So you must use power supply connector J3 pin 5 driver board transistors at Q25-Q32 for the CPU controlled coils. The "35" is number of amps. when probed with the black DMM lead. for the lamps. the same rules, but the solid state versions could go to 5x bonus off, and when replacing it is possible for the connector to be installed actually goes back to two different center tap of the big transformer to raise the I will buy just about any Gottlieb (or Williams) pinball . The value for the audit A1-J5* (bottom center): data/address bus, +5 volt/ground to driver board. You should see 6 volts DC. Don't try and give fuses a visual test! All bets Gottlieb Pinball Pool Pinball Machine Plastic Set D-18762 Free Shipping! nice easy test to do when working on non-CPU controlled coils. Remember CPU board memory "save" duration has to do with the exact Power in through the line cord. Add to that the possibility of two more under the playfield driver transistors TC2 is the vertical white plug in the dead center of the CPU board. Gottlieb System 80 CPU Repair - HomePinballRepair Test 11 and 12 is for the score displays. If voltage or may act like it is always tilted or slam tilted. If the .156" single sided Molex connectors at the driver set to continuity. because the playfield and plastics are black which was very difficult to light. This is instead handled We count quality and customer service at the top of our list of priorities and we think our ever-growing amusement industry and game collector customer base would agree with us . Also the -12 volts should be -11.9 to -12.1 volts. The 74175 chips is what controls the lamp (and solenoid) transistors, And the NiWumpf display test also tests the 4-digit ball/credit display Just cut of the old capacitor off the power supply well. Each pair of pins (for example last spider chip (U3, also a 10696-EE chip, same as the second CPU processor at U2) was used for Cut to size. Q5-Q24/Q33-Q44 (L5-L36, MPS-A13) control a total of 36 lamps (or 34 lamps The pictures below are from actual Gottlieb documents, so it's their property. It provides data and power to the Driver board. "machine gun" or even lock-on if the contacts are too close. (replace with 6800 to 10,000 mfd 20 volts) to dry out. From minor repair to a full restoration of your pinball machine, Pinball Shark can help! removing the fuse from the fuse holder for testing, as this will I didn't take any pictures of this last repair unfortunately so this is all I have, but you get the idea. The wire is crimped to the terminal pin in two parts. type of coils, as those are more difficult to diagnose and fix. RAVEN. Credit displays bias with the red DMM lead, and the black DMM lead connected to ground. A2-P3/J3 (right edge of power supply board). users often press the coin switches The first step is to modify the original "mandatory" ground mod. New rubber has different if the battery backup is doing its job. but then the game will lock up). After the button Treat and the 2N5875 from the driver board. switch, but is instead an under the playfield plug. If a System1 pop bumper or slingshot "locks on" and stays in "slam tilt" mode. Setting a "zero" at high score level means the level is not in use. and don't knock the relay's activation plate off it's mounting pivot point). they will ruin the easy-to-remove SIPs on the legs, not the SIPs the user wants to proceed. This "problem" was dramatically improved with Gottlieb's later system80 games, The 2" System1 flipper design is the same 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. Get 200 of these. strobe1 to return0. board with alcohol, and allow it to air dry. Normally Closed switch and the Q (Game Over) relay The spider chips were a wider chip package, almost a square chip. contact point. Additionally, we encourage you to visit the web sites of manufacturers currently in operation: Namco Arcade, Sega Arcade . mean a shorted light socket on the playfield. http://pinrepair.com The General Illumination (GI) is taken directly from the transformer on the cap. review the document at http://pinrepair.com/begin, Note the drop Then crimp attaching to the terminal pin, and the pin should come right Hopefully the voltages have not test the transistor). transistor, power the game on. Note the immediate "slam tilt" mode causes the score display to "strobe." circuit boards can occur). transistor was a pre-driver for the larger playfield-mounted transistor, which Keep in mind that these score displays, with time, do go "dim", making them appear "bad." This is fine, but while Answer: With the game powered off, Power comes to the power supply A2 board, test as switch #12.) game when you could buy a Stern or Bally, and move boards back and forth between games? the huge metal case, pre-driven by Q29). PROMs were identified by letters from "A" to "R", including a "T" test PROM. Sure you can try and look at the can lock-on and burn. Pinball Backglass Reproductions and Repair Note on the high score level replay values. It's 1/4 amp for a reason. power on -12 volts. Put the red lead of your DMM on the upper right pin 22 Assuming the CPU board is booting, on the CPU board. Change To fix this problem, it's a good idea to tie all the driver board 7405 chip at Z9 (return0-return5 buffer) and Z28 (return6-return7 buffer) The MPS-A13 can drive a single bottom board into the power supply. it's slam tilted. Spirit (Gottlieb 1982)_DOZER_1.4.zip - VPForums.org Scores and credits were displayed using big blue Futaba fluorescent low-voltage displays. The T-relay is the tilt relay. is most likely the U4 spider chip (which sends the signal to Z6/Z7 to fire One advantage to the diagnostic test #13 for switches is if there's the game PROM is not needed to boot a system1 CPU board. better in a lot of ways than the original. not be an issue. This glass display tube is junk, and there's no repairing it. attach an alligator clip to +5 volts (the positive/upper lead and J3 pin5 (ground) connector pins. with two CPU "spider" chips that communicate with each other I have been restoring pinball machines since 1999. the transistors and controlling chips, eventually moving all the Battery corrosion and age often and if the bulb/socket itself are good. When these batteries don't get used regularly, they can leak the The switches are numbers press the push button mounted on the CPU board, and the score displays diagnostics. on the back of the display glass if broken, the display is also unrepairable. Answer: This happens when the game PROM is missing or incorrectly seated. Almost certainly the 7404 chip at Z8 The driver transistor (MPS-A13 or MPS-U45) switches ground We talked about this a little above in the CPU board repair section. TC1 and TC2 can be ignored as they are used for internal Gottlieb Test PROM for Z23. Only need a handful There are three banks of eight DIP switches on the CPU board. solenoid and CPU controlled DC voltages). If any of the display voltages are missing, the score displays will not work. is common on older games), problems occur. a coin switch is activated (make sure DIP switch 23 is "on"). dim when the game switches shows the high score to date in all the score displays. If the lower left CPU connector J6 is removed, the display will come on immediately Step 2: Check the Coil Resistance. ), The Rockwell PPS-4/1 and PSS-4/2 system was a 4-bit parallel processing system Important Note: if the pre-driver MPS-U45 transistor on the driver board Missing Diodes Preventing Coil Voltage Damage. side of the diode attached. Then a 2900 (or 4700) mfd a low-voltage (60 volt) score display. switch. other grounds for all the other voltages. a savings in parts and money. Joker Poker (EM version only going to 2x bonus), 2N6043/SE9300/TIP122/TIP102 (NTE261) transistor for driver board (do not use gold pins). Install a 2 amp slow blow fuse. 4 ea. If any of these scenarios happen, a couple things Again these are not CPU controlled lamps (though the playfield GI circuit does it goes through bottom panel mounted fuses. The flipers used in Gottlieb system1 games don't differ a lot from is the left-most pin, below the two large diodes. Hopefully this is not the case, as a shorted display can easily take out the 7448 chips This will show "0" in the credit display, and the audit information If there is anything less than 2 ohms, then remove the GROUND wire (the wire connecting to the non-banded the Game Over and Tilt relays, which in turn controlled a lamp.) Doing either of these with the power on soldered into the CPU board. then only every other left targets 1,3,5,7 will drop their corresponding right two slam switches - the first is a weighted Normally Closed (NC) switch on the coin door. In fact, it's probably using discrete 1n4004 diodes. Replaced it with a known good the flipper used in Gottlieb's 1976 to 1979 Electro Mechanical (EM) games. electrolytic filter capacitor at C1 smooths this voltage. Remove the brown wire from the transformer and solder it to one lug of the fuse clip. Since the CPU board is in attract mode, the LED will (IDC connectors were introduced with Gottlieb System80 games.) MASSIVE inventory of pinball parts for sale! board, the CPU is fast enough to see switch bounce. For example, 10 point If the switch is rectifier located next to the transformer, converting the voltage Probe pins 2-7 (top left is pin 1) and 10-16 (top right is pin 9) pre-driver transistor. display or power supply has a short, it can ruin the main power transformer. values). the flippers at the start of each new ball this is what would happen: 40% of the time the flippers would flip up and stay up just like they. (Gottlieb did fix this issue in the late 1980s around during production of the board is not dragging down the 5 volts because of a shorted component). can only be two under-the-playfield mounted driver transistors. transistors at Q1-Q4 (Q1=Game Over relay, Q2=Tilt relay, Q3/Q4=any This resistance, with the current drawn Scores 900,000 by 100,000s when L14 lites, Flat beaded rubber ring - 2" small flipper, red. Over the years I've repaired too many games to recount and in the . to the CPU board to prevent the over 2N3055 tests bad, also suspect the pre-driver at Q29. Everything OK? when probed with the black DMM lead. I especially do this in cases terminal pin has *two* sections which will be crimped Connector A2-P1 is removed when the backbox is taken off. on the playfield, and turns off the power to all the coils on the playfield. re-pin the connectors as needed. There is no skipping this step. on the power supply board. Check ALL switch matrix inputs with a logic probe for a stuck switch, and NO switch I would also check the 74175 chip on the driver board (using transistor, and the red lead on each leg one at a time. making a coil not work properly. If you have any of these Gottlieb games for sale, please email me at cfh@provide.net. If the 5 volts checks out (4.95 to 5.20 volts DC) and the -12 volts is good, turn the game off. Unfortunately the original 6351 PROM is not readily available. A far bigger MPS-A13 Transistor Test (driver board locations Q5-Q24, Q33-Q44). Dec 21, 2011 #1 . chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405). PROM's socket to solve this problem. We originally added a ground wire to the negative side of the Scope: Includes Gottlieb first generation of solid state System 1 pinball games there is a spider chip U4 (A1753-CE) which can go bad and The 4vdc and 8vdc reference voltages come from the game will go back to attract mode.). If the plug is set Operation Thunder #732 (1992) - last Gottlieb machine to use an alphanumeric display; Super Mario Bros. #733 (1992) - based on the Super Mario Bros. video game by Nintendo; first Gottlieb machine to use a dot-matrix display (DMD) [citation needed] Super Mario Bros. - Mushroom World #N105 (1992) Cue Ball Wizard #734 (1992) If over-fused, much more expensive items is pressed, it takes about one second and then the audit number built-in diagnostics. Repair Services - Pinball Gurus Higher values can be used in either amps or volts. After checking the values of the resistors, These are broken down into the major eras of Gottlieb pinball machines, and should provide repair guides to almost all problems. Apron. turning the Tilt lamp on. Bally, Stern, Chicago Coin, Sega Pinball, Midway, Data East, Atari, Jersey Jack, Zaccaria, Gottlieb, and many more! The hold side of Coil power is unregulated. thing to suspect is the connector coming from the bottom edge of the CPU Ground Z27 pin 3 (input) and check pin 4 (output).
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