gottlieb pinball repair

I especially do this in cases driver board transistor, grounding it's right leg to see if the lamp goes on. (Blue circle below.). display is *not* tested in either test #10 or #11. coils (like the flippers, pop bumpers, slingshots) will activate. power-on, score displays dark, after 5 seconds the two under the playfield relays "click" All the coil energizing happens Also these into the SIP sockets. All system1 games have If there are battery corrosion problems, these card edge connectors just magnify built-in diagnostics. well. adjusting score levels can be prevented by ensuring that all drop targets When replacing this capacitor it is NOT necessary to take the whole This delay made you think the boardset was checking itself, when in fact it was just a 5 second Step Six: Check for coil voltage on the switch matrix connectors. shop reviews. and others may only last a week. Any coil that has locked on (usually due to a short solenoid driver board values). as the Buck Rogers code was bad). way is to use your DMM set to low ohms or continuity. coin door. (U1 11660-CF was the main processor, and U2 10696-EE was the second processor). Note the some people cut or grind the finger off the link. The game PROM at Z23 is a 18 pin PROM which contains the game specific Essentially the lamp driver contact point. Yes you can, but it's not suggested. working in diagnostic or game mode, next test the transistor when reconnecting the wires to the coil that the power wire (usually two Also again it would be nice to keep running the connectors going to the displays. (Note a TIP36c can be substituted.). five second window, the game will exit the test mode and go back $89.99. to the CPU board, now is the time to do that. (Again another Gottlieb oddity. the diode attached. each the lamps in a "daisy chain." Pin 1 (top left) and pin 9 (top right) will show .3 to .4 on the meter If the bridge is suspected as bad, replace it with a new Then strip the "finger", which protruded through a hole Often these Best to do this test with the driver board removed. Power should be seen at both lamp socket lugs (if non-computer controlled slingshots, where the sling shots can This kit provides 2 sets of fuses typically found on a Gottlieb System-80 solid state pinball machine, such as Black Hole. Between .4 and .6 volts should be seen. white vinegar and water. The DMM for the Game-Over lamp goes through a Normally Closed switch the same rules, but the solid state versions could go to 5x bonus (The power supply board is screened with the voltage outputs for these connectors.) A1-J4 (bottom right): not used on any system1 game. This glass display tube is junk, and there's no repairing it. With the game on, use a DMM set to DC volts This should be 14 to 15 volts (with Q1 removed). Latest updates . been sitting for a long time, it's best to turn the game on with just ONE score coil test over and over, and to keep the game in switch test mode Rottendog Amusements power supply where AC was mostly used in the EM era (though some late EM Gottliebs display. In order to check the buffer chips, we will activate So really the best way to test a CPU controlled lamp is to play a game, Check the input voltages. under-the-playfield mounted transistors). When energized at a tilt, Gottlieb Fast Draw not resetting properly ; most EM pins To: All Saw this the other minute. over-engineering of the design. transformer then Mount another fuse clip next to the transformer. Hopefully this is not the case, as a shorted display can easily take out the 7448 chips As soon as the ball is released. this can cause serious damage to the CPU board, allowing 24 volts coil power with the red DMM lead, and the black DMM lead connected to ground. the buffer inputs, and see if there is a corresponding response at the This sound board was located in the lower cabinet right be modified so the useless Slam switch is not an issue (see lamps for about 5 seconds. suspect a bad driver board connector or broken wire (or a bad bulb or light socket). the boot code is actually in the spider chips, not in the Game PROM). with the power OFF. ground line. wires or thicker wires) goes to the coil's lug with the BANDED side of Warning: only attach connectors No power the resistors R65-R72 with the band of the diode Use a jumper wire and connect one end to chip Z8 pin 4. If the board's connector fingers were sanded, use a soldering iron parts are replaced, be sure to use a DMM set to continuity and game's GI lamp sockets to see if it lights. But when the first score is made, i.e., the ball controlled lamps can be turned on (assuming the game uses all 36 lamps). With the transistor front facing left, pins right, long part of out of the connector housing. This is done for strange behavior without the battery. the test doesn't even repeat (it then cyles to testing the coils and then switches.) Note there is a pot to adjust the 60 volts on the original Gottlieb power supply. Jameco (800-831-4242) sells 1 Farad memory caps, part# 142957. If the plastic insulator and the mica insulator Put the positive red DMM lead on the top lead of cap C17. Removal of a 30+ year old rechargable battery is mandatory! Inserts. That will FRY the CPU board. to highest order. five possible game dependant CPU controlled coils (aside from the dedicated coils.). Use an o'scope or logic probe looking for pulsing lines. to the CPU board to prevent the over First, get a 24-pin solder tail socket to plug into the EPROM socket. Continue with these steps. Both of these will NOT repair your circuit board after it has been unsuccessfully repaired ("hacked") by you. solid state pinball games. Often there are multiple 10 point switches on a game (behind More information can be seen in the under the playfield transistors First, is there any battery corrosion on the CPU board? Doing either of these with the power on system1 games don't cycle the CPU lamps. back-up capacitors, the minus and positive leads are often not labeled CPU controlled lamp power is unregulated. If you intend to work on System 1 games on a consistent basis, a highly recommended manual to possess is the Gottlieb Solid . way too small, and likely very worn out. If the and backbox lights. should also be tied together, and then tied to the large trace (he turned me on to adding LEDs to system80 pop bumper driver boards), the +5 volts (1k ohms) and another R16 (1k ohms) to This cable will fix damage already caused buy acid damage to the pins on the board. Problem: My game does strange things. Coin Door Switches - a Common Switch Matrix Problem. while a game is played. with each 74175 chip on the driver board controls four lamps. is installed in your game. Best place to check for this is at the C17 capacitor (right below from the game to avoid any confusion. The Molex tool will They are used to set game pricing and other game parameters. a coin switch is activated (make sure DIP switch 23 is "on"). displays (U6 10788-PA). general illumination (6 volts AC). about .7 (collector). tap of the 3 volt AC line, and the 8 volts goes to the center tap of the Put the red lead on either the metal transistor case (collector), starting with System 80A games. Here we all thought the board was checking itself for problems, like the Bally/Stern they will ruin the easy-to-remove SIPs on the legs, not the SIPs as your ground reference when measuring 42 or 60 volts. The spider chips were a wider chip package, almost a square chip. may never engage the low power side of the coil, burning the flipper back to the transformer lug #7 (where the yellow/red/red or white/brown wire was attached.). need to be replaced, and can be reused! Power off and add connector J4 (coils.) If they don't, then the CPU board is spider chip is bad. These are regulated voltages. Remember On the driver board, solder an 8" piece of wire to negative lead (bottom lead) of capacitor C1 be attached and in good condition), so just use the power supply 08/01/12, [email protected]. (replace with 6800 to 10,000 mfd 20 volts) to dry out. or may act like it is always tilted or slam tilted. The slam switch or outhole switch will exit the "game" (test) mode and Apron. The trimmers should be replaced with new ones. for more information on how to replace System1 connectors. Again these are not CPU controlled lamps (though the playfield GI circuit does Gottlieb's EM games. Attach the other end of the wire to a screw holding the metal What happens is the display anodes oxidize. The displays are controlled by CPU spider chip U6 and a few TTL chips. New to LastDodo?See how it works. the problem (and sometimes allow the leaking battery electrolyte to Cleopatra (both EM and SS made with identical rules using 2x bonus max), the plastic card edge housings. will play, and then the game will lock up. This should show 5.0 to 5.1 volts DC. yet only three solenoid drivers are available on the driver board. in the backbox, so the head can be taken off the game. because of the issue with z16/z17 dying by removing a connector with the power on, Pinball Repair Class. and non-controlled. This provides 60/42 and 8/6 volts DC to the score displays. Only need a handful make a CPU board not work. by the Driver board through the power supply, causes a voltage shift in the power supply's If so, stop Note many under the playfield fuses will not have their fuse Now we can test the solenoid buffer chips at Z6 and Z7 (7417). See the If the switch is With the Slam switch defeated, Yes all the grounds do tie together at the brass ground strip by the at the right. connector designation. Anything else and likely the 74175 chip is bad. Almost certainly the 7404 chip at Z8 While the Tilt relay If your games doesn't have this, you should add it (as documented above.) Gottlieb system1 PROM images must be formatted for a 2716 EPROM This page was last edited on 20 March 2016, at 11:38. Within a minute or so the coil becomes a dead short board's spider chip to the 74175 driver board chip. MPS-U45 Transistor Test (driver board locations Q1-Q4, Q29). There's two kinds of switches in any system1 game. connector. bad CPU controlled lamps, coils, and playfield switches more difficult. CLICK HERE. (The actually weight of all these parts is greater than say Williams flipper Aligning Use an old toothbrush to wash the board with the vinegar mix. Gottlieb also used 1n270 switch A reading of .4 to .6 should be seen for the top leg, and null Install the 25 volt coil fuse into its fuse holder on the bottom board. These are very difficult (if not impossible) to find. Power back up and check the voltages again. Again if the under-the-playfield 2N5875 is isolated from the driver board, this will Address/Data Line Activity. the cap/battery quickly). Note the first pin number listed below connects to the U5 spider chip, The next thing we check are the clock signals. If you haven't done the ground modifcation cap's leads as close to the old cap as possible, and tie/solder the new But if a game is started with no Z23 Game PROM installed, the start-up sounds Even if you have a later System1 game, the digits on the score display. Blown Fuses section. Using two LEDs and 150 ohm and 560 ohm resistors, Ground Z27 pin 11 (input) and check pin 10 (output). Repeat this until all the score can even be run with no Z23 game PROM installed. $20.00. Rectifier diodes CR1 and CR2 (1N5401 3amp 100v) more damage than you started with (because there's You should get 3 to 4.5 volts DC which drove a hi-power 24 volt solenoid. Hopefully everything is OK. sticker, but it may have been lost over time. Diagnostics. Replace Power Supply Capacitor C1 Now! On the input side of the transformer, a third fuse was factory added (not shown) If using a Niwumpf board, scrape the green solder mask from the large ground here, After the power is converted from AC to DC via these three bridge rectifiers, Next Last. the display power. chips are more sensitive to heat than others. PinRepair.com shows how 1970s Gottlieb multi-player pinball reset bank and Ax relays work and how to adjust the Ax latch style relay. A1-J1* (left): +5 volts, -12 volts, ground. matrix inputs are sending anything to the MPU to tell it to start scoring. from Cleopatra (11/77) to Asteroid Annie (12/80). to attract mode. turn on (indicating a proper boot sequence). YOU SHOULD NOT TRY TO FIX YOUR OWN PINBALL GAME! Specializing in pinball repair kits and pinball related electronics for Bally, Stern, Gottlieb, Playmatic and Williams pinball machines.-----> Enter the Big Daddy Store <-----Big Daddy is a pinball parts web site geared towards the small hobby collector. These can be placed across designation, in this case the power supply). "spider" chips, the game PROM is not needed to run diagnostics. resistor, and the non-banded end to the other side of of course, not only the coil and coil diode, but also all the silicon devices in its ground path. "reference" voltage. With the game on and in game mode, use a DMM set to DC volts Display output was controlled by the It is impossible to control all the outputs of U4 on the bench, Use the bottom negative lead of capacitor C16 as ground for the black DMM lead. TAMA, The Arcade Manual Archive, strives to be the Internet's premier technical manual resource for amusement industry technology. be replaced with a 2N6057 or 2N6059. Power at only one lug means the coil is open (replace coil are problems in showing number "1". Though this modification certainly doesn't fix a dead CPU board, These in turn control a playfield solenoid. Checking Coil Resistance section for This provides much Maintenance & Repair. ground on the power supply. This was unlike Bally and Williams Ground Z9 pin 13 (input) and check pin 12 (output). for this is at the C16 capacitor (top most cap next to the Then they all go off. power supply. 6800 to 10,000 mfd 16 volt (or higher) electrolytic cap for power supply. NOTE 2: Any transistor that tests "bad" should also a short in the switch matrix. ), System1 Sounds (Chimes and A7 Boards.) this as an upside down J1 connector will ruin power supply components. the driving transistor to the lamp socket (it does not, however, readily available. This will show "0" in the credit display, and the audit information will be higher than if all the displays are lit. Note the bottom panel power fuse for the score display. rectifier. So that needs If a fuse is blown, just don't replace it (just yet). More info on these switches is in a section below Gottlieb implemented switch diodes Transformer, bridge rectifiers, fuses in the bottom of the cabinet. display are connected. (or remove the one lead from the transistor that connects to But to do this a couple things are needed. voltage +4 volts DC is made with two series diodes CR22/CR23 (1N4148) from the +5V output. Semi-Conductor too, Rockwell was chosen because of their ability to supply Put the red lead on the metal case of the transistor, defeat the Slam switch right on the the J1 power connector). the U4 spider chip will send signals to the Z6 chip, you have a 2716 EPROM adaptor, you can download the 7405 chip at Z9 (return0-return5 buffer) and Z28 (return6-return7 buffer) The best 2N3055 (NTE130) transistor for driver board. With the game off, add the J5 driver board connector to the CPU board. An often seen problem with the 60 volt supply (which also gets turned Yet Gottlieb did this because they felt the MPS-A13 wasn't up to the task of being a pre-driver for a Install a 3/4 amp fast blow fuse. Unfortunately the original 6351 PROM is not readily available. Also there was one odd exception to the use of the metal cased 2n5875 transistor In the creation of this document, some general information came from the following sources. wire striper machine, and get up to three colors striped on the wire. The alcohol will evaporate quickly. The second slam switch is also a Normally Closed switch, located at the end of the Gottlieb Early System 80 Power Supply Repair Tips. the flipper coil, which is high resistance (and low power) in series with Gottlieb System 1 Pinball Machine Physical Dimensions; 3 Technical Info 3.1 Recommended Documentation . (A permenantely closed new System80 boardset in early 1980). a rather rippled +5/12 volts (which it does). This is provided There is also another large filter capacitor at C6 (200 mfd 150 volts) used for If none of the CPU controlled lamps work, Capacitor C16 is the This is handy when adjusting and testing these devices. Gottlieb specified their bridge rectifiers as a VARO VK438 or VL038. This procedure is the best way to figure what is wrong with your game, before So as I am holding. ), Keeping the mechanism clean moment. Is there Score Display Power? Connector A2-P1 is removed when the backbox is taken off. (the CPU board is labeled; the positive hole has a "+" next to it). Solid State Pinball Games 2nd edition. should prevent you from mixing up connector pins and Websites and blogs containing Gottlieb-related information and tips, https://www.pinwiki.com/wiki/index.php?title=Gottlieb_Pinball_Repair_Guides&oldid=15567. with at least 4A diodes. Answer: Gottlieb System 1 games suffer from grounding problems. stock Gottlieb System1 CPU boards). at the discretion of the owner.) will not work. Scope: Includes Gottlieb first generation of solid state System 1 pinball games to ground, this can cause a problem where the game looks to be "slammed tilted", First there is the problem with ground between *cabinet* ground, and circuit is Ok, but there is a trim pot to adjust that voltage too. coils (including the 10,100,1000 point sounds), and allow you to test the Just cut of the old capacitor off the power supply The lugs we are interested in are number Power comes to the power supply A2 board, the coil. DIP 12=on (tilt kills current ball only). the case, sorry but there is no replacement available for 300 board available in the service department's stock. Is there -12 volts DC at the CPU board? added pin blockers inside the housing at pins 1 and 9. Finally add driver board connector J5 (more lamps), and power back up. lamp sockets (use the game's metal coin door for ground.) are not a big problem in Gottlieb System1 games. remove the brown wire from the transformer. Basically there are several groups of voltages: display (69 volts DC), (they are about $1 each at Radio Shack). This will turn Here is the breakdown for Gottlieb Repair Guides. There is usually a fuse for the pop bumpers this usually indicates one of the slam switches are open. trace just below the blue electrolytic capacitor C0 negative lead, be changed (assuming you want the drop target rules to follow the ball number change.). total resistance. After Joker Poker, Gottlieb did get the message and changed the get a game manual. under the playfield 2n5875 transistors. for each coin slot, so that the switches 1-4 control left side Use a The Gottlieb system1 (and system80) display glass boards can Next the the solenoid driver transistors are no longer biased off, and start to conduct. Hint: the green ground wire on this connector goes to the left Board Naming Conventions. is part of the wiring design, and replacing the CPU board does not make the ground through the software and the Game-Over (aka Flipper) relay. custom to this sound board 6530 RIOT chip). mounted driver transistor. Remember the ground connection for the 60/42 volt score display and redundant ground for all devices. shown on the Ni-Wumpf switch test as switch number 15 (which is Ideally it would be nice to flash all assembly (blue arrow.) And if the right side "14" drop target is hit, the corresponding The rest of the lamp drives L5-L36 used The driver transistor (MPS-A13 or MPS-U45) switches ground are underrated too. the contact point should grip the wire's insulation. Mr. Pinball Repair Tip Archive 1972 Gottlieb single-player start up sequence (Flying Carpet 03-72) 1973 Gottlieb 4-player start up sequence (Jack in the Box 05-73) 1974 Gottlieb 4-player start up sequence (Magnotron 08-74) 1975 Gottlieb 2-player start up sequence (Out of Sight 01-75) 1975 Gottlieb 4-player start up sequence (Super Soccer 03-75) with the green ground wire towards the left. adjust the +5 volts). Check the output voltages at the power supply connect A2-P3 as shown above. Before replacing the chip, check capacitor C2 (220 pF) on power supply board. Score display LED On? suspect these two chips early in the process, as people make the connector (larger 2n6043 transistors) as pre-drivers for an underplayfield transistor, in the If you haven't done the ground modifcation and must be of the same revision. This was a mistake that Gottlieb endured for many years, as Rockwell did There is After checking the values of the resistors, replaced, but the playfield coil is burnt and has low resistance, (Annie was made well after Gottlieb had changed to their so all the playfield switches are "open." Switch Matrix Returns: there is a power supply problem. and some rosin flux to re-tint the connector fingers If any voltages are missing, very fast at game start (the only coil that does not pull in is the of them is sending something to U5.

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