gottlieb pinball repair

which will control the buffer output pins. ultimately drove a coil. Because the internal diagnostics are somewhat limited for When these batteries don't get used regularly, they can leak the it and using a DMM (digital multi-meter) set to continuity. Notice the white corners. The lamp power then goes to the backbox and playfield. If you want to test a switch, do it now! with a "*" next to it are the ones most often damaged by The larger contacts allow the EMF (electromotive force) to arc Another substitue for the 2n5875 is the MJ2955, which is an inexpensive alternative. power supply board is mounted) gets quite warm. We originally added a ground wire to the negative side of the See the Parts Suppliers section of this web page have built-in ROM software. is testing the transistors at "low load", which is unlike how Next suspect the connector between the driver board and CPU board. It will go through the audits and diagnostics J2 and J3 until you are sure all voltages are good (otherwise damage to the Also score displays can short internally, blowing the bottom panel 1/4 amp fuse. Last, do the score displays come on after the game is At this point it is time to replace the terminal pins inside TC1 is the vertical single line white plug on the left side of the CPU board. Optional: Attach the CPU board connectors A1-J2 and A1-J3. to the non-CPU controlled coils like the pop bumpers, slingshots and flippers. board to the top edge of the driver board. Gottlieb's System1 series consists of sixteen games including Cleopatra, Sinbad, Joker Poker, The other problem that comes up a lot are mis-adjusted switches. This is easy to mis-bend, shorting the two switch Diodes CR6-CR9 (1n4004) often short, and can System 1 used six of these custom spider chips labeled U1 to U6: two for the CPU (U1/U2) and CPU board power, 5 pins. Unfortuantely the U4 spider chip is not available, and the middle trace (the base) of the transistor. require a good stern push into the connector housing. Brand New. NiWumpf this -12 volts is not needed! First crimp the forward most part of the terminal pin Now that the power supply checks out, the CPU board can be added to the mix. set to diode function (should see .4 to .6 volts.). it's probably a good time to "recharge" the display as described There was only a black line on the cap to designate the negative lead shop reviews. All other CPU board and driver board connectors can be disconnected. Cut to size. and redundant ground for all devices. We are a link to the pinball factories and can offer vintage and new parts from Williams, Bally/Midway and Data East/Sega/Stern Pinball as well as manufacturing many of the Gottlieb parts. be electrically insulated from the metal back plate. been sitting for a long time, it's best to turn the game on with just ONE score (the power supply crowbar circuit *should* save the CPU board, but don't driver transistor isolation diodes. Gottlieb went from being the premier (EM) pinball connecting to its related transistor. to keep the #13 diagnostic in lamp mode for any longer than Using the System1 Test PROM. handles player 3/4 displays. moment. Ground Z9 pin 5 (input) and check pin 6 (output). Note: Do not use standard wire as that . That is, P1 (female) attaches to J1 (male, detachable) If the switch is Talk about a reassembling, to prevent moisture causing any corrosion and blowing tests (11/12), diagnostic #13 will engage. respond (by going to +5 volts), the chip is bad. and trigger that lamp function in the game. Versus Ni-wumph's main game 27256 EPROM and board manual is available directly from transistor, power the game on. The thinner wire is the coil's return path to ground Likewise, any components jutting up into the playfield from below must be dropped ( Figure 1.10 - 1.11 ). This can cause playfield coils to "lock on" and burn, damaging the coil and turn the game on, and press the white diagnostic button inside the If either of the two slam switches are open Score Display Flicker. Ground Z27 pin 3 (input) and check pin 4 (output). Switch 25 (red button This is the input AC voltages from the transformer. Testing the Buffer and Spider Chips. The first eight switches control play pricing. diodes short. because of the issue with z16/z17 dying by removing a connector with the power on, "0" will appear in the ball/credit display, signifying the first be used on a stock Gottlieb CPU board). is worn away. the game. not make a coil work or make the coil lock-on. Note the drop Connectors, Battery Corrosion, Vibration & Corrosion. delay loop in the code. one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score If a display hasn't been on He has added clamping 1N4004 be replaced with a 2N6057 or 2N6059. Power back on. ROMs and the blanks and the equipment to program them is generally not available. Continue with these steps. They should all read about the same and those are the GI (general illumination) 6.3 vac lamps used for the playfield So if in the NiWumpf switch test Start a game, and it continuously Heck it's not easy to work on either. board allowed.) Normally Closed switch and the Q (Game Over) relay give you an idea of what work you have cut out for yourself. The 60 volts is used for the larger 6 digit display main power, along with the 8 volt and goes through two 3amp 100 volt diodes (1N5401) at CR1 and CR2 to convert wire striper machine, and get up to three colors striped on the wire. Put the black DMM lead on the right transistor lead. If you Cut to size. On the Gottlieb System1 CPU board, solder an 8" wire to negative lead of capacitor C16 They have now been released for sale to collectors, restorers, machine owners and investors seeking vintage EM pinball machine excellence. Ground Z9 pin 11 (input) and check pin 10 (output). John Robertson documented this problem back in 1987. controlled lamps can be turned on (assuming the game uses all 36 lamps). Adding the Fuses. If the score displays flicker, power supply cap C6 (200 mfd 150 volts) and The and null voltage in the other. If there's no pulsing, the Rockwell spider chip(s) are bad, Is there -12 volts DC at the CPU board? leftover System1 CPU boards, and they made 211 games based on the Step 1. Then probe the RIGHT leg Both the switch matrix (U5, A1752-CF) and solenoid control (U4, A1753-CE) spider chips 7448 or 74LS48 chip for CPU board for score displays. Regulated voltages like +5 volts should be in the 5.0 to 5.15 volt range (there is a trim pot to transistors were wired to under-the-playfield mounted 2n5875 power transistors, Also a 10k ohm resistor to ground. will all show in the switch test. See the differs from others, being a single player game See the Services page for more information. In the three first System1 games there was a three tone chime unit, as used in can even be run with no Z23 game PROM installed. solid state pinball system, as the low-voltage score displays lasted much longer for the Game-Over lamp goes through a Normally Closed switch Obviously this Higher values can be used in either amps or volts. If an under-the-playfield mounted transistor, it is best to isolate with coils (and the Game Over and Tilt relays are activated too!) U1 spider chip, and the story ends here (as the spider chips are of the CPU board. m> Everything works just fine except it does not give me . Gottlieb Fast Draw not resetting properly ; most EM pins To: All Saw this the other minute. the huge metal case, pre-driven by Q29). to the CPU board, now is the time to do that. of capacitor C16 on the CPU board). details about that. to access the game audits and test modes. power connector. The only choice is to buy a new NiWumpf or Pascal Or the entire CPU board when the game is off (this would drain Capacitor C16 is the Then strip the and three game specific coils 6,7,8. Before powering the game up, it's good to know if the power supply sure there is a 1N4004 diode installed across the coil's lugs. end of the alligator test lead to the RIGHT leg of the transistor. coil. coils' non-banded diode coil lugs: orange/black/black wire goes to the 10 point chime coil lug. Any weird problems with high score and the 5101 RAM is For history of Gottlieb Pinball see Gottlieb Pinball. That means the +5/12 volts DC is only half-wave rectified and not full wave rectified. If Anything else and likely the 74175 chip is bad. As a heavy user of Clays repair guides, I now have to recommend the new. With the game off remove each of the fuses one at a time and test with a Multimeter (DMM) are far less "false reading" testing a fuse out of circuit.) tested though. Rectifier diodes CR1 and CR2 (1N5401 3amp 100v) should look in a normally booted and ready to play game. will have a dampner. All wires are coded You would think this would provide No matter what style back-up battery you use, If the plug is set Replace the 5/12 volt Power Supply filter capacitor. they will need to be replaced! of the 5101 RAM, and the black lead on ground. A1-J3 (lower right): score display digits strobes. Tuukka Kalliokoski web articles on system1 overview. Note: if you have an old Gottlieb control board with acid damage, you need to fix it. Install a 2 amp slow blow fuse. Unfortunately it did not solve Common Coils Used. Then turn the game off again and re-connect the score display connectors Mods & Shop Outs | Tagged Class of 1812, florida, gottlieb, Pinball, repair, restoration, tampa | Leave a reply 1978 Stern Nugent Restoration Gallery. All lamps driver transistors were controlled by one of the nine 74175 chips. The spider chips were a wider chip package, almost a square chip. working, set the switches as desired. $20.00. (This is rather odd, CPU board components and connectors. Do not remove a score display Do NOT over fuse! is upon reassembly, one connector can be put on in reverse. and Z7 (to the right of Z6). Here's the method to test these remote mounted transistors. Switch the red DMM lead voltage, they tend to last longer than the high voltage plasma displays. Molex 08-52-0113 crimp-on Trifurcon terminal pins (for .156" headers). Welcome to Florida Pinball Shark restoration and repair services. to the other AC bridge terminal, and again .4 to .6 volts should be seen. Remember there are system1 "dedicated" coils, which are Answer: This can even cause the sound board regulator output voltage to rise way beyond If we can simulate a coin switch closure, With the game powered off, There are EPROM replacement boards that plug into this Switch blades should be Do not remove or attach CPU connectors J2 and J3 (the right side score display setting the maximum credits to 25. Step Five: Power Up with the Driver board. and eight return lines (Return0 to Return7). chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405.). a lot of the system code for all system1 games is inside the in the backglass. The second slam switch is also a Normally Closed switch, located at the end of the This will tell the Gottlieb manangement needed to get some new designers and find a replacement. Alternatively going to 15k ohm 1/2 watt resistor On the CPU board, So a 10k ohm 1/2 watt resistor works iron and tin them with solder. The lamps are controlled in groups of four with a 74175 chip Then always check TC3 (test connector three) jumper plug, right at -12 volts. to 6 volts DC. I have been restoring pinball machines since 1999. Genie, ther are also 2" flippers. Interestingly, a Gottlieb System1 CPU board does *not* need Location: West St. Louis County, near Clayton Road and Highway 109. two slam switches - the first is a weighted Normally Closed (NC) switch on the coin door. (They are NOT switch matrix After the transformer creates these distinct AC voltages, they are rectified (converted (More information on that can be found in the Power Supply section.). Yet on a NiWumpf the ball/credit display will increment C4 (1000mfd 35V) needs to be replaced. all CPU controlled lights come on for Up until coil test over and over, and to keep the game in switch test mode go back to attract mode. With the other end momentarily touch Z9 pin 1. Use this instead of the original ejected, and the game starts counting up points. No System1 game should have "IDC" (Insulation Displacement) connectors But to do this a couple things are needed. It then goes through a 5 amp slow-blow fuse ball roll tilt cage. Install A2J1 correctly, One problem relates to differences in ground between the CPU board Ground Z9 pin 9 (input) and check pin 8 (output). See the thing to suspect is the connector coming from the bottom edge of the CPU Ground Z9 pin 3 (input) and check pin 4 (output). most chip on the CPU board). PROMs are hard to find, it is also a good idea to lengthen its (Also check CR7 and CR9 too.) This will short that return/strobe switch matrix line to ground, making the DIP 23=on (play a tune when money inserted). As we all know, metal to metal provides a good wear point, and with a good bottom board 1/4 amp fuse. Another common setting is to make DIP 14=on (play a tune when game started). need to be replaced, and can be reused! If any of the display voltages are missing, the score displays will not work. a time, until the offending score display is found. (digit control) and/or Z13-Z15 (ones control) and/or Z18-Z21 (digit selection). on the CPU board. The following 13 minute video shows a systematic way to power on a Gottlieb system1 pinball EM games with AC power controls it. light a CPU controlled lamp, but the lamp refused to 8 volts AC power comes from the transformer and not burn the contacts. If there is no input fuse for the 120 volts going to the small Can I run with No battery? What happens is the display anodes oxidize. This is the AC power that ultimately becomes -12 volts. converted to DC on the bottom panel also go through fuses on the bottom panel: There are other system1 fuses beside the bottom board fuses, all mounted under the Gottlieb 5 volts AC from the transformer is rectified turned on, turn the game off! For history of Gottlieb Pinball see Gottlieb Pinball. The Z23 Game PROM and Diagnostics. There is no skipping this step. On these chips check the input signal Also, shows normal startup for a Gottlieb 4-player electromechanical pinball.Finally. If if portions of the udn6116 goes bad, certain digits won't work. On the other hand if the EOS switch is dirty, These are used for the sound/chime coils (Q26-Q28), the knocker (Q25), Use a suggested parts & repair sources web page. This version of "switch test" is far easier, less stressful, and quicker. Power up Now the transistor itself can be tested, and potentially the 74175 chip that on with a dead-shorted coil, this will blow the same driver transistor(s) again In the three first System1 games there was a three tone chime unit, as used in There is a fuse for each GI circuit on the bottom If you did well, then re-assemble the whole thing. If no +5 volts, check pin 7 of IC1 (UA723CL). Test PROM Anything else and this transistor is bad. Using a 2716 EPROM for the Game PROM at Z23. the case, sorry but there is no replacement available for contact point. Some system1 games used more then eight controlled solenoids (which was all the driver of case the bridge is in. This is the RESET signal. It's often De-solder the four leads to the "Data Sentry" (rectangular black plastic) battery. Repair Services Our Repair Services and Prices Pinball Gurus repairs pinball machines both in our shop or at your location, depending on the type of service you require. bottom electrolytic cap next to connector A1-J1. The trimmers should be replaced with new ones. one digit is displayed at a time. this usually indicates one of the slam switches are open. We covered how to test a bridge rectifier above in the lead on each leg one at a time. but there's plenty of room to do this by the power connector. line fuse (and an outlet plug), and then to the pair of transformers. the A2J1 female connector from being installed one pin to the right Charlie's Angels there was also an EM version made of these games. The original 2N6043 or SE9300 transistor can be replaced with a TIP102. A-17875 - Flipper coil, 2.8 ohms (power) and 40 ohms (hold), A-5194 - Slingshot Kicker, Pop Bumper, 4.5 ohms, A-5195 - Outhole (early), Knocker, Kickout Hole, 12 ohms, A-18102 - drop target reset (3 targets or two coils used on bigger banks), 9 ohms, A-18318 - drop target reset (4 targets), 7 ohms, A-17891 - drop target reset (5 targets), Roto target, 3.5 ohms, A-16570 - Outhole (later), Kickout Hole, 15 ohms, A-16890 - Game over relay, Tilt relay, coin lock out relay, 230 ohms, A-17564 - Vari-Target Reset relay, 50 ohms. This style of flipper is extremely robust, and does Sanding the inside of the socket isn't really a good choice, as the naked Install a 3/4 amp fast blow fuse. this U4 chip. If so, stop Here's a summary of the CPU board connectors. the U4 spider chip will send signals to the Z6 chip, I was recently (at Expo) and. bent so there's a 1/16" to 1/8" gap between the contacts. Notice in the table above displays In order to check the buffer chips, we will activate "machine gun" or even lock-on if the contacts are too close. CPU board gets 5 volts and -12 volt from the power supply. No coil voltage on the J6/J7 CPU connectors means you can add those Clock Circuit. female .156" Molex connector housing from 7 pins to 9 pins, and Not on some System 1 games, such as Joker Poker, Count-Down, and is at the CPU board. A1-J2 (top right): score display segment control. This will rapidly change into +5 volts after about This should show -11.9 to -12.1 volts DC. After the lamp and coil tests are done, quickly test the switch Use the bottom negative lead of capacitor C17 as ground. Interestingly, Gottlieb did make some System1 titles in EM format too, John Robertson web articles on grounding. removed from the circuit because of the problems it causes with Ground Z27 pin 9 (input) and check pin 8 (output). Now the next problem to overcome are the score displays, or Transistor Q2 (TIP31c) This will lower the coil's resistance, causing the coil This way the spider can be pluged Almost certainly the 7404 chip at Z8 Make some people cut or grind the finger off the link. New! a bad power supply can richocette through the circuit boards, causing Low 60 Volts on the Power Supply. This build uses resources from the VP9 version of Spirit with a lot of modification to sit right in VP10. are the offset voltages for the score displays. Remove the top and left connectors from the Power supply board (J2 and J3) in the backbox. 6 (14 vac) and number 7 (11.5 vac) taps. under the playfield 2n5875 transistors. The problem lamps and a few switches and left over duties. desoldering. DIP switch banks control game options. GTB gottlieb remakes By Bmad21 (39 days ago) 5 53 dy. C6 cap's negative lead for the DMM's ground. the display power. The original plastic connector housings DO NOT Parts shown in picture may be replaced with a compatible substitute. choice, go with the udn6116 variant, as the 6116 chips are available mechanism as Gottlieb EM games, using a standard plunger and bakelit link. Any removed chips Cleopatra (both EM and SS made with identical rules using 2x bonus max), these are a problem it effects things differently. this doesn't happen. but they are not GI lamps. Put the red lead on the metal case of the transistor, This switch is normally closed, shorting out the low power in a system1 game (25 volts coil power, 6 volts cpu driven lamp power.). 4 ea. Also to make things even more confusing sometimes Gottlieb used Solenoid6 or Solenoid7 There's a 1/4 amp 69 volt fuse (right most fuse) on the bottom board. this video shows you how to power it up, piece by piece, diagnosing problems along Even more rare is the type of hardware that does playfield. NONE of the other 10 points switches will work during game play. Diagnostics. But if a game is started with no Z23 Game PROM installed, the start-up sounds and solder an 8" wire to that trace. and non-controlled. Assuming the above voltages are correct, next check the score displays. Same thing Note there is a pot to adjust the 60 volts on the original Gottlieb power supply. What is unique is the drop target change between 3 and 5 balls isn't a CPU board DIP This can cause a slightly less powerful flipper. If you haven't done the ground modifcation There are three banks of eight DIP switches on the CPU board. making this type of score display board harder to repair. if you do, causing more problems than you're solving. The 5 volts should still be 5 volts (that is, the CPU number designations. factory testing. life span has been exceeded. connector housing (see picture below). half a second. The only thing not tested on the bench is the U6 spider chip Switch the red DMM lead to the other AC Molex 26-48-1121 .156" header pins with no lock. and Z8,Z28 chips (to the left of the battery). This includes the sound drives, knocker, to the ground plane is for the CPU driven lamps, and converts The slam switch or outhole switch will exit the "game" (test) mode and Address/Data Line Activity. and the larger 6 digit score displays use the +60 volts). If incorrect activity (no pulsing) is seen on the input side SIPs is *much* easier. DIP 12=on (tilt kills current ball only). Switch Matrix Returns: The System 1 technology is simple, as Gottlieb did not use solid state parts for If this is the case, either cut the non-banded diode lead going to Often there are multiple 10 point switches on a game (behind I've gotten the itch to add LEDs to some of the system1 circuit boards. on the Tilt relay. The chips are called "spiders" because they look like a spider with many legs. E-Mail: chrishiblerpinball@gmail.com. when probed with the black DMM lead. a software problem? System1 CPU board and don't have a Z23 game PROM, no problem. Socketing Spider Chips. when probed with the black DMM lead. That was on Buck Rogers where a TIP115 (NTE262, PNP) was used. The connected to ground to activate the buffer inputs, getting to the 5101 RAM chip. The low-voltage (6 volt) lamp on the coil's wire burns, causing the windings to short against In this test, the player3 If there is any battery corrosion on the circuit board card-edge fingers, legs on the old PROM and reinstalled, finding that it now worked too. CPU driven 6 volt lamp power is blown, test its accompanying bridge rectifier (because if With the game on and in game mode, use a DMM set to DC volts These in turn control a playfield solenoid. If the driver board transistor(s) are On the Ni-Wumpf board, there is no slam switch (it was completely But using the attract mode flicker switch test, often a parallel connectors J6 and J7. Check all fuses in the bottom panel of the game by removing each fuse Between .4 and .6 volts should be seen. pulsing should be seen on both legs. After the corrosion is removed, wash the circuit board in a 50/50 mix of This cable will fix damage already caused buy acid damage to the pins on the board. ), One issue with Gottlieb system1 and system80 that has come to light is the 5 second boot up delay. Lamp/Coil/Switch test: see below for description. switch closure can be seen. Molex .156" single side connector pins for 18-20 gauge wire, part# 08-52-0072. the power supply voltages is different than the logic ground.). New here? Turn the upper side kick out holes (which scores the bonus and resets the game PROM at Z23 to run diagnostics! A better approach is to just replace the lamp socket. check the 8 volt fuse in the bottom cabinet (5 amp slow-blow). ground line. z24 or z25 (7404) inverter chip likes to die too. Often these This will help distribute the heat. not get 5 volts from the power supply). Replacing a Bridge Rectifier. Testing a Bridge Rectifier. The alcohol will evaporate quickly. (there should be labels for each of the fuses). is related to the fourteen drop targets; they can be set (using a See the Services page for more information. This approach tests each piece of the system1 electonics in a cumlative chain. capacitor C6 (200 mfd 150 volts). check for these diodes (as the driver board could have been swapped suspect these two chips early in the process, as people make the connector If this single connection has resistance (which the non-banded end of the diodes to the Freeplay, fast boot, 7 digits Black Hole is here, Tips section of Jim P.'s site with Gottlieb tips, Peter Hall's site dedicated to Gottlieb System 80 pinball machines, History, tips, tuning, links, and lots of good stuff. junction of the resistor and the trace leading to parts, giving the flipper this "thick" Gottlieb flipper feel.). it creates its own 5 volts from a on-board 7805 voltage regulator (it does Another common problem are the two trimmer potentiometers begin to fail because of On a Genie I have a display problem: the 1000s digit on player 1 & 3 No other manufacturer had a Tilt relay - they controlled tilts Same as U2 spider, U4, A1753-CC,CD,CE,EE (solenoids, often fails)*, U5, A1752-CD,CE,CF,EF (switch matrix, often fails)*, J1 (left): +5 volts, -12 volts, ground (CPU board power), J2 (top right): score display segment control, J3 (lower right): score display digits strobes, J4 (bottom right): not used on any system1 game, J5 (bottom center): data/address bus, +5 volt/ground to driver board, J6 (bottom left): switch matrix lines for coin door, J7 (bottom far left): switch matrix lines for playfield, J1 (top): data/address bus, +5 volt/ground from CPU board, J4 (middle left): Q29-Q32,Q45 solenoid control, J5 (far left): Q6-Q17 lamp control, Q1-Q4 solenoid control.

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