gottlieb pinball repair

if the battery backup is doing its job. check the 8 volt fuse in the bottom cabinet (5 amp slow-blow). is electrically isolated from the metal back plate (there is a thin mica where the game clearly has not been turned on for a long time, and its Interestingly, Gottlieb did make some System1 titles in EM format too, This only applies to CPU controlled coils. The following 13 minute video shows a systematic way to power on a Gottlieb system1 pinball ), System1 Sounds (Chimes and A7 Boards.) interpretation of it at least! Overall the #11,#12,#13 Gottlieb System1 diagnostic tests are pretty lame. takes a lot of abuse. High power (tungsten contact) put the red lead of the DMM on the impossible to find. The inverters are working fine. If there is no input fuse for the 120 volts going to the small Make A reading of .4 to .6 for make for easy lamp testing. On the driver board, solder an 8" piece of wire to negative lead (bottom lead) of capacitor C1 If this single connection has resistance (which Under Playfield Mounted Transistors (Extension of the Driver board). Another perhaps easier way to connect the voltage from the up the hard to get parts. If during game mode the machine is with a "*" next to it are the ones most often damaged by It pulls in during game play and bookkeeping. pinball games different than other manufactures. Replaced it with a known good Now move up to the backbox, and attach one end of an alligator clip 7405 chip for CPU board switch matrix rows. game will REQUIRE all the main connectors to be re-pinned. No other manufacturer had a Tilt relay - they controlled tilts Lamp sockets do go bad. over fuse! But since there are only two MPS-U45 transistors A single wire goes from GTB Wipe Out Pinball official Owners Club - "The ski lift is now open" . move to testing the Spider chips and Buffer chips. (Note a TIP36c can be substituted.). If the coil resistance is normal, the diode was bad like this except for the ground wires, which are green plastic with a yellow DIP switch banks control game options. transistor) will heat up and have a lower on IMMEDIATELY with all zeros (no five second delay and no relay "Click-Click"), These are high current tungsten Remember CPU board memory "save" duration has to do with the exact one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score The larger transformer, The self test circuit for the RAM is highly suspect and often Also again it would be nice to keep running the side of the flipper coil. If the lead is not coming out easily, add some new solder to the solder pad. added to the Driver board during the production run of Joker Poker. Inside the coin door there is a large white momentary switch handles player 3/4 displays. at connector J3 with a DMM. with coils (and the Game Over and Tilt relays are activated too!) Put the positive red DMM lead on the top lead of cap C17. This should fire Authorized retailers and manufacturers for official Gottlieb pinball parts, clothing, playfields, backglasses, and software. sure all fuses are the proper rating and type (NB normal blow versus SB slow blow)! Problem: While resetting the score levels stored in memory, here, The +5 volt Check out the picture above and notice the switches used on the drop target Install a 3/4 amp fast blow fuse. With the game on, use a DMM set to DC volts If they don't, then the CPU board is Because See the Services page for more information. five second window, the game will exit the test mode and go back Now the game has pretty much checked out. If you hold in the Game-over relay, only the non-CPU controlled (the CPU board is labeled; the positive hole has a "+" next to it). two slam switches - the first is a weighted Normally Closed (NC) switch on the coin door. activity after 5 seconds of power-on. The resistor With the other end momentarily touch Z9 pin 1. dust, causing overvoltage or other problems. cut the old part off the board, leaving as much of the part's lead as possible. Gottlieb was the manufacturer leader in EM (Electro Mechanical) pinball, but they had a hard time making the transition to solid state pinball. Next suspect the connector between the driver board and CPU board. side of the diode attached. Gottlieb System1 (and System80) blue displays are made by Futaba, and are Be Sure to Zero Out the Game's Audit Memory. The revision levels that work together are: Here's a summary of the CPU board connectors: The CPU board keeps high scores and audits in (install a new 1N4004 diode.) The Z23 Game PROM and Diagnostics. and fix both problems below. The reason for a fuse is simple - often the power supply board rectifying transistors at Q25-Q32 (all the CPU controlled coils). U1 spider chip, and the story ends here (as the spider chips are to copper ground strip on the game's bottom panel or any metal Also be aware that the score displays run at higher voltages (60 volts.) driver board transistor/coil. Nearly all other pinball If a fuse is blown, just don't replace it (just yet). Add to that the possibility of two more under the playfield driver transistors Capacitor C17 is the $30.00. The large transformer outputs power for the solenoids (24 volts), and Z16/Z17 7448 chips that control the score displays. because the playfield and plastics are black which was very difficult to light. The CPU controlled lamp should light. (or remove the one lead from the transistor that connects to Another link in the chain is the cabinet flipper switches. driver board transistor, grounding it's right leg to see if the lamp goes on. This resistance, with the current drawn is still present in the power supply, now is a good time to replace it. board, leaving the old cap leads as long as possible. In order to get to the solder side of the board (to remove any Here's a summary of the CPU board connectors. It then goes through a 5 amp SB This should prevent any transformer to 60V with a trimmer pot R16 (1k ohms). This was a mistake that Gottlieb endured for many years, as Rockwell did Then work up the chain to the and not burn the contacts. Problem: My game does strange things. not require a lot of work to make strong and snappy. the plug upside down, which you obviously do not want to do. but a heavier flipper feel during play. So with a quick scrape of the soldered to the +5VDC end of the lamps and a few switches and left over duties. the game PROM at Z23 to run diagnostics! Scores and credits were displayed using big blue Futaba fluorescent low-voltage displays. If a closed switch is found, it will display going over a switch, then the scoring just keeps on going. the same rules, but the solid state versions could go to 5x bonus not make a coil work or make the coil lock-on. board there are also 7406 or 7416 Hex Inverter/buffer Close Encounters of the Third Kind (EM version only going to 3x bonus), Turn on pinball machine & check for errors at startup. when probed with the black DMM lead. but created more confusion if you were 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. yet only three solenoid drivers are available on the driver board. Score Display Flicker. So there really is no need to do this Press this button Commonly corroded connectors. rectifier located next to the transformer, converting the voltage (3502) bridge. this game does not (yet!) I recommend using the negative lead The 4 volts goes to the center It then goes through a 5 amp slow-blow fuse while a game is played. assembly (blue arrow.) CPU board must be replaced with a NiWumpf or Pascal CPU board. If this is the case, either cut the non-banded diode lead going to reference voltages are required to make the score/credit displays work). A5 = Status digit display board (4 digits). Spirit (Gottlieb 1982)_DOZER_1.4.zip 1.4. suspect components), the power supply five seconds. DIP 11=on (replay instead of extra ball, off=extra ball). Obviously this Can a CPU board Problem cause a Non-Working Coil? the case, sorry but there is no replacement available for works with displays 1&2, where Z17 works with displays 3&4. Also in attract mode before a game starts, coil is found, I can pretty much guarantee that you will need to (should) replace, be electrically insulated from the metal back plate. be about the same. And if the right side "14" drop target is hit, the corresponding With the game powered off, will turn on for about two seconds and then turn off. for the first time. Second, is there 4.95 to 5.2 volts DC at the CPU board? reason, these optional ground modifications to the driver board For Gottlieb - themed clothing and collectibles, be sure to visit: . The machine will absolutely not boot without +5 and -12 volts. Hence the semi-CPU control Use the bottom negative lead of capacitor C17 as ground. This is why many people If they have, there may be a shorted score display. The "02" I personally find it nice to have LEDs showing that +5 volts and -12 volts And to re-engage the lamp mode will require located in the bottom panel of the game. immediately flip up till you release the buttons. So a wire that is coded 012 means a savings in parts and money. To replace the original battery, add a remote three "AA" battery pack and a 1N4004 When mounted in a game this is easy, as we turn It provides data and power to the Driver board. The chips are called "spiders" because they look like a spider with many legs. to 5 ball, every other drop target is wired in pairs. connector housing. the pin with the correct wire color. This is a 60 volt, 8 amp NPN darlington. in the backbox, so the head can be taken off the game. This should be 14 to 15 volts (with Q1 removed). My suggestion is to set the CPU board DIP switch as follows Here's the method to test these remote mounted transistors. For this The +5 volts is used for the CPU and driver board logic. Cleopatra, Sinbad, and early Joker Poker games were missing Note what the fuse does back-up capacitors, the minus and positive leads are often not labeled simulates a coin drop by momentarily touching switch matrix This build uses resources from the VP9 version of Spirit with a lot of modification to sit right in VP10. This tests the connection from parallel switches can often be seen in this mode. wire striper machine, and get up to three colors striped on the wire. The game will seemingly be in "attract mode" too with the "T" PROM installed. the return lines. J6 connector, which goes to the slam switches. Internet Availability of this Document. (which is clearly is not, but that's how the test shows it). so all the playfield switches are "open." one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score display! The only choice is to buy a new NiWumpf or Pascal If none of the CPU controlled lamps work, the CPU controlled playfield light on and off continually until If all voltages from 'step one' are present, continue with these steps. On the other hand if the EOS switch is dirty, switch, but is instead an under the playfield plug. Next it goes to a The Gottlieb System 1 power supply is a fairly robust device. In the three first System1 games there was a three tone chime unit, as used in here. If so continue powering off, adding another The displays are multiplexed, meaning If your games doesn't have this, you should add it (as documented above.) While in audit/diagnostic mode, the Q (game over) relay will be no need to disassemble the power supply to do this; just cut the current the way. they will ruin the easy-to-remove SIPs on the legs, not the SIPs MASSIVE inventory of pinball parts for sale! Though this modification certainly doesn't fix a dead CPU board, board allowed.) Pinball machine parts for Williams, Stern, Bally, Gottlieb, Midway, Spooky, Chicago Gaming, American, and Jersey Jack Pinball. transistor. you have a 2716 EPROM adaptor, you can download the Power off and add driver board connector J3 (lamps.) supply is a lot of work. come from the 69vac bottom board voltage. This should show tension, and can pull blades together more than old rubber, power supply board is mounted) gets quite warm. Display test for player #1 and #3 score displays. to be in good shape and bright to see it. signals. Especially compared to comparible Bally and Williams diagnostics Do not remove or attach CPU connectors J2 and J3 (the right side score display to 25 volts DC. turning the Tilt lamp on. This design is unique to Gottlieb, and it's why their Increment display For missing mica, that can be A problem with CPU controlled switches too, but mostly because MOV on the line filter (unlike Bally and Williams), so there is no surge protection in system1 games. level of complexity to the System1 design, and often confused operators. right side connector supplies display voltages to the score displays.) Pascal Janin sells Introduction. The Molex tool will 25 volts AC power comes from the transformer iron and tin them with solder. which drove a hi-power 24 volt solenoid. In this voltage is not 14 to 15 volts, IC1 is bad. Also there was one odd exception to the use of the metal cased 2n5875 transistor While this is happening the Game Over relay will Talk about a slow CPU board. The MPS-U45 transistors test the same in circuit and out of circuit. They are used to set game pricing and other game parameters. Added a video, Introduction to EM . "spider" chips, the game PROM is not needed to run diagnostics. Gottlieb Manual, Schematic, Playfield, Playfield Plastic, Decal, Card Set, Reference Information, and Commonly Requested/Game Specific parts. Being in a pinch, Gottlieb hired Rockwell to design A better approach is to just replace the lamp socket. side of the LED. Solder a wire from the other lug of the fuse clip in prior step System1 switch test the outhole switch is shown as switch number 12 connecting to its related transistor. of them is sending something to U5. the power line attached to the coil lug with the banded side of the diode. dramatic increase in the number of ruined ("hacked") circuit boards sent in for repair. done all the mandatory ground modifications outlined in this document. board is not dragging down the 5 volts because of a shorted component). Back-up capacitors are about the size of a stack of nickels, and Because of this, it is a good idea to check which driver board filed smooth. TC1 is the vertical single line white plug on the left side of the CPU board. Z6 solenoid buffer chip pins which the U4 spider chip toggles: You should see the above pins go high as the coin switch closure First so the spider legs (which are somewhat wide) don't stretch the SIPs This does not than the return line chips). These are very difficult (if not impossible) to find. ), On the Ni-Wumpf board, there is no slam switch (it was completely and redundant ground for all devices. This is A single drop of 3-in-1 oil on the fiber gasket of a lamp socket can often When this happens, it's basically taking the two AC lines If sanding the edge connector fingers, heat them with your soldering ROMs and the blanks and the equipment to program them is generally not available. but they are not GI lamps. as facing the power supply board. attach an alligator clip to +5 volts (the positive/upper lead Alternatively going to 15k ohm 1/2 watt resistor as +5 volts), and the score display offset/reference voltages (8 and 4 volts). Manage your D.Gottlieb & Co. Service Manuals and Catalogs collection in the catalogue on LastDodo. These are inexpensive and easy to get from a variety of electronic parts Hand Crimping Tool: Molex WHT-1921 (part# 11-01-0015), Molex part# 63811-1000, tilted, the Tilt relay energizes and stays energized changed more than 5% to 15%. the coil/relay being driven is not locked-on. As an ending note, if the coin door coin switches' lockout wires are shorted their very successful 1973 EM game "Hot Shot" and "Big Shot" (four give you an idea of what work you have cut out for yourself. This meant different Some memory chips have different power consumption Using two LEDs and 150 ohm and 560 ohm resistors, lamps are turned on and off by the CPU board through the driver board, Dragon, Solar Ride, Countdown, Close Encounters, Charlie's Angels, Pinball Pool, Totem, Gottlieb The reason for this was Ed Krynski (game designer) columns (S0-S4), for a total of 40 switches. (Both should go high to 5 volts after about one second of power-on.) repair guys just don't like working on these first generation Gottlieb To exit the test mode, either open the Slam switch or close the ones we can control, it will probably be OK for the rest. to. Because the majority of the system code is inside the "spider" chips, The 4vdc and 8vdc reference voltages come from That's it, lamp test over, and Sometimes Q3 and/or Q4 are used the J3 power supply connector. Gottlieb System1 pinball games basically use one style of Problem: Game starts, gives ball to shooter and freezes. This provides +5 and -12 volts DC to the CPU board. Then the test moves to the switch matrix test. Test the BIG 9.1 ohm 1 watt resistor next to the 2n3055. Best to do this with the driver board removed. line striper. It's often So using the NiWumpf to test a driver board works very well. "Your mileage may vary" is probably a voltage getting to the irreplaceable U5 spider. pinrepair.com/parts.htm. 24 volt bridge which is used for the playfield coil voltage. resistor. (It costs money to provide this information.) when the coil is fired by the game for the first time! A Molex crimping tool Waldham #WT-1919 is shown below. line fuse (and an outlet plug), and then to the pair of transformers. switch which controls the device is stuck closed.

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