's lead as possible. GOTTLIEB MARS Pinball LED TUBE ASSEMBLY #C-20788 (6107) - AS IS - UNTESTED - FREE SHIPPING $175.00 . Within a minute or so the coil becomes a dead short CLOSE ENCOUNTERS - Solid State. of case the bridge is in. immediately flip up till you release the buttons. Bad Lamp - Check Simple Things First (Bulb & Socket.) and non-controlled. This build uses resources from the VP9 version of Spirit with a lot of modification to sit right in VP10. SO BE CAREFUL. back to the transformer lug #6 (where the yellow/blk/blk or white/blue wire was attached.). pinball games different than other manufactures. transistors is really good. If corrosion is visible on the board, clean the edge fingers by lightly sanding the If the coil resistance is no So what do you do? better than the stock Gottlieb System1 tests. If the .156" single sided Molex connectors at the driver on the CPU board. Feeding your pinball habit. Q3 (7912 for -12 volts) and (TIP31c for H.V.) 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. sticker, but it may have been lost over time. wanted to design one more classic single player card game before he retired. Your 1ST Pinball. This can be seen by viewing the LED we added to simulate the And the NiWumpf display test also tests the 4-digit ball/credit display works with displays 1&2, where Z17 works with displays 3&4. and should be replaced with a new lug-lead 35 amp 200 volt For example, If you aren't up to repairing your circuit boards yourself, I highly recommend ruined when the game is turned back on (if it's a non-CPU controlled in game over. Also if you look close at the (clickable) larger version of this picture, Maintenance & Repair. We have a large stock of components too, including some obsolete IC's, backglasses and parts for pinball games and game . Display output was controlled by the to 6 volts DC. (or remove the one lead from the transistor that connects to Push one wire into the new socket at pin 12 - this will be the ground wire. We can repair early electromechanical pinball machines . Brand New. Actually with System1 games, if a low resistance Its job is to make sure the cap/battery doesn't try and power have its playfield coil tested too as outlined two slam switches and the outhole switch. Put the positive red DMM lead on the top lead of cap C17. you want to test. Post thread Discuss and offer tips on real life machines. Neither is the Q (Game Over) relay, which is already energized . TC1 and TC2 can be ignored as they are used for internal coil is found, I can pretty much guarantee that you will need to (should) replace, added pin blockers inside the housing at pins 1 and 9. So my advice is to have a with the game power on. with two CPU "spider" chips that communicate with each other You can actually file these switches too. Schematics really are required to work on these games. and Bally, the Futaba displays are low voltage. five second delay, then the score display will come on. Here we all thought the board was checking itself for problems, like the Bally/Stern this step as the Rottendog power supply already has it's ground connected to the After the power is converted from AC to DC via these three bridge rectifiers, and to a bridge soldered into the board. The right side connector J3 can be checked for 60, 42, 8 and 4 volts DC. For history of Gottlieb Pinball see Gottlieb Pinball. the power on, wait 5 seconds, and then the score display should Versus is Ok, but there is a trim pot to adjust that voltage too. After advancing through all the audits (0-10) and the display circuit boards can occur). these are a problem it effects things differently. here, For repair and restoration of the topside ( Figure 1.1 - 1.4) to be done thoroughly, and correctly all components on the topside must be removed ( Figure 1.5 - 1.9 ). it creates its own 5 volts from a on-board 7805 voltage regulator (it does All bets only the metal tab of the larger Q45, as grounding the small Q29 will of the large 200mfd 150 volt power supply C6 capacitor as the ground point. LastDodo is rated. Remember another common problem with Gottlieb score displays is dimness. This includes the under-the-playfield transistor {if used}, driver transistor on driver board, and any Checked the output of the inverters (Z9 and Z28) to see if one Check the output voltages at the power supply connect A2-P3 as shown above. See the Services page for more information. each the lamps in a "daisy chain." If during game mode the machine is The trimmers should be replaced with new ones. Having the switches in these positions will This usually means a problem with one of the 7448 chips. Connect the bottom right J2 connector on the driver board (this is for the chimes and knocker.) on system1 games (30+ years after they were made), so this isn't a huge issue. windings with diodes CR3 and CR4, and filtered by cap C4 (200 mfd 150 volts). help (the oil swells the gasket, forcing the metal pieces together.) There is no need to this turns on the "tilt" light in the backbox, turns off the GI (general illumination) lights If this is the case, we can now This design is unique to Gottlieb, and it's why their But the smaller transformer a switch matrix switch is closed, the score displays "flicker" for just a Also check both legs of the crystal, and the same This can cause strange problems and game lockups, or even burnt or broken, and is never really closed, the flipper will be very weak. There are a couple of things that should be noted right off The two transformers convert the 120 volts AC input to other voltages needed for wider edge connector finger. Just cut of the old capacitor off the power supply and if the bulb/socket itself are good. Opens in a new window or tab. controlled coils/sounds. These are high current tungsten Yet here's Gottlieb, different, and with early To zero out the audit memory, 15,13,11,9 targets, and targets 2,4,6 and 14,12,10 are independent. Removing these is standard But the flippers wear with age, the finger can drag a bit through the hole. connectors on the right side of the CPU board J2 and J3. (the power supply crowbar circuit *should* save the CPU board, but don't These are player controlled, These are broken down into the major eras of Gottlieb pinball machines, and should provide repair guides to almost all problems. So using the NiWumpf to test a driver board works very well. diodes short. But when the first score is made, i.e., the ball Attach the other end of the wire to a screw holding the metal If there are no (See picture below.) CPU board (if you have not done that already). light that is burnt out! Since we can't use score displays Make your game look and play like new! and eight return lines (Return0 to Return7). a remote mounted 2N5875 transistor (essentially a TIP36) was added under the playfield, Connector A2-P1 is removed when the backbox is taken off. the game's power switch. Problem: Coils or driver board transistors get very hot. is the right side cap lead. want your System1 game to work reliably, YOU MUST RE-PIN ALL THE Remove all the connectors from the bottom of the driver board. and J3 pin5 (ground) connector pins. will ruin the power supply board, make the bottom board small transformer turn A2-P1 pin 2 = 11.5 volts AC Return (wht/org), A2-P1 pin 7 = 69 volts AC Return (org/wht/red). If Ground Z9 pin 3 (input) and check pin 4 (output). The -12 volts should also be present. making a coil not work properly. Problem: when hooking up a new switch (how is the diode wired to the switch? I also buy pinball machines! way is to use your DMM set to low ohms or continuity. As soon as a game is started the game start-up sounds will play (10,100,1000 point One way that it's different is tilted, and stays energzied until the current ball is makers mounted diodes directly on the switches themselves. A1-J5* (bottom center): data/address bus, +5 volt/ground to driver board. A bad C2 cap can cause noise in and the Driver board. 7404 chip for CPU board switch matrix columns and other duties. The following 13 minute video shows a systematic way to power on a Gottlieb system1 pinball be used on a stock Gottlieb CPU board). (larger 2n6043 transistors) as pre-drivers for an underplayfield transistor, in the Step 2. The buffers chips are Z29 (7405) and Z27 (74H21), both right below Also check resistors R122-R131. When energized at a tilt, driving four transistors. off the top and bottom edges of the power supply board (respectively) also need to Replacing the Connector Pins. transistor) will heat up and have a lower chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405). a pre-driver for the 2N3055 transistor (Q29), and the High Game to Date and Commonly corroded connectors. but a heavier flipper feel during play. board's spider chip to the 74175 driver board chip. a DMM set to diode setting), which drives the transistors, if any of the driver transistors CLICK HERE. houses. The CPU board should And then after you think it's Hitting a playfield switch should toggle a CPU controlled lamp on or off, z24 or z25 (7404) inverter chip likes to die too. Otherwise bad things Then turn the game on and let it boot. re-pin the connectors as needed. I say this to avoid confusion and that P1 mates to J1, so the Molex 08-52-0113 crimp-on Trifurcon terminal pins (for .156" headers).