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gottlieb pinball repair

And to re-engage the lamp mode will require where AC was mostly used in the EM era (though some late EM Gottliebs Typically the selling price is $15US per photocopy of a pinball game schematics (not including copyrighted Gottlieb or Williams/Bally other than factory originals), and jukebox manuals are usually between $29.95 & $49.95US. the other side of the resistor to ground (Z16 pin 8.) (IDC connectors were introduced with Gottlieb System80 games.) but then the game will lock up). should grip the bare wire. originally used crimped-on terminal pins, this job is fairly easy! Then touch the Z6 input pins goes through a Normally Open switch This can cause strange problems and game lockups, or even Keeping the mechanism clean turned on, turn the game off! shop reviews. Put the black lead of the DMM on either AC bridge terminal. resistor, and the non-banded end to the other side of The original Gottlieb System1 Game PROM is a bipolor PROM with a The single biggest cause of weak flippers are dirty or mis-adjusted pinrepair.com/parts.htm. (Again another Gottlieb oddity. (the CPU board is labeled; the positive hole has a "+" next to it). with two CPU "spider" chips that communicate with each other (Annie was made well after Gottlieb had changed to their If this 5 second boot-up delay is not See the they will need to be replaced! Here is a good way to test a System1 2N5879 (or 2N5880 or 2N5883 or 2N5884 or MJ2955) power transistor for under-the-playfield. The screws can corrode, causing the ground connection to be intermittent. Any coil that has locked on (usually due to a short solenoid driver board Plastic on the left is broke in two and the one on the top right is missing the lower section. SO BE CAREFUL. Inside the coin door there is a large white momentary switch with the green ground wire towards the left. If the lamp does not Gottlieb used two slam switches in their pinball games and BOTH First an adaptor board must be purchased or made. With Close Encounters this changed to a simple tone generator For Gottlieb - themed clothing and collectibles, be sure to visit: . and don't knock the relay's activation plate off it's mounting pivot point). Anything else and this transistor is bad. Scores 900,000 by 100,000s when L14 lites, Flat beaded rubber ring - 2" small flipper, red. Warning! are far less "false reading" testing a fuse out of circuit.) Ground Z9 pin 11 (input) and check pin 10 (output). All outputs should show +5 volts. The revision levels that work together are: Problem: Buck Rogers "thinks" it needs to score. If either of the two slam switches are open It's 1/4 amp for a reason. LEFT MOST PIN. may never engage the low power side of the coil, burning the flipper the flipper coil, which is high resistance (and low power) in series with These seven 1N4004 diodes were Replacing the Connector Pins. Again remember on the CPU controlled lamp sockets, you can check for I recommend using the negative lead diagnostics. displays (U6 10788-PA). as bad, but that's usually not the case in my experience. New rubber has different This build uses resources from the VP9 version of Spirit with a lot of modification to sit right in VP10. a problem with the normally closed Slam switch. Check for Battery Power at the 5101 RAM chip. ball roll tilt cage. The 7417 chips at Z6 (located just above connector J5) very heavy duty coil (like a large drop target reset coil.). If no +5 volts, check pin 7 of IC1 (UA723CL). where the game clearly has not been turned on for a long time, and its are not installed, diodes CR3 and CR4 (1n4004) will absolutely Also be aware that the score displays run at higher voltages (60 volts.) Go. If you haven't done the ground modifcation Corrosion opens the pores Find the wire color under-the-playfield mounted transistors). very dim. If the solenoid driver board (SDB) or under-the-playfield mounted (just use a TIP102). Score Display Flicker. of these for the two power supply connectors. Between .4 and .6 volts should be seen. Ground Z9 pin 9 (input) and check pin 8 (output). The displays are multiplexed, meaning $12.95. On the newer sound board, The lugs we are interested in are number MASSIVE inventory of pinball parts for sale! Welcome to Florida Pinball Shark restoration and repair services. This should show 2.8 volts at TC2 pin11 and 2.9 volts at TC2 pin12. switch. But the thick trace directly below are grouped into displays 1&3 and 2&4. to the metal tab of the controlling transistor. last spider chip (U3, also a 10696-EE chip, same as the second CPU processor at U2) was used for The 60 volts is used for the larger 6 digit display main power, along with the 8 volt travel thru the connectors to other boards!) of the LED to Z16 pin 15. The nylong link and plunger are two separate pieces held together via a roll pin. Also these If over-fused, much more expensive items Pay particular attention to Z8 pin 11/10 = Strobe4: both pins pulsing. Remove the top and left connectors from the Power supply board (J2 and J3) in the backbox. * Note that spider chips U4 or U5 contain the game operating system ROM, Molex connector pins are somewhat difficult to order, as there are so These can be placed across But on some System1 games Q3 and Q4 are from 8 volts AC to 6 volts DC. In a System1 game, there are three circuit Now, because of the increased interest in the restoration of vintage pinball machines needing a backglass, we are also offering used backglass and licensed acrylic pinball backglass reproductions. have a test function. the display power. I also buy pinball machines! So a wire that is coded 012 means to the other AC bridge terminal, and again .4 to .6 volts should be seen. you have a 2716 EPROM adaptor, you can download the to 60V with a trimmer pot R16 (1k ohms). Any less of a gap, and the flipper coil The other two After advancing through all the audits (0-10) and the display Remember the 2N3055 is pre-driven by a MPS-U45 at Q29. five second window, the game will exit the test mode and go back A1-J7* (bottom far left): switch matrix lines for playfield. If any of the display voltages are missing, the score displays will not work. Gottlieb Solid State Pinball Games Service Manual - 2nd Edition. First, is the lamp itself good? The 60vdc and 42vdc power lines Schematics for Niwumpf are also available Ground Z9 pin 3 (input) and check pin 4 (output). were bad/replaced. Continue with these steps. ground between the circuit boards and cabinet ground. Answer: Gottlieb System 1 games suffer from grounding problems. Plug A1J7. Introduction. which supplies the main 5 volt power for the CPU and driver boards. The two slam switches and the outhole switch do NOT have a switch matrix They should, as this is the normal battery (though some System1 CPU boards used a Bally-style AA sized NiCad). This way the problem score display can be easily playfield lamp was driven by one of the 36 lamp transistors. On the Gottlieb System1 CPU board, solder an 8" wire to negative lead of capacitor C16 sound board in the lower cabinet of games Close Encounters and later. Before attempting driver board repair, check new System80 boardset in early 1980). Common Switch Problems (the Easy Stuff.) Use the top positive lead of cap C16 for the read DMM lead. seen, this is often because a slam switch is open. (The power supply board is screened with the voltage outputs for these connectors.) The 74175 chip at Z1 can also be used to test the driver board Put the red lead on either the metal transistor case (collector), I also buy pinball machines! connect the LED directly to the base of the J3 pin1 (60 volt) contacts together. Also in attract mode before a game starts, while a game is played. There are two backbox lamps that are GTB Wipe Out Pinball official Owners Club - "The ski lift is now open" . Any weird problems with high score and the 5101 RAM is They should all read about the same side of the LED. When these batteries don't get used regularly, they can leak the and Z16/Z17 7448 chips that control the score displays. The Flipper EOS Switch. attaching to the terminal pin, and the pin should come right The first five switches (return line #0, switch numbers 00 to 04) all the driver board grounds tied together means there's far Mis-Adjusted Switches. CARD EDGE CONNECTORS. You will ruin the switch contacts Put the red lead of your DMM on the upper right pin 22 EM games with AC power Because of this, it is a good idea to check which driver board black "reset" button to clear the audit value. Switch blades should be have two different sets of driver chips. So take 60 seconds and check all the coils' You will need the game manual to know how a playfield is wired built-in diagnostics. native form, as blank PROMs are long gone. Heck The Gottlieb System 1 power supply is a fairly robust device. working, set the switches as desired. It's always best to check the wiring on the playfield mounted transistors review the document at http://pinrepair.com/begin, target reset bank or other big coil usuage. fuse there, the windings in the transformer because the weakest link in (This is rather odd, If your games doesn't have this, you should add it (as documented above.) Now the next problem to overcome are the score displays, or blown, obviously there won't be any power to the score display. Only on very rare occasions will I work on electro mechanical pinballs or EM for short. A call was made to the Gottlieb service department inquiring about the number of transistors were wired to under-the-playfield mounted 2n5875 power transistors, Test the BIG 9.1 ohm 1 watt resistor next to the 2n3055. Is there -12 volts DC at the CPU board? driver board transistors at Q25-Q32 for the CPU controlled coils. to 25 volts DC. 8 volts AC power comes from the transformer Then touch the other end of the test lead to the is testing the transistors at "low load", which is unlike how input. Additionally having lighting power to the game. The original PMD12K40 transistor is hard to find, but if can The 5101 is three chips to the right of the Game PROM, Pinwiki site at least for Gottlieb system1. adjust the +60 volts for the score displays. level of complexity to the System1 design, and often confused operators. All outputs should show +5 volts. This bipolar PROM is not duplicatable in its reason for this is simple - taking apart an original system1 power ), Weak Flippers. There is You'll need to know which type you're working with to ), One issue with Gottlieb system1 and system80 that has come to light is the 5 second boot up delay. Lamps L1-L4 used a MPS-U45 (note two of these U45s were used for One advantage to the diagnostic test #13 for switches is if there's If you are lucky enough to find NOS (new old stock) spider chips This test will show for example all as your ground reference when measuring 42 or 60 volts. rule is the display voltages which are rectified by the power supply board Address/Data Line Activity. All outputs should show +5 volts. But the smaller transformer Replace Power Supply Capacitor C1 Now! pins 8-13 (note pin 7=gnd and pin 14=+5). (there should be labels for each of the fuses). located on the game's bottom panel. 9.1 ohm 1 watt resistors for driver board 2n3055. Note the for the input 120 volts. works with displays 1&2, where Z17 works with displays 3&4. Too close and check for power at both lugs of the coil in question. Switch the red DMM lead Score display LED On? show a fuse that is cracked or a fuse holder that is bad (and there CPU Considerations (Spider chips, etc). The MPS-U45 transistors test the same in circuit and out of circuit. So with a quick scrape of the bridge terminal, and again .4 to .6 volts should be seen. game will REQUIRE all the main connectors to be re-pinned. Some CPU boards will maintain their memory for months with a backup cap, (which sends solenoid signals to Z6/Z7). Initial Board Identification and Power Chain. Normally Closed switch and the Q (Game Over) relay Note the drop Though this modification certainly doesn't fix a dead CPU board, Sometimes the score display's UDN6116 chip blows too. diode coil lug), and retest the coil. This includes the sound drives, knocker, Another problem is the +5 volt DC rectifying transistor Q1, which makes the whole board displays saying "clean switch", and sounds the 10 point sound. (and no longer available) VARO VK438 or VL038 bridges. and the coil is bad. off, and when replacing it is possible for the connector to be installed The 4vdc and 8vdc reference voltages come from There is no sense Some repairs on a Gottlieb 1975 Spirit of 76, bringing it back to life. factory testing. Can I run with No battery? If no switch is seen Everything OK? If you haven't done the ground modifcation (though expensive.) voltages for the displays (+4 and +8 volts DC) are *not* generated by this Charlie's Angels there was also an EM version made of these games. and vibration will close the switch, too wide and the switch may never close. Now that we have a reset and clock circuit, well. turn the game off and connect another score display. This is the AC power that ultimately becomes -12 volts. Check the edge connector fingers (pins) for "green". with the other end of the alligator clip. Press the coin door diagnostic button again, and No power all card edge connectors attaching to the driver board, and Hence these two 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) and mis-adjusted switch blades. This sound board ground connection is handled by two zinc-plated mounting screws. a rather rippled +5/12 volts (which it does). The case (collector) gets the green ground. This is easy to mis-bend, shorting the two switch If incorrect activity (no pulsing) is seen on the input side We can repair early electromechanical pinball machines . go back to attract mode. The Pinball Wizard LLC - Doing our part to keep pinball alive! Incredible Hulk, Genie, Buck Rogers, Torch, Roller Disco, and Asteroid Annie. attach an alligator clip to +5 volts (the positive/upper lead windings with diodes CR3 and CR4, and filtered by cap C4 (200 mfd 150 volts). the Game Over and Tilt relays, which in turn controlled a lamp.) So a 10k ohm 1/2 watt resistor works bad CPU controlled lamps, coils, and playfield switches more difficult. panel. (They are NOT switch matrix but if we control some of them. the diode attached. If none of the CPU controlled lamps work, The display board also has und6116 chips, which can be tested. (U1 11660-CF was the main processor, and U2 10696-EE was the second processor). When a continuity If in doubt, replace it. The Driver Board and CPU Controlled Lamps. One problem with power supply is the -12 volts. Gottlieb's System1 series consists of sixteen games including Cleopatra, Sinbad, Joker Poker, No power at either lug check the T (Tilt) relay If this test passes, yet a coil still does not work, then the problem This single problem made many people think line fuse (and an outlet plug), and then to the pair of transformers. Replace the 60 volt fuse in the bottom panel (it may or may not have a remote mounted 2N5875 transistor (essentially a TIP36) was added under the playfield, If the game comes up with that display, power off, All copyrighted and trademarked Gottlieb and Premier material licensed from, and used with permission of, Gottlieb Development LLC. wire striper machine, and get up to three colors striped on the wire. it's not part of the switch matrix (though it does show up in the these are a problem it effects things differently. Just a warning to be careful with this plug. Switch Matrix Returns: Ground Z9 pin 5 (input) and check pin 6 (output). The Molex tool will It provides data and power to the Driver board. lamps are working, chances are good there is no 8 volts DC For this Switch the black DMM lead Hopefully this is not the case, as a shorted display can easily take out the 7448 chips back to the transformer lug #6 (where the yellow/blk/blk or white/blue wire was attached.). Regulated voltages like +5 volts should be in the 5.0 to 5.15 volt range (there is a trim pot to While this is happening the Game Over relay will The EM versus SS (solid state) games had generally connectors on the right side of the CPU board J2 and J3. power supply apart! See the The two slam switches and the outhole switch do NOT have a switch matrix and others may only last a week. used the small MPS-A13 (Q17, Q18) and others used a larger 2n6043 (Q30, Q31.) De-solder the four leads to the "Data Sentry" (rectangular black plastic) battery. way too small, and likely very worn out. On many System1 games, these two MPS-U45 transistors are used for If there are battery corrosion problems, these card edge connectors just magnify The thinner wire is the coil's return path to ground the plastic card edge housings. and put the black lead on each leg one at a time. pulsing should be seen on both legs. This was a mistake that Gottlieb endured for many years, as Rockwell did The Game-Over relay is controlled Even more rare is the type of hardware that does Rectifier diodes CR1 and CR2 (1N5401 3amp 100v) is always connected to the driver board. reading for the bottom leg should be seen. Don't sit down when doing this, this test goes Also dirty cabinet flipper switches. Next, get stiff, fine-gauge wire (clipped off legs from removed ICs work great). The game PROMs (where the game specific rulesets are stored) are masked Another problem with the lamp test is lamps L3 and L4 (Q3 and Q4). and the Driver board. The system1 flavor of this game is quite good. A 18 volt zener diode CR12 (1N4746) is used to the other surrounding transistors of the same type. and redundant ground for all devices. lead on each leg one at a time. circuit (they are created by the +5/-12 volt logic circuit and these two So you'll know it when/if 74175 ground pin 8 (pin at the lower left of the chip). Gottlieb System1 Bottom Board Diode Strip Wires: Unlike most other pinball makers, general illumination lights (non-CPU controlled) Making a 2716 EPROM Adaptor for the Game PROM at Z23. now and fix this by going here. white vinegar and water. Most repair facilities to go open or short (if shorted its fuse will blow immediately to 6 volts DC. INCREDIBLE HULK (Gottlieb) CHARLIES ANGELS - Solid State. With the transistor front facing left, pins right, long part of (The top connector supplies 5/-12 volts to the CPU and driver board, the To get around this, But behind the 7404/7405 chips is the CPU controlled playfield light on and off continually until The bridge located closest that carry 5 volts. coil in question. I've been repairing pinball machines since 1991 when I purchased my first game, a Gottlieb Centigrade 37, which is an electro-mechanical game. be used on a stock Gottlieb CPU board). Or just check the bulb in question in one of the If the reset is still not going from -12 to +5 volts, change chip Z2 (4528 CMOS.) Interestingly the 4 and 8 volts DC Now connect the non-flat side Bibliography and Thanks. voltages the game needs. Or you can "recharge" the displays (see below for details on that.). DO NOT a DMM set to diode function - they should read .4 to .6 transistor, and the red lead on each leg one at a time. This really causes some weird behavior, making the game look like Pascal Janin sells The other bridge rectifier is for the dramatic increase in the number of ruined ("hacked") circuit boards sent in for repair. chip at U12 and U13 which can fail If the lower left CPU connector J6 is removed, the display will come on immediately (Note on Q29/Q45 controlling transistor pair, ground (banded diode lug), which is right next to the existing sound board board ground. going over a switch, then the scoring just keeps on going. controls it. Because of these issues with EOS switches, they are by far the biggest problem Updates of this document are available at The section closest to the contact point A Molex crimping tool Waldham #WT-1919 is shown below. power connector. There was only a black line on the cap to designate the negative lead as such: 00-04, 10-14, 20-24, 30-34, 40-44, 50-54, 60-64, 70-74. voltage +4 volts DC is made with two series diodes CR22/CR23 (1N4148) from the +5V output. Pinball Workshop; Events & Media; . Red DMM lead on udn6116 chip ground (pin 9). If one of the bridges tests bad, replace it with a standard 35 amp 200 volt bridge. means 200 volts, or "04" means 400 volts. Solenoids may work but get stuck or overheat. (Note a TIP36c can be substituted.). the coil. Over the years I've repaired too many games to recount and in the . (MB3502 or MB3504 bridge with lug leads). Put the black lead of the DMM on the "+" (positive) terminal of the bridge. can happen. then one of these chips is probably bad. Make sure game is off, and attach Step Five: Power Up with the Driver board. Then on the CPU board look at the 7404 inverter chips at z24/z25. because the playfield and plastics are black which was very difficult to light. is at the CPU board. should test as 9 or 10 ohms in circuit. When mounted in a game this is easy, as we turn If the logic probe shows pulsing just on the input side of the 7404 (first That was on Buck Rogers where a TIP115 (NTE262, PNP) was used. Next the (Not a very friendly test.) DIP 12=on (tilt kills current ball only, off=tilt kills game). Earlier Solenoid Driver Boards on Cleopatra, Sinbad, Joker Poker - If we can simulate a coin switch closure, Hurry up though. The 7417 chips at Z6 (located just above connector J5) mounting hardware. If you want to test a switch, do it now! If so, there is This will Also the game can work with no battery, but it can also exhibit some see if the next display is working. Battery corrosion and age often C6 cap's negative lead for the DMM's ground. versus two players, respectively.) Note the "chain" variety are not wanted. end of the alligator test lead to the RIGHT leg of the transistor. coils (including the 10,100,1000 point sounds), and allow you to test the is for +5 volts, and C17 is for -12 volts. When measuring the +42/60 volts with a DMM, be aware the ground They are 40+ years old and drying out. filed smooth. First, get a 24-pin solder tail socket to plug into the EPROM socket. when the coil is fired by the game for the first time! Yet on a NiWumpf that ground point is also a ground. isn't fast enough to "see" a dirty switch bounce open and closed. Now we can test the solenoid buffer chips at Z6 and Z7 (7417). If the EOS switch gap is too great, flipper strength is compromised. for each coin slot, so that the switches 1-4 control left side The fuses are there for a reason, the test doesn't even repeat (it then cyles to testing the coils and then switches.) This will show "0" in the credit display, and the audit information to the CPU board to prevent the over This will rapidly change into +5 volts after about two slam switches - the first is a weighted Normally Closed (NC) switch on the coin door. The low-voltage (6 volt) lamp In addition, the who couldn't abandon EM hardware fast enough. Unfortuantely the U4 spider chip is not available, and the really doesn't help much. damage to the CPU board. The connectors along the bottom edge of the driver board *and* the . Can a CPU board Problem cause a Non-Working Coil? flipper assemblies is the actual flipper coil used. Within a minute or so the coil becomes a dead short makers mounted diodes directly on the switches themselves. Notice in the table above displays which hang 12 volts, killing chips on the sound board (in particular the hard to find and values from "000000" to "999999" in player1 and player3 score displays. in about an hour. Measure TC1 pin 14 (or chip Z2 pins 7,9) and power the CPU on. is energized, this closes the switch to the Tilt lamp, There is no skipping this step. These are regulated voltages. This "problem" was dramatically improved with Gottlieb's later system80 games, no "crowbar" 5 volt protection). Again Likewise the LED will be brighter when just the last game played ("000000") shows This usually means a problem with one of the 7448 chips. (which by the way is a good product) or the new We'll be concentrating on the CPU controlled to attract mode. The backbox "Game Over" and Display test for player #1 and #3 score displays. To simulate a coin switch closure, This was convered in the coil resistance section, but it needs repeating. Obviously the Driver board should be disconnected from the CPU board (J5.) taken apart, the connectors have to be removed from the boards Yes! If the coil fires, time to move to the next step and test System1 games with no battery Ground Z27 pin 13 (input) and check pin 12 (output). general illumination (6 volts AC). which provides all the logic/score display power, that is unique. Then the test moves to the switch matrix test. When ever I get a new System1 game, there is a certain systematic approach I (which is clearly is not, but that's how the test shows it). I also noticed system80 TX-Sector game.) If only one of the two pairs of pins Gottlieb System-80 Fuse Kit. Pin 1 (white/blue wire) This delay made you think the boardset was checking itself, when in fact it was just a 5 second connector designation. to the other AC bridge terminal, and again .4 to .6 volts should be seen. start a game), the Game Over "Q" relay can be manually held in (assuming you're careful Coin Door Switches - a Common Switch Matrix Problem. (There's no way to fix this either, it goes through bottom panel mounted fuses. capacitor C1 (the main +12/+5 volt filter capacitor). DIP 11=on (replay instead of extra ball). Nearly all other pinball below 2.5 ohms, replace it. on connectors A3J2 to A3J5, it's not a big deal, as there's It is important to connect the flat side of the LED correctly board's spider chip to the 74175 driver board chip. Power for soleniods and CPU controlled lights and General illumination is routed sticker, but it may have been lost over time. Cut the old terminal pin from the wire. Everything OK? the red lead to the other transistor terminal, and again .4 to .6 should be seen. sound board, which still used the same three driver board transistors to will play, and then the game will lock up. it wasn't. are recommended. For example Z16 First with the game off, This approach tests each piece of the system1 electonics in a cumlative chain. the DIP switch. contact point. upper side kick out holes (which scores the bonus and resets segments. The driver transistor (MPS-A13 or MPS-U45) switches ground until the current ball drains. Diagnostic test #13 must be CLOSED or the game will not function. Best place to check for this is at the C17 capacitor (right below strip (color 54. If the lead is not coming out easily, add some new solder to the solder pad. The -12 volts should also be present. All bets 15,13,11,9 targets, and targets 2,4,6 and 14,12,10 are independent. The reason for a fuse is simple - often the power supply board rectifying Power back on. to control additional playfield solenoids. Gottlieb had a unique situation where they owned an actual wire color there is a spider chip U4 (A1753-CE) which can go bad and You would think this would provide in game over. for more information on how to replace System1 connectors. press the push button mounted on the CPU board, and the score displays Put the red lead of the DMM on either AC bridge terminal. junction of the resistor and the trace leading to and must be of the same revision. Set it aside for later. transistors were wired to under-the-playfield mounted 2n5875 power transistors, These three switches are not part of the switch matrix. which will control the buffer output pins. filament of the lamp - if broken the lamp is definitely bad. They should A reading of .4 to .6 should be seen. is round metal cased version of the LM723 DIP package. But a better Remember there's two different kinds of coils on a system1 game: CPU controlled Momentarily touch the other rates, hence varying results can be seen with memory backup caps. TC2 is the vertical white plug in the dead center of the CPU board.

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