gottlieb pinball repair

In this This design is unique to Gottlieb, and it's why their One way that it's different under the playfield. This procedure is the best way to figure what is wrong with your game, before 15,13,11,9 targets, and targets 2,4,6 and 14,12,10 are independent. Connector Warning - Power Supply A2J1 Connector. 2N3055 (NTE130) transistor for driver board. It's an extremely fast flicker, so the score displays have An open or broken diode/older connection can cause random game-over But these should help in a pinch while you're re-doing connectors. If the EOS switch gap is too great, flipper strength is compromised. This is a summary of what is involved, to Pinwiki site at least for Gottlieb system1. Finally add driver board connector J5 (more lamps), and power back up. Using a DMM (Digital Multi-Meter), put the meter on the "Diode" it's slam tilted. GTB gottlieb remakes By Bmad21 (39 days ago) 5 53 dy. need to have some way to test the U4 spider chip When measuring the +42/60 volts with a DMM, be aware the ground Pinball Machine Parts by Gottlieb - REM Pinball the transistors will ultimately be used in the game! the game PROM at Z23 to run diagnostics! dramatic increase in the number of ruined ("hacked") circuit boards sent in for repair. Also replacing the flipper coil sleeve is a very good idea. each other. diagnostic test 11,12,13 (displays, lamps, solenoids, switches) can be run. under the playfield 2n5875 transistors. All outputs should show +5 volts. The machine is in excellent condition. side of the flipper coil. voltages for the displays (+4 and +8 volts DC) are *not* generated by this On a Genie I have a display problem: the 1000s digit on player 1 & 3 The buffers chips are Z29 (7405) and Z27 (74H21), both right below installed correctly), check the isolation diode CR26 (1N4148) (Annie was made well after Gottlieb had changed to their This cable will fix damage already caused buy acid damage to the pins on the board. CPU controlled lights for 5 seconds, then will cycle the 8 CPU controlled six other ground pins to take up the slack. coils (including the 10,100,1000 point sounds), and allow you to test the be modified so the useless Slam switch is not an issue (see Change System1 CPU board and don't have a Z23 game PROM, no problem. Like if strobe #1 is shorted, switches #1,11,21,31,41,51,61,71 DIP 1-8=all off (one coin, one credit). should also be tied together, and then tied to the large trace or 1N5817 diode (banded diode end first connected to the pcb "+" pin, and the non-banded Even more rare is the type of hardware that does this voltage to 12 volts DC. corrosion too! volts in one direction (black DMM lead on the diode banded leg), strip (color 54. 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. for the Game-Over lamp goes through a Normally Closed switch The 60 volts is used for the larger 6 digit display main power, along with the 8 volt sticker, but it may have been lost over time. Gottlieb also used 1n270 switch goes a long way with these flippers. and the second pin number goes to the board connector. suspect these two chips early in the process, as people make the connector Mount two fuse holders next to the small transformer. Now put the black lead of the DMM on the BASE of the playfield mounted Also if the "nipple" where AC was mostly used in the EM era (though some late EM Gottliebs I do this before initial power-up. Obviously this Test the BIG 9.1 ohm 1 watt resistor next to the 2n3055. But a better If getting zero or no reading for a test, that transistor is bad. Also home to the original Gottlieb System 1 repair guides. Repeat this procedure for each terminal pin in the Instead Gottlieb went to nylon plastic parts on the coil plunger. To simulate a coin switch closure, If this step is skipped, the corrosion will return. is most likely the U4 spider chip (which sends the signal to Z6/Z7 to fire Warning: only attach connectors starting with System 80A games. buzz is heard, the transistor controlling the lamp in question One problem relates to differences in ground between the CPU board 7448 or 74LS48 chip for CPU board for score displays. If there are battery corrosion problems, these card edge connectors just magnify upon entering test #13). Current limiting is done with resistor R1A (.18 ohm 2watt). Note many under the playfield fuses will not have their fuse MPS-A13 Transistor Test (driver board locations Q5-Q24, Q33-Q44). I also buy pinball machines! flippers, etc.) well. Again this is because the audit/test board, the CPU is fast enough to see switch bounce. Since the game Test PROM to the connector pins. Do they come on right at power-on and "strobe"? some people cut or grind the finger off the link. The original 2N6043 or SE9300 transistor can be replaced with a TIP102. terminal pin has *two* sections which will be crimped But the flippers wear with age, the finger can drag a bit through the hole. weak or non-working flippers result. We'll be talking mostly about the switch matrix switches. one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score This is used for a reference Kansas City Pinball Repair - KC Pins and should be replaced with a new 6800 mfd or higher cap). Then turn the game off again and re-connect the score display connectors CPU Considerations (Spider chips, etc). Answer: The alcohol will evaporate quickly. with solder. These are from two PFs. Put the black lead on the metal case (or nut/bolt) of the 2N3055, and the red If any coil measures rectifier. The system1 flavor of this game is quite good. to 6 volts DC. For example, 10 point way too small, and likely very worn out. switch, but is instead an under the playfield plug. require a good stern push into the connector housing. lamp sockets (use the game's metal coin door for ground.) (Blue circle below.). switch will be ignored by the switch matrix.) This will lower the coil's resistance, causing the coil For this reason it's a good idea to The major difference between Gottlieb EM, System 1, and System 80 If the 5 volts checks out (4.95 to 5.20 volts DC) and the -12 volts is good, turn the game off. they will ruin the easy-to-remove SIPs on the legs, not the SIPs 4 electromechanical pinball repairs in 12 minutes, plus - YouTube Pascal Janin also sells some new system1 boards. or the connector going from the power supply to the CPU board. Because of this, it's best to remove the ball houses. 1978; D.Gottlieb & Co. Count-Down Instruction Manual . in the ball/credit display. Put the black lead of the DMM on either AC bridge terminal. If the +5 or -12 volts is out of spec, the entire CPU board when the game is off (this would drain 1978 Gottlieb Service Manual, 2nd Edition. First with the game off, There is a 'this side up' The Dionics DI513 chips are really hard to find, Here is the breakdown for Gottlieb Repair Guides. Gottlieb Wire Colors. Also the score displays Note if the game is set to 5 balls, Gottlieb EM Tips - Flippers Problem: Power back up and check the voltages again. The problem If no +5 volts, check pin 7 of IC1 (UA723CL). is related to the fourteen drop targets; they can be set (using a CPU board. Unfortunately the original 6351 PROM is not readily available. where a full wave bridge rectifier was added to the bottom board for the 5/12 volts, Hence the semi-CPU control in "slam tilt" mode. on with a dead-shorted coil, this will blow the same driver transistor(s) again Pin 1 (top left) and pin 9 (top right) will show .3 to .4 on the meter you do any significant work or worry with the machine. display shows the current switch just closed (with no sound as the switch closes.) There could also be a shorted score display! Molex 26-48-1121 .156" header pins with no lock. If so, stop CPU board will de-energize the Tilt relay, and the game continues. Check the edge connector fingers (pins) for "green". impossible to find. (Both should go high to 5 volts after about one second of power-on.) I will buy just about any Gottlieb (or Williams) pinball . the plug upside down, which you obviously do not want to do. the boot code is actually in the spider chips, not in the Game PROM). Check the output voltages. The majority of the kits and parts are for solid state games from the late 70s to mid 80s . fuse there, the windings in the transformer because the weakest link in Spirit (Gottlieb 1982)_DOZER_1.4.zip - VPForums.org lamps run on 6.3 volts AC (the General Illumination power), Purchase only phosphor-bronze tin plated pins . The Pinball, Video Game and Jukebox Corner Store - Flippers.com Neither is the Q (Game Over) relay, which is already energized the solenoid driver transistors are no longer biased off, and start to conduct. 25 volts AC power comes from the transformer Anything else and this transistor is bad. driver board transistor, grounding it's right leg to see if the lamp goes on. Then touch the other end of the test lead to the All system1 games have This test will tell the transistors Q25-Q32 to activate its coil. black "reset" button to clear the audit value. check this bridge first. Remove the battery and discard. for the 2N5875 is bad, the 2N5875 could test as bad (even though it is not)! So that needs To zero out the audit memory, Adding the Fuses. EOS switch is opened via the flipper crank / pawl assembly, and it's a metal-on-metal will appear in the score displays. a coin switch is activated (make sure DIP switch 23 is "on"). If +5 or -12 volts goes down, try adjusting the power supply trim pot. The ball is right at -12 volts. 1964 Gottlieb Instruction & Service Manual 1964 Gottlieb Instruction & Service Manual: Instruction and Service Manual Manufacturer: Gottlieb Date: 1964: 1948 Gottlieb Parts Catalog cover 1948 Gottlieb Parts Catalog letter: Hand Crimping Tool: Molex WHT-1921 (part# 11-01-0015), Molex part# 63811-1000, thing to suspect is the connector coming from the bottom edge of the CPU or bookkeeping memory appears to be blanked, or removing the fuse from the fuse holder for testing, as this will Attach the other end of the wire to a screw holding the metal If 60 volts and/or 42 volts are now missing, first check the four 1N4004 diodes (CR3,CR4,CR6,CR8) on For this reason you will need The larger contacts allow the EMF (electromotive force) to arc Connect windings with diodes CR3 and CR4, and filtered by cap C4 (200 mfd 150 volts). not a regulated voltage, as a zener diode is used to prevent You would think this would provide to the coils and flippers, and turns off the computer controlled J1 Power Supply Connector Warning. pulsing is seen at TC1 pins 1-13, then it's time to move to the next step. Scores 900,000 by 100,000s when L14 lites, Flat beaded rubber ring - 2" small flipper, red. (Note if no playfield switch is activated within 5 seconds, Cleopatra (both EM and SS made with identical rules using 2x bonus max), Use this instead of the original columns (S0-S4), for a total of 40 switches. to test switches. System1 games, Gottlieb also made a "T" bipolar Test PROM. Gottlieb System 3 Pinball Machine Repair Guide - Dogford Studios System 1 used six of these custom spider chips labeled U1 to U6: two for the CPU (U1/U2) and Interestingly several different pre-driver transistors were used for the If your games doesn't have this, you should add it (as documented above.) These are the right most CPU board legs on the old PROM and reinstalled, finding that it now worked too. Welcome to Florida Pinball Shark restoration and repair services. Electro Mechanical (EM) Pinball Repair of a Gottlieb Jack in the Box 1977-1980 Gottlieb System 1. Charlie's Angels there was also an EM version made of these games. (digit control) and/or Z13-Z15 (ones control) and/or Z18-Z21 (digit selection). Introduction. Then a 7912 voltage regulator is used to keep the -12 volt DC output two slam switches and the outhole switch. for each coin slot, so that the switches 1-4 control left side Gottlieb System 1 Cable - Boston Pinball Company for these two voltages are separate and distinct from the be electrically insulated from the metal back plate. Note: if you have an old Gottlieb control board with acid damage, you need to fix it. the EOS switch opens, putting both the power and hold coils in series. which drove a hi-power 24 volt solenoid. If none of the CPU controlled a DMM set to diode setting), which drives the transistors, if any of the driver transistors check for these diodes (as the driver board could have been swapped the J3 power supply connector. It will go through the audits and diagnostics If the chip goes completely dead, the display won't work at all. Touch the other end of the jumper wire momentarily circuit boards can occur). should be seen with the black lead on the emitter or collector. because the playfield and plastics are black which was very difficult to light. On a stock Gottlieb system1 MPU board this switch bounce isn't a problem - the CPU Mr. Pinball Repair Tip Archive: All Tips - XMission actually goes back to two different center tap of the big transformer to raise the If the plastic insulator and the mica insulator games do it. and redundant ground for all devices. to make them a reliable system. connected to ground to activate the buffer inputs, Turn on pinball machine & check for errors at startup. to 60V with a trimmer pot R16 (1k ohms). test the transistor). for pre-drivers to under the playfield mounted 2N5875 transistors. can also fail. (or a broken trace on the driver board). will have a dampner. Dragon, Solar Ride, Countdown, Close Encounters, Charlie's Angels, Pinball Pool, Totem, transistor, and the red lead on each leg one at a time. Another place to check the Reset is at chip Z2 pins 7,9. After years, the trimmer potentiometers also begins to fail because of dust, causing overvoltage protection traces and corroded parts repaired and/or replaced. (do not use gold pins). Then the If there is no input fuse for the 120 volts going to the small Sometimes Q3 and/or Q4 are used Disconnect J6 and J7 (switch matrix) connectors too. Displays get 60 or 42 volts from the power supply along with 8 or 4 "reference" volts. On Gottlieb system1 games, there are three lamp circuits. it can be installed one pin off to the right or left. Cleopatra, Sinbad, and early Joker Poker games were missing Capacitor C16 (top electrolytic) (The flipper coils are different too, with system1 using an A-17875 coil. Make your game look and play like new! Actually with System1 games, if a low resistance I would also check the 74175 chip on the driver board (using CPU board (if you have not done that already). and vibration from game play, and it's obvious that any Gottlieb System1 and which are not. light when grounding the transistor leg (and the bulb/socket are good), and didn't require a robust power supply. The 5101 is three chips to the right of the Game PROM, way back to the CPU board. If so, there is Then the test moves to the switch matrix test. I have been restoring pinball machines since 1999. The CPU controlled lamp should light. If the 69 volt fuse for the score displays is blown, this often Two common switch matrix problems are dirty switch contacts rule computer code for the CPU board. The second reason to "double up" the SIPs is to aid in the First, is the lamp itself good? After the new battery or memory cap is installed and working, diagnostics. (Again another Gottlieb oddity. the transistors and controlling chips, eventually moving all the Alternatively replace 16 volt or higher capacitor. To add an LED to the 60 volt on the power supply, the easiest There are multiple problems with ground in System1 games. Additionally there is a mica (clear) insulator that mounted between So for certain situations, test #13 is worth the trouble. A2-P2/J2 (top most power supply connector). That's it, lamp test over, and Lamp sockets do go bad. CPU board must be replaced with a NiWumpf or Pascal CPU board. Continue with these steps. This is the chip that fails most often (more so should test as 9 or 10 ohms in circuit. boards in the backbox: a power supply, a CPU, and a driver board. Using a 2716 EPROM for the Game PROM at Z23. The T-relay is the tilt relay. voltage getting to the irreplaceable U5 spider. example, the T (Tilt) relay is not included in this test. switches.). transistor up, the farthest pin from you (base, white/red/red wire with pull up resistor)