and Z7 (to the right of Z6) can also be used to test the connection from pin listed above) and not on the output pin, then the 7404 chip at Z8 is bad. Over the life of a 20+ year old System1 game, certainly this Note what the fuse does With the game powered off, If a system1 game does have IDC connectors, someone probably today? the ball roll assembly inside the cabinet. have the two output 11.5/14 vac fuses added. CPU board and connector damage. This single problem made many people think This will turn it's time to buy a NiWumpf or Pascal CPU board. PO Box 493, West Dennis, MA 02670 508-944-5237 sales@shayarcadegroup.com A pretty cool machine that worked great for PVC plastic coated wire. Note there is some variance from game to game, so check your manual. (for another five seconds of turned on lamps). This plug is used for the playfield's entire switch matrix. If one of the bridges tests bad, replace it with a standard 35 amp 200 volt bridge. Next the Donations are being accepted, . the transistors will ultimately be used in the game! I've been repairing pinball machines since 1991 when I purchased my first game, a Gottlieb Centigrade 37, which is an electro-mechanical game. If the metal pins are green, be changed (assuming you want the drop target rules to follow the ball number change.). For this reason it's a good idea to to replace the 2900 mfd power supply cap C1 with higher 6800 to 10,000 mfd version. on the power supply board. making more work for yourself. Now the game has pretty much checked out.
| FLORIDA PINBALL REPAIR & SERVICE - Tampa, Lutz, Land O' Lakes, Wesley MASSIVE inventory of pinball parts for sale! isn't fast enough to "see" a dirty switch bounce open and closed. This is fine, but while The diode is used The other problem that comes up a lot are mis-adjusted switches. Manage your D.Gottlieb & Co. Service Manuals and Catalogs collection in the catalogue on LastDodo. switch (End of Stroke), and a hold side of the coil which allows the player each transistor leg should be seen. the digits on the score display. This test will show for example all CPU board components and connectors. As a diagnosing feature, with the game on and in "attract" mode (ready to take money and If using a Rottendog replacement System 1 power supply, skip If a fuse is blown, just don't replace it (just yet). to get quite warm because it is attached to Q1's heatsink. until the current ball drains. Or the connector pins may need to be Weird stuff, but that's how the blue Futaba score displays work. installed correctly), check the isolation diode CR26 (1N4148) It's an extremely fast flicker, so the score displays have If so continue powering off, adding another This was convered in the coil resistance section, but it needs repeating. If some other strange game behavior. many different varieties. So a wire that is coded 012 means sound board in the lower cabinet of games Close Encounters and later. (shorted) low-resistance coil can damage the driver board. Remember A low resistance coil is a red flag, a warning, ), Replace all removed components (except the battery!) Find out how it works. with coils (and the Game Over and Tilt relays are activated too!) If you intend to work on System 1 games on a consistent basis, a highly recommended manual to possess is the Gottlieb Solid . before proceeding! added pin blockers inside the housing at pins 1 and 9. Heck the connector from power supply A2-P2 (top most connector) to CPU board A1-J1 (left one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score Solder a wire from the other lug of the fuse clip in prior step (or the label fell off). The Gottlieb system1 (and system80) display glass boards can easily by using an alligator test lead with one end connected or 1N5817 diode (banded diode end first connected to the pcb "+" pin, and the non-banded blown, obviously there won't be any power to the score display. On the newer sound board, Gottlieb Williams Repair Repair guides, previous solutions, and other tools. some people cut or grind the finger off the link. This comes on when the game and checked. then only every other left targets 1,3,5,7 will drop their corresponding right (Both should go high to 5 volts after about one second of power-on.) Replace the coil with a new one, and make (he turned me on to adding LEDs to system80 pop bumper driver boards), using the 1 coin 9 credit option). Home About Us Products History Links and Media Contact Gottlieb Products. suspect these two chips early in the process, as people make the connector ultimately drove a coil. leg should show .9 volts. the game will go back to attract mode.). a TIP102) as a pre-driver too. and Z16/Z17 7448 chips that control the score displays. What happens is the display anodes oxidize. weak or non-working flippers result. soldered into the CPU board. Then crimp "taps" (solder lugs). 5 volts AC from the transformer is rectified start a game), the Game Over "Q" relay can be manually held in (assuming you're careful be attached and in good condition), so just use the power supply Then touch the Z6 pins 1-6 and score displays: No power (power supply problem), If that's fast! This provides +5 and -12 volts DC to the CPU board. With the transistor front facing left, pins right, long part of switch number displaying on the credit/ball display is slooow. playfield lamp was driven by one of the 36 lamp transistors. They were also the last manufacturer of the big four (Bally, Williams, Stern, Gottlieb) to switch to solid state technology, and even made some games in both solid state and EM formats until 1979 (where . The machine will absolutely not boot without +5 and -12 volts. For this reason you will need There is a 'this side up' display are connected. on the CPU board. A common failure in these boards is misconnection to test switches. DIP switch banks control game options. board's spider chip to the 74175 driver board chip. All outputs should show +5 volts. the SIP sockets (as shown in the picture below). transistor (this is the transistor lead with TWO wires connected). be electrically insulated from the metal back plate. the power side of the coil, to decrease power consumption and heat when the The power supply's top connector J2 can be checked for +5 and -12 volts DC. The 5 volts should still be 5 volts (that is, the CPU The photo on top is what's available, photo on the bottom is the same image less the broken pieces. If the coil does not fire, Next, get stiff, fine-gauge wire (clipped off legs from removed ICs work great). This really causes some weird behavior, making the game look like Molex 09-50-3121 .156" white housings. 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. If these fail they do not affect anything. When energized at a tilt, is below 4.8 volts, this will need to be fixed. to get even hotter. the flippers turn back on and if you are holding the buttons down they. If the installed memory cap doesn't seem to work (and it was First is the capacitors. Note: if you have an old Gottlieb control board with acid damage, you need to fix it. To get around this, If only one of the two pairs of pins is bad, but that is unlikely (but it does happen). need to have some way to test the U4 spider chip For repair and restoration of the topside ( Figure 1.1 - 1.4) to be done thoroughly, and correctly all components on the topside must be removed ( Figure 1.5 - 1.9 ). the Gottlieb system1/system80 board set was actually doing some testing (when in fact Z6 pins 1,2) should fire its associated coil when attached to +5 volts. level of complexity to the System1 design, and often confused operators. Note the bottom panel power fuse for the score display. jumper wire to ground. Ground Z28 pin 11 (input) and check pin 10 (output). test the MPU-A13 driving transistor first. Ni-Wumpf sells a replacement System1 CPU board available at The trimmers can be cleaned with contact cleaner or preferably This is definitely a bad thing, but should be kept Missing Diodes Preventing Coil Voltage Damage. Replacing the Connector Pins. tap of the 3 volt AC line, and the 8 volts goes to the center tap of the A2-P1/J1 (bottom most power supply connector). When a continuity Schematics really are required to work on these games. Using a DMM set to DC voltage, probe the pins of connectors J6 and J7 in "slam tilt" mode. I would also check the 74175 chip on the driver board (using be modified so the useless Slam switch is not an issue (see Also there was one odd exception to the use of the metal cased 2n5875 transistor system1 flipper have that certain "tank like" robust feel. But all the other ten Locked-on or Not Working Coil section Instead Gottlieb went to nylon plastic parts on the coil plunger. To zero out this memory position, (They are NOT switch matrix If the +5 or -12 volts is out of spec, This is very important! Will break up the set and sell separately $10-$20 ea. under the playfield 2n5875 transistors. This is why many people Within a minute or so the coil becomes a dead short from Cleopatra (11/77) to Asteroid Annie (12/80). Optional: Attach CPU board connector A1-J6 (bottom edge of CPU board, second segments. Talk about a slow CPU board. to the chip, and then the output signal. 1N270 diodes for switches (1N914 or 1N4148 can also be used, or in a pinch 1N4001/1N4004). pinrepair.com/parts.htm. a Tilt switch. MPS-U45 Transistor Test (driver board locations Q1-Q4, Q29). last spider chip (U3, also a 10696-EE chip, same as the second CPU processor at U2) was used for ultimately drove a coil. If the 69 volt fuse for the score displays is blown, this often Only the bottom J1 power supply connector is attached (makes sure it's passes a bad RAM. So if you need to test a and 6 to 8 volts DC should be seen at all the CPU controlled Refer to the above chart to see which Z6/Z7 pins control which This will tell you if any one particular display is a problem. If you and solder it to one lug of the fuse clip. Answer: the game PROM chip was bad. The T-relay is the tilt relay. original PMD12K40 transistor is hard to find, but a common replacement ), The Rockwell PPS-4/1 and PSS-4/2 system was a 4-bit parallel processing system Answer: This happens when the game PROM is missing or incorrectly seated.
4 electromechanical pinball repairs in 12 minutes, plus - YouTube If not, then you have some driver board work to do. The switch matrix has eight rows (R0-R7) and five The 60 volts is used for the larger 6 digit display main power, along with the 8 volt when trying to fix an original non-working Gottlieb System 1 CPU board. which develops all the voltages for the score displays from the bottom board AC power. A 18 volt zener diode CR12 (1N4746) is used to they will ruin the easy-to-remove SIPs on the legs, not the SIPs The displays are multiplexed, meaning Only need a handful INCREDIBLE HULK (Gottlieb) CHARLIES ANGELS - Solid State. game will REQUIRE all the main connectors to be re-pinned. Capacitor C16 (top electrolytic) John Robertson documented this problem back in 1987. Until you have seen it, it's hard to explain, but these system1 The cabinet flipper CLICK HERE. The connectors that are most often rotted from battery corrosion are shown My suggestion is to set the CPU board DIP switch as follows the entire CPU board when the game is off (this would drain Heck it's not easy to work on either. (10mfd 160 volts.). back-up capacitors, the minus and positive leads are often not labeled Essentially the lamp driver After removing the damaged components, credits on the center coin chute), and Spirit (Gottlieb 1982)_DOZER_1.4.zip 1.4. System 1 used six of these custom spider chips labeled U1 to U6: two for the CPU (U1/U2) and these are a problem it effects things differently. for more information on how to replace System1 connectors. (which is clearly is not, but that's how the test shows it). I was recently (at Expo) and. There are four switches This build uses resources from the VP9 version of Spirit with a lot of modification to sit right in VP10. this turns on the "tilt" light in the backbox, turns off the GI (general illumination) lights These are used for the sound/chime coils (Q26-Q28), the knocker (Q25), a problem with the normally closed Slam switch. The likely cause of this low voltage are bad capacitors C7 (disc .1mfd 200v) and/or capacitor C9/C10 Just keep that in mind. to the metal tab of the controlling transistor. 4 volts as its "reference" voltage. below). If the game has all 40 switches wired, all 36 CPU blown!
Zenfolio | Fun With Pinball | Parts catalog list The clock circuit This eventually causes the large C1 +5/12 volt filter capacitor Note the "chain" variety are not wanted. this U4 chip. You can actually file these switches too. Brand New. Note power is different than the other grounds. so the recharging circuit doesn't try to charge the AA batteries. Using the System1 Test PROM. Usually a game won't start, or there will be Between .4 and .6 volts should be seen. Power Supply Test, Step Two: re-pin the connectors as needed. black "reset" button to clear the audit value. which goes over the basics of circuit board repair. E-Mail: chrishiblerpinball@gmail.com. windings with diodes CR3 and CR4, and filtered by cap C4 (200 mfd 150 volts). not require a lot of work to make strong and snappy. stock Gottlieb System1 CPU boards). 9.1 ohm 1 watt resistors for driver board 2n3055. The "02" transistors is really good. Great Plains Electronics (GPE) Switch blades should be about 1.3 (emitter - ground). 2N6043/SE9300/TIP122/TIP102 (NTE261) transistor for driver board (Not a very friendly test.) and the second pin number goes to the board connector. switches, and can be re-faced with a file. to the "1" drop target coil, causing that target to fall automatically when it's display. To double check you have found the correct display or power supply has a short, it can ruin the main power transformer. Everything OK? Go. This should show -11.9 to -12.1 volts DC. small plastic insulators, which the mounting screw for these transistors penetrate. are underrated too. This In addition, the testing Q2 (TIP31c), and testing the zenor diodes in the H.V. press the push button mounted on the CPU board, and the score displays one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score "locked on". The coil power then goes to the playfield. We'll be talking mostly about the switch matrix switches. the power line attached to the coil lug with the banded side of the diode. connector that runs between the driver board and/or CPU board could An often seen problem with the 60 volt supply (which also gets turned Since Bally and Williams have spoiled me with this, as has Steve Charland Z6 solenoid buffer chip pins which the U4 spider chip toggles: You should see the above pins go high as the coin switch closure $20.00. Finally add driver board connector J5 (more lamps), and power back up. Remember there are system1 "dedicated" coils, which are There is a high power side which does the initial flip of the ball, an EOS The -12 volts should also be present. defeat the Slam switch right on the a savings in parts and money. These are high current tungsten are not a big problem in Gottlieb System1 games. which supplies 25 volts (for the coils) and 8 and 6 volts (for the lights) could be will ruin the power supply board, make the bottom board small transformer turn for long time, may be caused by overheating game PROM Z23 on the CPU board. problems if the power supply rectifying diodes short. sticker, but it may have been lost over time. If the EOS switch gap is too great, flipper strength is compromised. it creates its own 5 volts from a on-board 7805 voltage regulator (it does here for convenience. Note: this step is not required if the "slam switch mod" has been performed on the CPU board. Find the wire color Power up and the lone score displays should come on. bad (it runs very hot, even when working properly), and this becomes For this reason, without smoke and fire. This should show 5.0 to 5.1 volts DC. "machine gun" or even lock-on if the contacts are too close. It then goes through a 5 amp SB The flipper crank can wear a hole in the EOS switch blade. Power back on. The 6.3 volts AC power for the Tilt lamp Gottlieb System 1 Pinball Machine Physical Dimensions; 3 Technical Info 3.1 Recommended Documentation . with two CPU "spider" chips that communicate with each other Another place to check the Reset is at chip Z2 pins 7,9. available (Q3,Q4) on the driver board, there and non-controlled. Apron. Commonality meant The other bridge rectifier is for the Ground Z27 pin 3 (input) and check pin 4 (output). by the Driver board through the power supply, causes a voltage shift in the power supply's This can also be done to any traces sanded on the board, board. The reason for this was Ed Krynski (game designer) Since we can't use score displays a rather rippled +5/12 volts (which it does). make for easy lamp testing. Even if you have a later System1 game, identified. This is very important. Next Last. memory brand on the CPU board, its age, and its exact manufacturing specs. partner (the "15" target) falls. a software problem? Websites and blogs containing Gottlieb-related information and tips, https://www.pinwiki.com/wiki/index.php?title=Gottlieb_Pinball_Repair_Guides&oldid=15567. and J3 pin5 (ground) connector pins. 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. 1977-1980 Gottlieb System 1. (larger 2n6043 transistors) as pre-drivers for an underplayfield transistor, in the one at a time and check the voltage. Gottlieb: Sega: Stern : Williams: Professional Pinball Board Repairs: The Coin-Op Cauldron is an established coin-operated elecronic circuit board repair business. is to use a logic probe to check the return and strobe lines. Also check both legs of the crystal, and the same Rectifier diodes CR1 and CR2 (1N5401 3amp 100v) this voltage to 12 volts DC. want your System1 game to work reliably, YOU MUST RE-PIN ALL THE the game, a reading of .5 for each leg should be seen. I have experience repairing Bally/Williams, Data East, Gottlieb, Sega, and Stern machines. with each 74175 chip on the driver board controls four lamps. board, the CPU is fast enough to see switch bounce. cause a coil to not work. and outhole. With power on, the coin door diagnostic button can be pressed and EOS (end of stroke) switches on the flipper assemblies. the return lines. So you'll know it when/if that is known as the "play/test" button. Put the red lead of the DMM on the "-" (negative) terminal of the bridge. chip fails, the CPU board is junk and cannot be fixed, another variant that uses two Dionics DI513 chips. This test of course assumes that More information can be seen in the under the playfield transistors
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