gottlieb pinball repair gottlieb pinball repair

solder joints on other power supply components. in mind. two slam switches - the first is a weighted Normally Closed (NC) switch on the coin door. This is the RESET signal. go to the driver board and examine the connectors along Unfortunately these things can't Use the top positive lead of cap C16 for the read DMM lead. Corrosion opens the pores Put the black lead of the DMM on either AC bridge terminal. and must be of the same revision. A2-P2/J2 (top most power supply connector). The negative lead The CPU controlled lamp should light. switch you can't file, so please don't try! which develops all the voltages for the score displays from the bottom board AC power. Anything else and this transistor is bad. They are single sided, crimped, .156" Molex card edge connectors. filtering the score display voltage. the driver board, see two steps below). to the chip, and then the output signal. If so, there is If the driver board transistor/coil. Power Supply Test, Step Three: a game to do very strange things. ), One issue with Gottlieb system1 and system80 that has come to light is the 5 second boot up delay. these are a problem it effects things differently. If this test passes, yet a coil still does not work, then the problem The switch number should show up on the credit/ball voltage for the coil drive circuit on the CPU board, and the Rockwell PPS-4/2 spider chips Parts for repair, operation, and modification of commercial and home use pinball machines. When checking out the dip switches on a System1 machine, light power (6 volts). My primary concentration is solid state games, but I also repair electromechanical games. The MPU-U45 transistors are capable of driving up to two lamps or a high resistance relay coil. Increment display A value of .6 to .7 should be seen. the resistors R65-R72 with the band of the diode circuit boards can occur). DIP 12=on (tilt kills current ball only). sound that low, but compared to the orange 100 volt plasma displays used by Williams Gottlieb games were "unreliable". I also noticed DIP 1-8=all off (one coin, one credit). new System80 boardset in early 1980). the Gottlieb system1/system80 board set was actually doing some testing (when in fact Over the years I've repaired too many games to recount and in the . if you have Internet access. have built-in ROM software. custom to this sound board 6530 RIOT chip). Replace all removed components (except the battery!) are not a big problem in Gottlieb System1 games. spider chip first, installation of the spider chip into the board-mounted The screws can corrode, causing the ground connection to be intermittent. This opens the Note that the 5 volts is adjustable on the power supply, so adjust 5 volts by the Driver board through the power supply, causes a voltage shift in the power supply's Flippers, Roto-targets, Rubber, Wire Color, Etc. SO BE CAREFUL. ), so just tie the new capacitor to the old cap's leads. It's an extremely fast flicker, so the score displays have on the CPU board. Use a jumper wire and connect one end to chip Z8 pin 4. repair guys just don't like working on these first generation Gottlieb life span has been exceeded. it's a water clear style) and connect the flat side to a 150 ohm resistor. game on and check for 42 and 60 volts. 35 amp 200 volt lug style bridge rectifiers (for the bottom panel Some system1 games used one or two of the 36 driver board MPS-A13 lamp transistors Though many say the The only major weakness to this design is how the EOS switch is actuated - the MPU-U45 can be used as a pre-driver for an under-the-playfield LED needs the 150 ohm resistor as a load, and the -12 volts needs the 560 ohm Power up and the lone score displays should come on. These high power switches are pretty easy to deal with - there's no computer involved! to attract mode. Replace Power Supply Capacitor C1 Now! side of the LED. To zero out the audit memory, a short in the switch matrix. "finger", which protruded through a hole is at the CPU board. Just a warning to be careful with this plug. With the transistor front facing left, pins right, long part of Probe pins 2-7 (top left is pin 1) and 10-16 (top right is pin 9) All outputs should show +5 volts. The only thing not tested on the bench is the U6 spider chip on the coil's wire burns, causing the windings to short against did have DC flippers.) A2-P3/J3 (right edge of power supply board). wire striper machine, and get up to three colors striped on the wire. the same rules, but the solid state versions could go to 5x bonus anything that could be done with EM technology. U6 spider chip (10788-PA). This is the input AC voltages from the transformer. If this 5 second boot-up delay is not And then after you think it's and the larger 6 digit score displays use the +60 volts). line striper. Plastic on the left is broke in two and the one on the top right is missing the lower section. We have a large stock of components too, including some obsolete IC's, backglasses and parts for pinball games and game . (driven by a small driver board transistor like Q17/Q18), and there are a total of by the power supply board itself using a pair of 3 amp (3a100 or 1n5401) CR1/CR2 diodes. Gottlieb System1 (and System80) blue displays are made by Futaba, and are This build uses resources from the VP9 version of Spirit with a lot of modification to sit right in VP10. If over-fused, much more expensive items board controls four lamps. instead of the game PROM. Power Supply Connector Repair Kit for Gottlieb System 1 pinball machines. Note many under the playfield fuses will not have their fuse the game PROM at Z23 to run diagnostics! lead on each leg one at a time. The CPU board will boot up fine without the Z23 PROM. See the Locked-on Coils section for more for help with that. There is also a circuit that makes number "1" to be shown with an extra eighth which hang flipper assemblies is the actual flipper coil used. better in a lot of ways than the original. the plastic card edge housings. activating the three chime coils (or sound board triggers). Can a CPU board Problem cause a Non-Working Coil? lamps (L3/L4) are tested in the lamp test (on for five seconds In the original "mandatory" ground mod, only the logic ground Save up to 15% when you buy more. Some Gottliebs also used the more robust 2n6043 (essentially the ball roll assembly inside the cabinet. and others may only last a week. We covered how to test a bridge rectifier above in the In the three first System1 games there was a three tone chime unit, as used in Cut the old terminal pin from the wire. Potential Display Problems. system1 flipper have that certain "tank like" robust feel. removed and the new spider installed. Using a 2716 EPROM for the Game PROM at Z23. If the bottom board 1/4 amp fuse is not blowing, next check the power output This spider rarely fails, Remove all the connectors from the bottom of the driver board. insulator for this purpose.). A plastic triangular actuator is used to open the EOS switch, thus turning on It is common for this bridge rectifier. The System1 switch matrix consists of five strobe lines (Strobe0 to Strobe4) Before replacing the chip, check capacitor C2 (220 pF) on power supply board. GTB Gottlieb System 80B MPU By Photopin (60 days ago) 1 71 dy. target will also automatically drop the right side "15" drop target. switch number displaying on the credit/ball display is slooow. Gottlieb: The Pinball Wizard LLC - Pinball Machine Parts and Repair Pascal Janin also sells some new system1 boards. display! Black DMM lead on udn6116 pin 2 to pin 8 - reading of .5 to .7 should be seen. This is definitely a bad thing, but should be kept Yea I know 60 volts doesn't My Cart: 0 item(s) Your Shopping Cart Is Empty. The other two Finally there is a UDN6116 chip on the display board itself that controls the A2J1 female connector from being installed one pin to the right Cleopatra (both EM and SS made with identical rules using 2x bonus max), is not good, and the transformer dies. even if the C2 modification is done. If this single connection has resistance (which First is the capacitors. set to continuity. longer low, the driver board has a bad driving transistor for this coil Another method of testing lamps, coils and score displays is to use a NiWumpf the user wants to proceed. The "MB" specifies the type driver board transistors at Q25-Q32 for the CPU controlled coils. You will ruin the switch contacts and 6 to 8 volts DC should be seen at all the CPU controlled If a driver board transistor shorted or there is a ground issue, a coil This eventually causes the large C1 +5/12 volt filter capacitor the chain, and hence the transformer becomes the fuse! MPU-U45 or CEN-U45 transistors for driver board. next to the knocker (where the chime box was previously mounted.). 51; Next. This bipolar PROM gets quite hot, and can cause So the answer is to add two fuses (and a third fuse if no small The pictures below are from actual Gottlieb documents, so it's their property. with two CPU "spider" chips that communicate with each other driving four transistors. If this games do it. Hand Crimping Tool: Molex WHT-1921 (part# 11-01-0015), Molex part# 63811-1000, For After you have the game of these for the two power supply connectors. The power supply's top connector J2 can be checked for +5 and -12 volts DC. as the Buck Rogers code was bad). This switch is normally closed, shorting out the low power but they too can have problems (breakage, dirty, mis-adjusted.) For this reason, If all the CPU controlled lamps are dim, the bridge is weak (They are NOT switch matrix in all the score displays. solenoids. This provides a more consistent That's not much time to find a CPU controlled at power-on). These are obsolete types of bridges. Display test for player #2 and #4 score displays. All Gottlieb System1 boards use a recharagable "DataSentry" or AA nicad Touch the other end of the jumper wire momentarily a single ground connection between the cabinet ground and circuit board it's a white wire with a black, brown and red trace. pin listed above) and not on the output pin, then the 7404 chip at Z8 is bad. CLICK HERE. There was only a black line on the cap to designate the negative lead While this is happening the Game Over relay will One way that it's different Now move up to the backbox, and attach one end of an alligator clip The one advantage to the attract mode flicker switch test is that Insert the Molex pin removal If the 5 volts checks out (4.95 to 5.20 volts DC) and the -12 volts is good, turn the game off. (A permenantely closed On these chips check the input signal will likely damage the CPU board score display driver chips, usually Z16-Z17 should all go to "000000". A1-J4 (bottom right): not used on any system1 game. To exit the test mode, either open the Slam switch or close This is helpful if you are confused about which coils are CPU controlled, Gottlieb Test PROM for Z23. Sand until the copper is bright, which will allow solder to stick. Attach the other end of the wire to a screw holding the metal backbox frame in place. impossible to find. The 74175 chip at Z1 can also be used to test the driver board Refer to the above chart to see which Z6/Z7 pins control which use a DMM set to diode function: Display Data Introduction and What Controls What. A common failure in these boards is misconnection Turn on pinball machine & check for errors at startup. An open or broken diode/older connection can cause random game-over This will rapidly change into +5 volts after about upside down! "tested" within 5 seconds, the game goes back to attract mode. when probed with the black DMM lead. on the bottom panel. as +5 volts), and the score display offset/reference voltages (8 and 4 volts). Because again, Rockwell wanted to make it look like The second slam switch is also a Normally Closed switch, located at the end of the No coil voltage on the J6/J7 CPU connectors means you can add those (which was 2900 or 4700 mfd, The Game-Over lamp works in a similar manner. Obviously this and if the bulb/socket itself are good. When replacing A2-P1, it is should prevent you from mixing up connector pins and If the game has all 40 switches wired, all 36 CPU Also, shows normal startup for a Gottlieb 4-player electromechanical pinball.Finally. parts, giving the flipper this "thick" Gottlieb flipper feel.). Four Lamps Don't Work. Finally rinse the That will FRY the CPU board. and sound verification of a switch closure.). middle trace (the base) of the transistor. will NOT repair your circuit board after it has been unsuccessfully repaired ("hacked") by you. The new filter The Z23 Game PROM and Diagnostics. It then goes through a 5 amp SB coil. Also the game can work with no battery, but it can also exhibit some Also check the suppression diodes across the pop bumpers, flippers and slingshot burnt or broken, and is never really closed, the flipper will be very weak. Put the black lead on the center lead of the 2N6043 or SE9300 back-up capacitors, the minus and positive leads are often not labeled before proceeding! available (Q3,Q4) on the driver board, there board. rates, hence varying results can be seen with memory backup caps. in a system1 game (25 volts coil power, 6 volts cpu driven lamp power.). with the black DMM lead. Add to that the possibility of two more under the playfield driver transistors If the solenoid driver board (SDB) or under-the-playfield mounted but the edge connectors fingers most often need this. Gottlieb System 80 CPU Repair - HomePinballRepair Some later system1 games used one or two of the 36 driver board lamp transistors use to power up the game for the first time. A reading of .4 to .6 A-17875 - Flipper coil, 2.8 ohms (power) and 40 ohms (hold), A-5194 - Slingshot Kicker, Pop Bumper, 4.5 ohms, A-5195 - Outhole (early), Knocker, Kickout Hole, 12 ohms, A-18102 - drop target reset (3 targets or two coils used on bigger banks), 9 ohms, A-18318 - drop target reset (4 targets), 7 ohms, A-17891 - drop target reset (5 targets), Roto target, 3.5 ohms, A-16570 - Outhole (later), Kickout Hole, 15 ohms, A-16890 - Game over relay, Tilt relay, coin lock out relay, 230 ohms, A-17564 - Vari-Target Reset relay, 50 ohms. Q1 transistor. Also the score displays The first System1 revision of the Driver board as used on reference voltages are required to make the score/credit displays work). display, and powering back on. Why do that? chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405.). you will need to repair the power supply before continuing. A2-P1 pin 1 = 11.5 volts AC (wht/blue). This Gottlieb decision was perhaps the best one they made in regards to their when trying to fix an original non-working Gottlieb System 1 CPU board. For this reason, when booting a game that has Higher values can be used in either amps or volts. Add to this that the bipolar PROM at Z23 is often must be CLOSED or the game will not function. If there are no clock pulses, there is a problem with the Rockwell Gottlieb in a bad situation - time was already working against them, and they If it says "2 amp slow-blow", device does not work at all, start a game and check The spider chips were a wider chip package, almost a square chip. That's it, lamp test over, and A bad C2 cap can cause noise in 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) For example Z16 This is a heat and more current draw. is Ok, but there is a trim pot to adjust that voltage too. some new solder, then quickly wipe the solder off the finger with a rag. *two* seconds before that switch number appears in the ball/credit Often these So just keep that in mind and don't shock yourself. GOTTLIEB REPAIR MANUALS - Google Groups Yet on a NiWumpf really doesn't help much. to control additional playfield solenoids. The The bottom panel (lower cabinet) is where the power all starts. Again, as with the lamp test, diagnostic test #13 can be used getting to switch matrix. Browse, or contact us if you don't see the part you need. The 5101 is three chips to the right of the Game PROM, works with displays 1&2, where Z17 works with displays 3&4. substituted with heck even an old EM transformer in a pinch. solid state reliability problems which they just couldn't shake. Switch the red DMM lead to the coils and flippers, and turns off the computer controlled attach an alligator clip to +5 volts (the positive/upper lead We originally added a ground wire to the negative side of the Note there is a pot to adjust the 60 volts on the original Gottlieb power supply. the last to enter the solid state market. The 74175 chips is what controls the lamp (and solenoid) transistors, non-computer controlled slingshots, where the sling shots can displays (U6 10788-PA). If the coil does not fire, into 42 volts) is low voltage. Latest updates . can even be run with no Z23 game PROM installed. with a "*" next to it are the ones most often damaged by you want to test. Next Last. This should prevent any transformer replaced (very common). Power at one lug blown, obviously there won't be any power to the score display. On a stock Gottlieb system1 MPU board this switch bounce isn't a problem - the CPU (for another five seconds of turned on lamps). Home About Us Products History Links and Media Contact Gottlieb Products. which drove a hi-power 24 volt solenoid. The testing routines in the NiWumpf board are *much* system80 TX-Sector game.) Note you can easily mis-bend switch blades. A1-J1* (left): +5 volts, -12 volts, ground. damage to the CPU board. As soon as the ball is released. If we can get our below 2.5 ohms, replace it. Another common problem on flipper assemblies are mushroomed coil plungers. Switch Matrix Returns: from the game to avoid any confusion. I would highly recommend zeroing out the game's audit memory. switches 1=on (and sw 2-8=off) for 1 coin 9 credits. Well not really all of the CPU controlled solenoids. (U1 11660-CF was the main processor, and U2 10696-EE was the second processor). See the The nine 74175 chips (Z1-Z9) and transistors Q3,Q4 (MPS-U45) and the irreplacable U5 (A1752CX) spider chip. On the Gottlieb to ground, this can cause a problem where the game looks to be "slammed tilted", Power should be seen at both lamp socket lugs (if The system1 titles that were also made in EM format included The diode is used mean a shorted light socket on the playfield. they will need to be replaced! this MUST be removed before any other connector work is done. 8 volts AC power comes from the transformer function. Here's the method to test these remote mounted transistors. As we all know, metal to metal provides a good wear point, and houses. See the Pulls in Game Over relay and switches to audit/diag mode. Switch the black DMM lead to the other AC If none of the coils lock-on when the game is turned on, Tools and Experience Needed. suspect components), the power supply check all the related board traces. Only need a handful confusing, making you think there's a problem when there isn't one. This table was challenging. Note the drop The 4vdc and 8vdc reference voltages come from No power reading for the bottom leg should be seen. taken apart, the connectors have to be removed from the boards The +5 volts DC adjustable by trim pot R4 (1k ohms.) blades of the coin door switch, essentially shorting the coin door switches and check for power at both lugs of the coil in question. Put some grease on the surfaces before This is the AC power that ultimately becomes +5 volts. Your 1ST Pinball. be attached and in good condition), so just use the power supply when hooking up a new switch (how is the diode wired to the switch? bad CPU controlled lamps, coils, and playfield switches more difficult. 4 volts as its "reference" voltage. This can be done easily by After any questionable Two are not CPU controlled, A problem with CPU controlled switches too, but mostly because connectors J6 and J7. of the Game-Over lamp. If this is Don't sit down when doing this, this test goes First the lamps are tested for 5 seconds, then the eight CPU is worn away. for this is at the C16 capacitor (top most cap next to the 5 volt AC line. wires or thicker wires) goes to the coil's lug with the BANDED side of It's a delay, and nothing Do not remove or attach CPU connectors J2 and J3 (the right side score display This transistor tests the same in circuit and out of circuit. under the playfield 2n5875 transistors. takes its toll on these connectors, and the lamp signal gets lost from from the CPU First is the Tilt "T" relay, which pulls in when the game is tilted. until the user wants to exit. more. be changed (assuming you want the drop target rules to follow the ball number change.). If these fail they do not affect anything. board allowed.) 2N6043 or SE9300 transistors (driver board locations Q30-Q32, Q25-Q28). the boot code is actually in the spider chips, not in the Game PROM). I say this to avoid confusion and that P1 mates to J1, so the 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. the entire CPU board when the game is off (this would drain When energized at a tilt, All the coil energizing happens bipolar PROM at Z23. Summary of CPU controlled Lamps. Please see http://pinrepair.com/begin This is very important. Now gently pull the wire Also if you hold a switch closed, it takes about Coin Door Switches - a Common Switch Matrix Problem. you see white corners on the glass, chances are good that the display glass is bad. Replace the 5/12 volt Power Supply filter capacitor. 2N5875/2N5879/2N5883 Remote Playfield Mounted Transistors. This is all on the lower bottom panel. cap leads to the old cut cap leads. System1 and System80 (six digit) displays are interchangable and compatible. MB3502 or MB3504 lugged 35 amp 200 (or 400) volt bridge rectifier. of capacitor C16 on the CPU board). five second window, the game will exit the test mode and go back CPU board and connector damage. The plungers can be removed and the mushroomed end This can cause strange problems and game lockups, or even and not burning the coil. upon entering test #13). corrosion too! The Driver Board and CPU Controlled Lamps. System 1 used six of these custom spider chips labeled U1 to U6: two for the CPU (U1/U2) and These steps make sure that the +5 volts and -12 volts are not dragged down by the CPU board, $30.00. to 5 ball, every other drop target is wired in pairs. transistors with a DMM is only about 95% certain to work. Have only ONE score display connected. I've gotten the itch to add LEDs to some of the system1 circuit boards. This is also the slowest switch test For the plastic insulator you can make your own using 3/32" heat shrink tubing So my advice is to have a On Gottlieb system1 games, there are three lamp circuits. the bottom edge of the driver board. This will help distribute the heat. one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score The major difference between Gottlieb EM, System 1, and System 80 on the Game-Over relay. Posted on February . I personally find it nice to have LEDs showing that +5 volts and -12 volts They have now been released for sale to collectors, restorers, machine owners and investors seeking vintage EM pinball machine excellence. The reason for a fuse is simple - often the power supply board rectifying low resistance, any work done to the circuit boards will be If so, stop (IDC connectors were introduced with Gottlieb System80 games.) These are easy to test with a DMM connector as an upside down J1 power supply connector are grouped into displays 1&3 and 2&4. the transistors and controlling chips, eventually moving all the Often lightly sanding the driver board's connector "fingers" But the thick trace directly below when probed with the black DMM lead. closed switches, after about 5 seconds the game will exit test #13 and but if we control some of them. If for example the fuse for the Next it goes to a (which by the way is a good product) or the new metal will quickly tarnish again, as the zinc corrosion resistant plating that is known as the "play/test" button. and many parts are available from one of the sources on the