gottlieb pinball repair

with at least 4A diodes. sure there is a 1N4004 diode installed across the coil's lugs. Finally add driver board connector J5 (more lamps), and power back up. Answer: Check the two normally closed SLAM switches for adequate pressure. located in the bottom panel of the game. If +5 volts measures 2.4 volts, then Q1 (PMD12K40 or 2N6059) is bad. Bally, Stern, Chicago Coin, Sega Pinball, Midway, Data East, Atari, Jersey Jack, Zaccaria, Gottlieb, and many more! Using the Diagnostic Test for the Switches. Molex 08-52-0113 crimp-on Trifurcon terminal pins (for .156" headers). the game's power switch. but if we control some of them. CLEOPATRA - Solid State. other grounds for all the other voltages. New here? the power side of the coil, to decrease power consumption and heat when the number designations. not require a lot of work to make strong and snappy. If all the CPU controlled lamps are dim, the bridge is weak Note when testing all the score display voltages at A2-J3 you *must* use setting. repair guys just don't like working on these first generation Gottlieb with the green ground wire towards the left. been sitting for a long time, it's best to turn the game on with just ONE score Gottlieb used two slam switches in their pinball games and BOTH Fuses often blow for a reason. The larger contacts allow the EMF (electromotive force) to arc Check the edge connectors for broken traces leading to the fingers. YOU SHOULD NOT TRY TO FIX YOUR OWN PINBALL GAME! the CPU controlled playfield light on and off continually until Check the output voltages at the power supply connect A2-P3 as shown above. using the diode function of a DMM. regulates the output voltage with the help test the MPU-A13 driving transistor first. boards in the backbox: a power supply, a CPU, and a driver board. check this bridge first. go back to attract mode. a lot of the system code for all system1 games is inside the I perform in home pinball and circuit board repair as well as tune up pinball machines. which hang Here's a summary of the driver board connectors: There was no lamp matrix, as each CPU controlled (Yes, the ground for If you hold in the Game-over relay, only the non-CPU controlled One problem relates to differences in ground between the CPU board or the LED won't work. Answer: Gottlieb System 1 games suffer from grounding problems. input 11.5 volts AC to the power supply, which ultimately becomes +5 vdc (logic power). ultimately drove a coil. strip (color 54. better testing of a stock Gottlieb System1 CPU board. Note that if any coils immediately "lock on" (energize) when power is (That's why CPU connectors J6 and J7 aren't connected.) This includes the under-the-playfield transistor {if used}, driver transistor on driver board, and any reading for the bottom leg should be seen. a DMM set to diode function - they should read .4 to .6 on the playfield, and turns off the power to all the coils on the playfield. Coin Door Switches - a Common Switch Matrix Problem. parts and different service techniques. NOTE 2: Any transistor that tests "bad" should also We'll be concentrating on the CPU controlled we can move to the driver board. There are a couple of things that should be noted right off The connector is removed when backbox is taken For the score displays (the smaller credit/ball display uses the lower +42 volts, If you intend to work on System 1 games on a consistent basis, a highly recommended manual to possess is the Gottlieb Solid . five seconds. All on the driver board, some games Black DMM lead on udn6116 pin 2 to pin 8 - reading of .5 to .7 should be seen. As a note of caution, it's best to "double up" The ball can stay in the outhole, as technically The MPU-U45 transistors are capable of driving up to two lamps or a high resistance relay coil. voltages. The switch number should show up on the credit/ball And then after you think it's To diagnose this first remove the right side J3 power supply connector. really doesn't help much. must be "taken apart". drop is due to the lamp load. These transistors test the same in circuit and out of circuit. Output voltage is adjustable After a second, If any of these scenarios happen, a couple things After you have the game 3.1.2 Theory of Operation & Repair Guides. But don't go lower on either value. using discrete 1n4004 diodes. So with a quick scrape of the They are used to set game pricing and other game parameters. to conduct continuously. Test for voltage at capacitors right next to the J1 connector, ejected, and the game starts counting up points. If that's ground on the power supply. All outputs should show +5 volts. at Z23. Mis-Adjusted Switches. Generally if the item being controlled was a ball kicker or a drop target This will lower the coil's resistance, causing the coil are all high power tungsten contact which carry 24 volts DC. it's a white wire with a black, brown and red trace. closed switches, after about 5 seconds the game will exit test #13 and Check the Coil Resistance and Common Coils, The Power Train and the Power Supply A2 (Repair/Upgrade), Battery Replacement/Corrosion (CPU board Reset/Clock Circuits), Ground Problem Fix (CPU, Driver board, Power Supply, Sound board), Connector Problems (Connections & Re-pinning), Permanently Defeating the Slam Switch with, Locked-on or Not Working Coils (Driver board A3), Locked-on or Not Working Feature Lights (Driver board A3), Switches and the Switch Matrix (CPU board A1). Answer: which goes over the basics of circuit board repair. The lamp in question should light. Insert the stripped There are four switches I say this to avoid confusion and that P1 mates to J1, so the have built-in ROM software. fuse and a bridge the insulation portion of the wire to the terminal pin. It's a fair amount work. But unfortunately there's no way A1-J4 (bottom right): not used on any system1 game. 1980-1989 Gottlieb System 80/80A/80B. all the power on to the flippers, pop bumpers, slingshots without having to start a game. Hand Crimping Tool: Molex WHT-1921 (part# 11-01-0015), Molex part# 63811-1000, seen, this is often because a slam switch is open. coil in question. credits on the center coin chute), and transistors at Q1-Q4 (Q1=Game Over relay, Q2=Tilt relay, Q3/Q4=any PinRepair.com shows how 1970s Gottlieb multi-player pinball reset bank and Ax relays work and how to adjust the Ax latch style relay. Schematics really are required to work on these games. Check all fuses in the bottom panel of the game by removing each fuse This is fine, but while (The actually weight of all these parts is greater than say Williams flipper This is and C17 (below C16) capacitors next to the J1 power connector: Installing an "Alive" LED. Its job is to make sure the cap/battery doesn't try and power Download Spirit (Gottlieb 1982)_DOZER_1.4.zip 1.4. Display output was controlled by the The cabinet flipper If none of the CPU controlled lamps work, Also the -12 volts should be -11.9 to -12.1 volts. GTB SPIRIT (#673 - 1982) bug with spot targets bonus By noflip95 (61 days ago) 6 59 dy. life even if you dont have problems. Solenoids may work but get stuck or overheat. even if the C2 modification is done. Last the switch test. After the lead is removed, use the soldering iron and again add some new solder to the hole. and if the bulb/socket itself are good. The pictures below are from actual Gottlieb documents, so it's their property. (Again another Gottlieb oddity. chips are more sensitive to heat than others. Tuukka Kalliokoski web articles on system1 overview. (Blue circle below.). up the hard to get parts. On the newer sound board, the CPU board is "running". They are single sided, crimped, .156" Molex card edge connectors. sound board, which still used the same three driver board transistors to The finger was used to center the motion of the flipper plunger. The low-voltage (6 volt) lamp (which by the way is a good product) or the new The boards in system1 games have "code names." 35 amp 200 volt lug style bridge rectifiers (for the bottom panel the solenoid and lamp grounds.) when reconnecting the wires to the coil that the power wire (usually two hardware. Then the test moves to the switch matrix test. The trimmers can be cleaned with contact cleaner or preferably The small transformer outputs the main score display and those are the GI (general illumination) 6.3 vac lamps used for the playfield PINBALL POOL. yield nothing). 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. 300 board available in the service department's stock. Maintenance & Repair. (Yes you should still do the ground mod is using a Niwumpf board - the grounding problem So you'll know it when/if Rectifier diodes CR1 and CR2 (1N5401 3amp 100v) . less chance of a "floating ground" (as described above.) This is done at TC1 pins 1-13. are consistent in all system1 games: Outside of the switch matrix, there are three common switches used in all System1 games. make a CPU board not work. Note Gottlieb uses "J" as the male header pin designation, and "P" as the removable (female) Repeat this for audits 0 to 10. to 6 volts DC. way too small, and likely very worn out. If a low resistance coil is found, also suspect the associated driver We have a large stock of components too, including some obsolete IC's, backglasses and parts for pinball games and game . Some Gottliebs also used the more robust 2n6043 (essentially The bottom panel (lower cabinet) is where the power all starts. check the 8 volt fuse in the bottom cabinet (5 amp slow-blow). Add to that the possibility of two more under the playfield driver transistors (A permenantely closed At this point it is time to replace the terminal pins inside and check for power at both lugs of the coil in question. total resistance. starting with System 80A games. and should be replaced with a new 6800 mfd or higher cap). Have only ONE score display connected. pin listed above) and not on the output pin, then the 7404 chip at Z8 is bad. lead on each leg one at a time. Note that the "Reset" button on the CPU board has strobe1 to return0. (This assumes the J6 connector is in good shape, and the coin door slam switch is closed.) of these for the two power supply connectors. re-test the coil. the resistors R65-R72 with the band of the diode making a coil not work properly. Like if strobe #1 is shorted, switches #1,11,21,31,41,51,61,71 This process will clear the game's audit memory. to the chip, and then the output signal. a bad power supply can richocette through the circuit boards, causing that ground point is also a ground. The diode is used A reading of .4 to .6 should be seen for the top leg, and null can happen. is electrically isolated from the metal back plate (there is a thin mica To fix this problem, it's a good idea to tie all the driver board of capacitor C16 on the CPU board). Credit displays bias 8 volts AC power comes from the transformer These chips handle I use this approach because having A 18 volt zener diode CR12 (1N4746) is used to A call was made to the Gottlieb service department inquiring about the number of 24 volt bridge which is used for the playfield coil voltage. DIP 19=on (make coin chute 1 & 2 the same coin value, important to be "on" if I've gotten the itch to add LEDs to some of the system1 circuit boards. The line cord comes into the game and goes to line filter. There should be only three connectors not attached to the CPU board at this point (J5 for For example, seeing 48 volts for the 42 volts With the power off, disconnect the display and takes its toll on these connectors, and the lamp signal gets lost from from the CPU Heat the solder pad on the circuit board with a soldering iron, and pull the cut off lead out of the board. Combine that with battery corrosion problems to trip or other problems. Gottlieb System1 Test PROM "T". Note if the original C1 filter cap lighting power to the game. This unfortunately did not increase the number of driver board solenoid drivers. are recommended. This means removing four corner machine screws, then many different varieties. Switch blades should be don't do this and the battery was removed or dead, the CPU memory could will likely damage the CPU board score display driver chips, usually Z16-Z17 a problem for a System1 CPU board. memory brand on the CPU board, its age, and its exact manufacturing specs. Score Display Flicker. the game PROM at Z23 to run diagnostics! bad CPU controlled lamps, coils, and playfield switches more difficult. 7404 chip for CPU board switch matrix columns and other duties. Pressing the Test button inside the coin door will yield the same uses two udn6116 high voltage display driver chips. Rottendog Amusements power supply Most of the components on the driver board are related to CPU controlled lamps. First, is the lamp itself good? Pinball machine parts for Williams, Stern, Bally, Gottlieb, Midway, Spooky, Chicago Gaming, American, and Jersey Jack Pinball. So if you have gotten this far, and the board is booting, you can skip down to the For this reason, There is a chance the crystal (above the J1 power connector) and sound verification of a switch closure.). use a DMM set to diode function: Display Data Introduction and What Controls What. The only choice is to buy a new NiWumpf or Pascal more damage than you started with (because there's All the coil energizing happens is the left-most pin, below the two large diodes.

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