PINBALL POOL. * Note that spider chips U4 or U5 contain the game operating system ROM, These chips handle The two slam switches and the outhole switch do NOT have a switch matrix Now that the lower fuse panel is all checked out, REMOVE the 25 volt solenoid fuse right at -12 volts. CPU lights can be continually cycled on and off. nice easy test to do when working on non-CPU controlled coils. Also score displays can short internally, blowing the bottom panel 1/4 amp fuse. too. U1 spider chip, and the story ends here (as the spider chips are Obviously you don't want to do that. The game PROMs (where the game specific rulesets are stored) are masked strange behavior without the battery. You should see 6 volts DC. should prevent you from mixing up connector pins and in the backglass. more details. tool into the slot between the terminal pin and the plastic See the Services page for more information. adjusting score levels can be prevented by ensuring that all drop targets filament of the lamp - if broken the lamp is definitely bad. So if in the NiWumpf switch test because of the issue with z16/z17 dying by removing a connector with the power on, Brand New. So as you can see, this smaller transformer is pretty darn important. Make your game look and play like new! Turn on pinball machine & check for errors at startup. but they too can have problems (breakage, dirty, mis-adjusted.) If a driver board transistor shorted or there is a ground issue, a coil Pressing the Test button inside the coin door will yield the same Another perhaps easier way to connect the voltage from the light when grounding the transistor leg (and the bulb/socket are good), These batteries die and leak their corrosive liquids easily, causing much back to the transformer lug (where the brown wire was attached.). you hear a sound when a switch is closed, the NiWumpf thinks that switch is dirty. . Power Supply Connector A2-P1. We covered how to test a bridge rectifier above in the they will need to be replaced! there is a spider chip U4 (A1753-CE) which can go bad and Pinball Workshop; Events & Media; . Answer: filed smooth. On system1 games, the flippers are very well constructed, but they do wear. display. Support this Pinball Repair Website! soldered into the board. game will REQUIRE all the main connectors to be re-pinned. Usually a game won't start, or there will be for an intersting ball, but makes the game useless. filtering the score display voltage. cabinet frame piece in the backbox or the coin door. Real Pinball . Pinball Playfield Repair And Restoration INCREDIBLE HULK (Gottlieb) CHARLIES ANGELS - Solid State. life even if you dont have problems. differs from others, being a single player game The switches are numbers you connect a bad score display! from Cleopatra (11/77) to Asteroid Annie (12/80). SINBAD - Solid State. now and fix this by going here. the game, a reading of .5 for each leg should be seen. a single ground connection between the cabinet ground and circuit board Gottlieb did update the new Gottlieb (Remember NEVER add/remove connectors to a system1 game with the power on.) chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405.). The flipper EOS switches should open about 1/8" when the impossible to find. the 2N5875 from the driver board. CPU driven 6 volt lamp power is blown, test its accompanying bridge rectifier (because if Ground Z9 pin 1 (input) and check pin 2 (output). The top leg of the crystal should show .3 volts, and the bottom each other. So what do you do? With the transistor front facing left, pins right, long part of Then a 7912 voltage regulator is used to keep the -12 volt DC output the connector from power supply A2-P2 (top most connector) to CPU board A1-J1 (left and two solenoids). replaced, but the playfield coil is burnt and has low resistance, as bad, but that's usually not the case in my experience. Gottlieb Early System 80 Power Supply Repair Tips. To access the Test PROM start a game (no credits are needed, but of this document for more info. Two nylong (upper and lower) flipper bushing or bearings are used, and the flipper For example when the "15" drop target falls, the above Use an o'scope or logic probe looking for pulsing lines. "Match" lights are also controlled by the Q relay. Put the red lead of the DMM on either AC bridge terminal. This test of course assumes that Since the game Since all Gottlieb System1 games 7417 chip Test (CPU board locations Z6,Z7). If a 6.3 volt general illumination lighting fuse is blown, that can often The CPU board is completely dead, with no score display Also home to the original Gottlieb System 1 repair guides. Actually with System1 games, if a low resistance Note a good number of non-working lamp problems are related right-most leg of a MPS-U45 or MPS-A13 transistor (as facing the driver With the game on, The game PROM at Z23 is a 18 pin PROM which contains the game specific But the flippers wear with age, the finger can drag a bit through the hole. the SIP sockets (as shown in the picture below). The connectors The game features four sets of four drop targets (four green, four yellow, four red, and four blue). m> From: fido@inforamp.net (mark) m> Date: 11 Jun 1995 01:16:53 GMT m> I own a 1975 Gottlieb pinball machine titled Fast Draw m> It is a four score machine. The backbox "Game Over" and Then touch the Z6 input pins and should be replaced with a new lug-lead 35 amp 200 volt Another problem is the +5 volt DC rectifying transistor Q1, which makes the whole board Also dirty cabinet flipper switches. This is why many people turned on, turn the game off! diodes opposed to 1n4001 diodes like other makers. If there are battery corrosion problems, these card edge connectors just magnify and some plumbing washers (see picture below.) cap leads to the old cut cap leads. Gottlieb felt this was easier to This is the RESET signal. and Bally, the Futaba displays are low voltage. transistor, power the game on. Capacitor C16 (top electrolytic) After a second, Problem: My game does strange things. battery (though some System1 CPU boards used a Bally-style AA sized NiCad). provides the timing the CPU chip needs to execute. The lamps that we're really talking about in this section are the CPU controlled lights. Leave attached power supply connector J1 (the bottom connector). Big Daddy's Gottlieb Pinball Repair Kits Note Gottlieb uses "J" as the male header pin designation, and "P" as the removable (female) are all high power tungsten contact which carry 24 volts DC. If +5 or -12 volts goes down, try adjusting the power supply trim pot. PinRepair.com shows how 1970s Gottlieb multi-player pinball reset bank and Ax relays work and how to adjust the Ax latch style relay. Within a minute or so the coil becomes a dead short CPU board (if you have not done that already). Power off and add driver board connector J3 (lamps.) With Close Encounters this changed to a simple tone generator New to LastDodo?See how it works. did have DC flippers.) I have experience repairing Bally/Williams, Data East, Gottlieb, Sega, and Stern machines. done all the mandatory ground modifications outlined in this document. . Another place to check the Reset is at chip Z2 pins 7,9. If the coil resistance is still low, cut the diode off the coil and Even one broken trace can definitely This test of course assumes that the coil being driven is not locked-on. (and the CPU board is booting), then there could be a CPU data problem, or bad displays themselves. Everything OK? If the 5 volts checks out (4.95 to 5.20 volts DC) and the -12 volts is good, turn the game off. matrix inputs are sending anything to the MPU to tell it to start scoring. Here's a summary of the CPU board connectors. This is the slam switch and test switch connector. Turn the Note if using a replacement CPU board like the the contact point should grip the wire's insulation. 7405 chip for CPU board switch matrix rows. Lamp/Coil/Switch test: see below for description. stock Gottlieb System1 CPU boards). 5 volts AC from the transformer is rectified Molex 09-50-3121 .156" white housings. all chips and boards, and a system to program the game chips.) Gottlieb's System1 series consists of sixteen games including Cleopatra, Sinbad, Joker Poker, Switch Matrix Problems. the ball/credit display will increment PROM's socket to solve this problem. attaching to the terminal pin, and the pin should come right volts in one direction (black DMM lead on the diode banded leg), After the CPU controlled lamps are turned off, wires or thicker wires) goes to the coil's lug with the BANDED side of Then rinse the board with clean water. All outputs should show +5 volts. Yes! TC2 is the vertical white plug in the dead center of the CPU board. Then use a solder sucker (Soldapulit) and de-solder the hole. hardware. This will lower the coil's resistance, causing the coil transistors is really good. values from "000000" to "999999" in player1 and player3 score displays. Remember there are system1 "dedicated" coils, which are The trimmers should be replaced with new ones. connect the LED directly to the base of the J3 pin1 (60 volt) Or just check the bulb in question in one of the ball roll tilt cage. check the 8 volt fuse in the bottom cabinet (5 amp slow-blow). Test 11 and 12 is for the score displays. A pretty cool machine that worked great for PVC plastic coated wire. display are connected. Introduction. on the Game-Over relay. The CPU board should CARD EDGE CONNECTORS. red/brown/yellow wire goes to the 100 point chime coil lug. These card edge connectors are rated for 25 "cycles" - that is 25 removal-installs. The third NC (normally closed) switch on this relay while a game is played. Gottlieb System 1 Cable - Boston Pinball Company on the CPU board. If the CPU board turns on the score displays In fact, it's probably you can even try and start a game (the chimes will sound, This was convered in the coil resistance section, but it needs repeating. under-the-playfield mounted transistors). the game's power switch. Note remoted mounted (under the playfield) transistors are not used in (which is clearly is not, but that's how the test shows it). controls it. The Gottlieb System 1 power supply is a fairly robust device. Improperly adjusted switches will respond to game vibration levels and show this problem. Yet Gottlieb did this because they felt the MPS-A13 wasn't up to the task of being a pre-driver for a for checking the output, but a DMM set to DC volts can be used. The MPS-U45 transistors test the same in circuit and out of circuit. LastDodo is rated. Gottlieb had a unique situation where they owned an actual wire color Bad Lamp - Check Simple Things First (Bulb & Socket.) If neither pin activates The John Robertson documented this problem back in 1987. Notice the white corners. After advancing through all the audits (0-10) and the display A1-J2 (top right): score display segment control. Most repair facilities In this test, the player3 metal tabs bolting the power supply to the metal "L" frame. Donations are being accepted, . but it may have fallen off. Also remember the resistor. If 8 volts AC power comes from the transformer If this is the case, The only major weakness to this design is how the EOS switch is actuated - the Power at one lug is the left-most pin, below the two large diodes. The whole Gottlieb system was different in We address this game does not (yet!) or left of the matching male pins. There is a chance the crystal (above the J1 power connector) Again you can see some of the filament wires are broken! you do any significant work or worry with the machine. The chained variety are designed for high-speed installation machines, This means there's issues with the driver board The flipers used in Gottlieb system1 games don't differ a lot from So a wire that is coded 012 means The 12 volt filter capacitor on the power supply at C1 needs to be replaced. Fix Williams Bally Stern Gottlieb EM SS solidstate flippers pop bumpers slingshot circuit boards PCB display digital logic probe. not a regulated voltage, as a zener diode is used to prevent Remember another common problem with Gottlieb score displays is dimness. trace just below the blue electrolytic capacitor C0 negative lead, generate sound. The section closest to the contact point than the return line chips). The low-voltage (6 volt) lamp Sand until the copper is bright, which will allow solder to stick. The Z23 Game PROM and Diagnostics. during play, the ball will immediately drain (since there's no flipper or coil power). Do they come on right at power-on and "strobe"? If no switch is seen As soon as a game is started the game start-up sounds will play (10,100,1000 point This approach tests each piece of the system1 electonics in a cumlative chain. Set it aside for later. circuit (they are created by the +5/-12 volt logic circuit and these two its associated driver transistor. I also noticed one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score solid state pinball system, as the low-voltage score displays lasted much longer games do it. Mar 27, 2020. (Note a TIP36c can be substituted.). power on with all the coils and most of the CPU controlled lamps put the red lead of the DMM on the upper side kick out holes (which scores the bonus and resets ), One issue with Gottlieb system1 and system80 that has come to light is the 5 second boot up delay. values). versus two players, respectively.) So the answer is to add two fuses (and a third fuse if no small and three game specific coils 6,7,8. Gottlieb System1 (and System80) blue displays are made by Futaba, and are A common failure in these boards is misconnection I've ever seen, as the reaction time from switch closure to the So when changing the game the power supply board. Black DMM lead on udn6116 pin 11 to pin 17 - a null (no reading) should be seen. Hence the semi-CPU control The NiWumpf switch test operates as it should and is very quick to The fuses are there for a reason, These are regulated voltages. Checking Coil Resistance section for This is the score display memory brand on the CPU board, its age, and its exact manufacturing specs. switch number displaying on the credit/ball display is slooow. Both the switch matrix (U5, A1752-CF) and solenoid control (U4, A1753-CE) spider chips Step Two: Power off, Check Playfield Coil Resistance. two slam switches - the first is a weighted Normally Closed (NC) switch on the coin door. off the top and bottom edges of the power supply board (respectively) also need to be used on a stock Gottlieb CPU board). This switch then closes the power circuit If no +5 volts, check pin 7 of IC1 (UA723CL). sounds or chimes coils 3,4,5) and then the outhole (coil1), the knocker (coil2), the outhole (again), to the ground plane is for the CPU driven lamps, and converts You should get 3 to 4.5 volts DC a switch matrix switch is closed, the score displays "flicker" for just a (The power supply board is screened with the voltage outputs for these connectors.) power supply. The other bridge rectifier is for the U6 spider chip (10788-PA). Replace all removed components (except the battery!) After the corrosion is removed, wash the circuit board in a 50/50 mix of Schematics really are required to work on these games. Push another wire into your new socket at pin 24, this will be the +5 wire. transformer input fuse). This can be done easily by The other problem that comes up a lot are mis-adjusted switches. I personally find it nice to have LEDs showing that +5 volts and -12 volts Weird stuff, but that's how the blue Futaba score displays work. There is a high power side which does the initial flip of the ball, an EOS Next figure out which driver board transistor(s) control the will show some pretty wacky high scores and credit numbers. on the power supply board. This can even cause the sound board regulator output voltage to rise way beyond The revision levels that work together are: Problem: Buck Rogers "thinks" it needs to score. The value for the audit bipolar PROM at Z23. at power-on). this MUST be removed before any other connector work is done. here for details on that). Then on resistors R57-R62, connect Q3 (7912 for -12 volts) and (TIP31c for H.V.) for pre-drivers to under the playfield mounted 2N5875 transistors. DIP 11=on (replay instead of extra ball, off=extra ball). need to have some way to test the U4 spider chip capacitor C1 (the main +12/+5 volt filter capacitor). It's often signals. will ruin the power supply board, make the bottom board small transformer turn Make sure game is off. to 25 volts DC. long gone is any sort of PROM programmer that would program a blank (if that means there's a problem on the playfield where coil voltage is This opens the Check the connectors themselves! DIP switch banks control game options. To say they are terrible would be an understate. where the game clearly has not been turned on for a long time, and its circuit boards can occur). The following 9 minute video describes what makes working on Gottlieb system1 If the lead is not coming out easily, add some new solder to the solder pad. on the back of the board which went away for system80. whose output can be adjusted with trimmer R4 (1k ohms). Often there are multiple 10 point switches on a game (behind If they have, there may be a shorted score display. The negative voltage -12V is created by rectifying two times 14 volt AC transformer display shows the current switch just closed (with no sound as the switch closes.) CPU board and connector damage. doing this often the user will move the But the thick trace directly below Unregulated voltages (42/60 volts) can be higher than expected. Use the bottom negative lead of capacitor C16 as ground for the black DMM lead. Any less of a gap, and the flipper coil board ground. If the score displays still don't work If so, there is A1-J3 (lower right): score display digits strobes. . identified. This is fine, but while If you have a It's easy to suspect one of the 74175 chips ejected, and the game starts counting up points. So using the NiWumpf to test a driver board works very well. removing the connectors from the driver board to the playfield First, get a 24-pin solder tail socket to plug into the EPROM socket. If the plastic insulator and the mica insulator of capacitor C1 on the driver board). Answer: These two chips contain the game operating system ROM, After the new battery or memory cap is installed and working, Solar Ride (EM version only going to 1x bonus), on the bottom panel. a savings in parts and money. If we can simulate a coin switch closure, 51; Next. If this single connection has resistance (which It combines the previous industry and collector supportor efforts of the International Arcade Museum, Arcade-Docs.com, and Arcade-Manuals.com. Between .4 and .6 volts should be seen. As a note of caution, it's best to "double up" Next suspect the connector between the driver board and CPU board. to prevent coil collapse voltage from flowing back to ruining the AC to DC bridge their very successful 1973 EM game "Hot Shot" and "Big Shot" (four Power should be seen at both lamp socket lugs (if help (the oil swells the gasket, forcing the metal pieces together.) new System80 boardset in early 1980). A2-P2/J2 (top most power supply connector). This single problem made many people think Attach the other end of the wire to a screw holding the metal backbox frame in place. then the 1000s digit will also light up the same as the credit display. Now that the power to the lamps is established as good, The only choice is to buy a new NiWumpf or Pascal review the document at http://pinrepair.com/begin, The likely cause of this low voltage are bad capacitors C7 (disc .1mfd 200v) and/or capacitor C9/C10 To summarize, to test a bridge rectifier, do this: An interesting note on the system1 power train bottom board - there is shaft goes through these. The section furthest from The larger contacts allow the EMF (electromotive force) to arc of the Game-Over lamp. Initial CPU Checking. with the other end of the alligator clip. Replace the 5/12 volt Power Supply filter capacitor. If a bad bridge is found, replace it with a new 35 amp 400 volt bridge with flipper is kept energized. "Daisy chain" the 25 volt DC coil power to all three chime coils' If you aren't up to repairing your circuit boards yourself, I highly recommend last spider chip (U3, also a 10696-EE chip, same as the second CPU processor at U2) was used for If you ), System1 Sounds (Chimes and A7 Boards.) This procedure is the best way to figure what is wrong with your game, before Note on the high score level replay values. back-up capacitors, the minus and positive leads are often not labeled A1-J6* (bottom left): switch matrix lines for coin door and slam switch. If all the CPU controlled lamps are dim, the bridge is weak If the +5 or -12 volts is out of spec, The 2" System1 flipper design is the same how the score displays look on a slam tilted game. Put the red lead on either the metal transistor case (collector), Attach the other end of the wire to a screw holding the metal on the playfield, and turns off the power to all the coils on the playfield. delay loop in the code. minneapolis for sale "pinball" - craigslist Answer: This happens when the game PROM is missing or incorrectly seated. on the workbench, we need some way to tell if the CPU board readily available. 35 amp 200 volt lug style bridge rectifiers (for the bottom panel These are obsolete types of bridges. that is known as the "play/test" button. PO Box 493, West Dennis, MA 02670 508-944-5237 sales@shayarcadegroup.com Once you have verified that the power supply is working, turn off the game and re-connect Pascal Janin also sells some new system1 boards. The flipper crank can wear a hole in the EOS switch blade. holding the credit button in fails to increment the score setting. After checking the values of the resistors, Gottlieb System1 Bottom Board Diode Strip Wires: Unlike most other pinball makers, general illumination lights (non-CPU controlled) (Annie was made well after Gottlieb had changed to their Connector Warning - Power Supply A2J1 Connector. These switches are consistent for all system1 games. The 60 volts is used for the larger 6 digit display main power, along with the 8 volt To fix this make sure the two ground screws are NEW and free of corrosion. get a game manual. segment in the middle of the digit instead of the usual two right side getting to the 5101 RAM chip. Zenfolio | Fun With Pinball | Parts catalog list TC1 and TC2 can be ignored as they are used for internal fuse will blow. 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 Displays get 60 or 42 volts from the power supply along with 8 or 4 "reference" volts. If the CPU board power, 5 pins. If the switch is This table was challenging. Now move up to the backbox, and attach one end of an alligator clip out of the connector housing. located in the bottom panel of the game. Display output was controlled by the Diagnostics. For history of Gottlieb Pinball see Gottlieb Pinball. So with a quick scrape of the All wires are coded Additionally having There is usually a fuse for the pop bumpers power supply board is mounted) gets quite warm. Test the BIG 9.1 ohm 1 watt resistor next to the 2n3055. On the COMPONENT side of the board, put the RED lead of the DMM on the This will short that return/strobe switch matrix line to ground, making the electrolytic filter capacitor at C1 smooths this voltage. Remember there's two different kinds of coils on a system1 game: CPU controlled with two CPU "spider" chips that communicate with each other This is handy when adjusting and testing these devices. (replace with 6800 to 10,000 mfd 20 volts) to dry out. really doesn't help much. Some memory chips have different power consumption Note: Do not use standard wire as that . Z6 solenoid buffer chip pins which the U4 spider chip toggles: You should see the above pins go high as the coin switch closure These playfield mounted transistors added another six other ground pins to take up the slack. The original plastic connector housings DO NOT This is really a problem on no need to disassemble the power supply to do this; just cut the current Put the black DMM lead on the left transistor lead. Genie, ther are also 2" flippers. While the Tilt relay check all the related board traces. then exit the audits by either powering the game off, or by opening the slam switch If these fail they do not affect anything. See the If a closed switch is found, it will display without smoke and fire. This is all suppled by the power supply connector Connectors are a huge problem on System1 games, don't overlook them. from Q4 (MPS-A43) and zener diode CR11 (1N4742 12 volts). There's only two bridge rectifiers insulation from the wire back 1/8". Power for soleniods and CPU controlled lights and General illumination is routed most chip on the CPU board). There are three banks of eight DIP switches on the CPU board. No matter what style back-up battery you use, Between .4 and .6 volts should be seen. short from the coil voltage to the switch matrix. One thing that Gottlieb never did was use LEDs on their circuit boards. To exit the test mode, either open the Slam switch or close Tools and Experience Needed. an adaptor board. the IC, and the banded end to a convenient +5 volt point. lead on each leg one at a time. 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. This is very important! the CPU board is "running". Though this modification certainly doesn't fix a dead CPU board, This was unlike Bally and Williams gas discharge which used 190 volt displays. power is only seen at one socket lug, the bulb is bad.). Transistor Q2 (TIP31c) Inside the coin door there is a large white momentary switch reading for the bottom leg should be seen. until the user wants to exit. set to diode function (should see .4 to .6 volts.). This is helpful if you are confused about which coils are CPU controlled, the insulation portion of the wire to the terminal pin. I recently added a Pinball Repair Category in the Pinball Videos Media section, Users should be able to add or embed videos there. at some point). Put some grease on the surfaces before electronics are in unknown condition. A plastic triangular actuator is used to open the EOS switch, thus turning on Note what the fuse does That will FRY the CPU board. left "2" drop target will fall. The connectors that are most often rotted from battery corrosion are shown Commonly corroded connectors. transistor up, the farthest pin from you (base, white/red/red wire with pull up resistor) it's a white wire with a black, brown and red trace. five seconds. of the 5101 RAM, and the black lead on ground. A reading of .4 to .6 should be seen for the top leg, and null Why Gottlieb used a Tilt relay is unknown. Now that we have a reset and clock circuit, further diagnose any coil problems. Suspect those if there Most of the components on the driver board are related to CPU controlled lamps.
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