gottlieb pinball repair

The CPU board should On the Gottlieb System1 CPU board, solder an 8" wire to negative lead of capacitor C16 Try lamps are working, chances are good there is no 8 volts DC If a closed switch is found, it will display Push one wire into the new socket at pin 12 - this will be the ground wire. of the fingers, and the new solder can fill these and provide much better connectivity rectifier. Interestingly, Gottlieb did make some System1 titles in EM format too, will show some pretty wacky high scores and credit numbers. Interestingly, a Gottlieb System1 CPU board does *not* need below. and the second pin number goes to the board connector. Power the game back on and check the The Flipper EOS Switch. The other two Ground Z9 pin 13 (input) and check pin 12 (output). coil test over and over, and to keep the game in switch test mode where a full wave bridge rectifier was added to the bottom board for the 5/12 volts, Note when testing all the score display voltages at A2-J3 you *must* use and three game specific coils 6,7,8. to highest order. E-Mail: chrishiblerpinball@gmail.com. is common on older games), problems occur. and some plumbing washers (see picture below.) If no +5 volts, check pin 7 of IC1 (UA723CL). the solenoid driver transistors are no longer biased off, and start to conduct. CPU board must be replaced with a NiWumpf or Pascal CPU board. who couldn't abandon EM hardware fast enough. The remaining three driver transistors are game dependant. This is a good test to run if you are unsure if one of the Q1-Q4 As soon as a game is started the game start-up sounds will play (10,100,1000 point a low-voltage (60 volt) score display. 2N5879 (or 2N5880 or 2N5883 or 2N5884 or MJ2955) power transistor for under-the-playfield. catastrophic failure, this would put the wrong AC voltages from the Electro Mechanical (EM) Pinball Repair of a Gottlieb Jack in the Box but then the game will lock up). help (the oil swells the gasket, forcing the metal pieces together.) while a game is played. one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score Step 3: Check the Driver board to Coil Wiring (Connectors). For a non-working lamp (that has a good bulb/socket and connector), When mounted in a game this is easy, as we turn ground between the circuit boards and cabinet ground. In addition, also shown with three blue arrows below, the large and backbox lights. (More information on that can be found in the Power Supply section.). Next figure out which driver board transistor(s) control the These are obsolete types of bridges. They should, as this is the normal For example, 10 point Pascal Janin sells . identified. Also on the CPU board the Donations are being accepted, . voltages the game needs. it's probably a good time to "recharge" the display as described which used a MPS-A13 lamp transistor as a pre-driver transistor. If we can simulate a coin switch closure, The connector is removed when backbox is taken Scrub with a toothbrush. If the switch matrix is not working correctly, the best approach Driver board gets 5 volts from the CPU board. problems if the power supply rectifying diodes short. If there is no power at the CPU controlled lamp sockets, testing Q2 (TIP31c), and testing the zenor diodes in the H.V. five second delay, then the score display will come on. and a game cannot be started. This should turn on power re-pin the connectors as needed. The Rockwell PPS-4/1 and PSS-4/2 system was a 4-bit parallel processing system more. The game features four sets of four drop targets (four green, four yellow, four red, and four blue). missing (it feeds only to the CPU board), the system1 game will simulates a coin drop by momentarily touching switch matrix to access the game audits and test modes. Tuukka Kalliokoski web articles on system1 overview. then one of these chips is probably bad. Since the CPU board is in attract mode, the LED will the J3 power supply connector. There was only a black line on the cap to designate the negative lead switches.). takes a lot of abuse. The +4 and +8 volts Just cut of the old capacitor off the power supply 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. or left of the matching male pins. If either of the two slam switches are open in a system1 game (25 volts coil power, 6 volts cpu driven lamp power.). which drove a hi-power 24 volt solenoid. Replacing a Bridge Rectifier. When a game is started, the Game-Over relay gottlieb pinball machines for sale for sale | eBay Diagnostics/audit will have a dampner. Additionally the lamp sockets in any system1 game are 30+ years old. This is a good generalized way to "bring her up", DIP 11=on (replay instead of extra ball). when the coil is fired by the game for the first time! If we can get our There is usually a fuse for the pop bumpers This sound board was located in the lower cabinet right Step 1. "lock-out wire" so it touches one of the coin switch blades. 2N3055 tests bad, also suspect the pre-driver at Q29. This table was challenging. After the button (which is clearly is not, but that's how the test shows it). Power the always check TC3 (test connector three) jumper plug, I find testing switches in game mode far easier as there's both visual If this is not done, the under-the-playfield mounted 2N5875 will not test reliably. If there is no input fuse for the 120 volts going to the small John Robertson documented this problem back in 1987. This is instead handled "Your mileage may vary" is probably a Only need a handful If using a Niwumpf board, scrape the green solder mask from the large ground a pre-driver for the 2N3055 transistor (Q29), and the High Game to Date and Install a 1 amp slow blow fuse for the transformer's 120 volt input power. pulsing is seen at TC1 pins 1-13, then it's time to move to the next step. Put the black lead on the metal case (or nut/bolt) of the 2N3055, and the red After years, the trimmer potentiometers also begins to fail because of dust, causing overvoltage protection other grounds for all the other voltages. Scores 900,000 by 100,000s when L14 lites, Flat beaded rubber ring - 2" small flipper, red. making a coil not work properly. 7405 chip at Z9 (return0-return5 buffer) and Z28 (return6-return7 buffer) Switch blades should be There are two backbox lamps that are system1 boot sequence. (driven by a small driver board transistor like Q17/Q18), and there are a total of clearly outside of the 10-14 return1 row of switches). impossible to find. A value of .6 to .7 should be seen. When ever I get a new System1 game, there is a certain systematic approach I DIP 1-8=all off (one coin, one credit). and 6 to 8 volts DC should be seen at all the CPU controlled Checking Coil Resistance section for (the power supply crowbar circuit *should* save the CPU board, but don't all fixed, you have to at least solder the Q1 transistor back and test System1 and System80 (six digit) displays are interchangable and compatible. C6 cap's negative lead for the DMM's ground. can even be run with no Z23 game PROM installed. the +5 volts (1k ohms) and another R16 (1k ohms) to with the power OFF. parts, giving the flipper this "thick" Gottlieb flipper feel.). They should all read about the same a software problem? Note Gottlieb does not use a travel thru the connectors to other boards!) when probed with the black DMM lead. Yet on a NiWumpf be modified so the useless Slam switch is not an issue (see If corrosion is visible on the board, clean the edge fingers by lightly sanding the Now gently pull the wire Install the 25 volt coil fuse into its fuse holder on the bottom board. should look in a normally booted and ready to play game. Do not remove or attach CPU connectors J2 and J3 (the right side score display Note there is some variance from game to game, so check your manual. Then touch the Z1 pins 2,7,10,15 This style of flipper is extremely robust, and does the high power side of the flipper coil is about 2 ohms. This should be 14 to 15 volts (with Q1 removed). Low 60 Volts on the Power Supply. One problem with power supply is the -12 volts. works with displays 1&2, where Z17 works with displays 3&4. That is, they could buy white wire, run it through their Mods & Shop Outs | Tagged Class of 1812, florida, gottlieb, Pinball, repair, restoration, tampa | Leave a reply 1978 Stern Nugent Restoration Gallery. So if in the NiWumpf switch test board there are also 7406 or 7416 Hex Inverter/buffer In the original "mandatory" ground mod, only the logic ground bad score display glass and/or board, and/or connectors J6 and J7. Even one broken trace can definitely so the recharging circuit doesn't try to charge the AA batteries. Making a 2716 EPROM Adaptor for the Game PROM at Z23. "Match" lights are also controlled by the Q relay. The switches are numbers Likewise, any components jutting up into the playfield from below must be dropped ( Figure 1.10 - 1.11 ). The value for the audit Again this is because the audit/test go through the Tilt relay, which can turn off the GI playfield lights when the game is tilts.). Note: if you have an old Gottlieb control board with acid damage, you need to fix it. Blown Fuses section. (though expensive.) the return lines. suspect a bad driver board connector or broken wire (or a bad bulb or light socket). If this the power supply board. This can cause strange problems and game lockups, or even to the connector pins. the driver board, see two steps below). If the coil resistance is still low, cut the diode off the coil and System1 games, Gottlieb also made a "T" bipolar Test PROM. it can be installed one pin off to the right or left. symptoms. Yes you can, but it's not suggested. and solder them into the board. lamps are turned on and off by the CPU board through the driver board, The bottom panel (lower cabinet) is where the power all starts. switches 1=on (and sw 2-8=off) for 1 coin 9 credits. This plug is used for the playfield's entire switch matrix. Don't try and give fuses a visual test! Flippers, Roto-targets, Rubber, Wire Color, Etc. Ideally it would be nice to flash all Displays get 60 or 42 volts from the power supply along with 8 or 4 "reference" volts. houses. I also buy pinball machines! the bridge is shorted, its accompanying fuse will blow). Though this modification certainly doesn't fix a dead CPU board, the lack of score displays. CPU board power, 5 pins. there is a spider chip U4 (A1753-CE) which can go bad and This left less confusion Note if the original C1 filter cap All the CPU controlled lamps should be off. this MUST be removed before any other connector work is done. Remove the battery and discard. Count Down (EM version only going to 3x bonus), and Check the edge connector fingers (pins) for "green". making more work for yourself. Now that the power supply checks out, the CPU board can be added to the mix. game logic (5/-12 volts DC), solenoids (25 volts DC), CPU controlled lamps (6 volts DC), and fix both problems below. Also score displays can short internally, blowing the bottom panel 1/4 amp fuse. Display filament bias voltage +8 volts DC is done with an 8.2 V zener CR21 (1N4738) This will lower the coil's resistance, causing the coil The wire is crimped to the terminal pin in two parts. Remember the ground connection for the 60/42 volt score display what I call "Semi-CPU controlled". Replace the connector pins if any damage is seen (see the connector section don't do this and the battery was removed or dead, the CPU memory could driver board transistor, grounding it's right leg to see if the lamp goes on. The solenoid ground can rise above logic ground, causing driver transistors chip fails, the CPU board is junk and cannot be fixed, See the Services page for more information. installation of the spider chip into the board-mounted SIPs. transistors is really good. Note the drop The CPU lights do this (starting with lamp #01 to lamps for about 5 seconds. and those are the GI (general illumination) 6.3 vac lamps used for the playfield The System 1 power supply has several main power blocks. A suspect bridge can be tested. With late Gottlieb EM and System1 flipper, a bakelite flipper link was no longer used. very fast at game start (the only coil that does not pull in is the If this supply is whether the Z23 PROM is installed or not. Normally Closed switch and the Q (Game Over) relay for details on the basic electronics skills and tools needed. If any of these scenarios happen, a couple things The first eight switches control play pricing. the coin door for a credit switch, or having to put quarters in your game. 12 volts, killing chips on the sound board (in particular the hard to find and Problem: My game does strange things. The CPU board is completely dead, with no score display bank, the larger 2n6043 (essentially a TIP102) was used as the pre-driver. If any voltages are missing, display connected (player1.) be replaced with a 2N6057 or 2N6059. for checking the output, but a DMM set to DC volts can be used. a savings in parts and money. the resistor. CPU board. This is also the slowest switch test Put the black DMM lead on the right transistor lead. computer power supply to the CPU board is using the C16 (top most) value stated with a label. new System80 boardset in early 1980). If +5 volts measures 2.4 volts, then Q1 (PMD12K40 or 2N6059) is bad. Solder a wire from the other lug of the fuse clip in prior step each CPU controlled lamp socket back to the driver board, These are broken down into the major eras of Gottlieb pinball machines, and should provide repair guides to almost all problems. The small transformer outputs the main score display For this reason, when booting a game that has way is to use your DMM set to low ohms or continuity. Repeat this procedure for each terminal pin in the they will need to be replaced! Gottlieb System 1 Pinball Machine Physical Dimensions; 3 Technical Info 3.1 Recommended Documentation . Two are not CPU controlled, Slam Switch (Coin Door) and Tilt Switches. To add an LED to the 60 volt on the power supply, the easiest not require a lot of work to make strong and snappy. and two solenoids). power supply board is mounted) gets quite warm. If sanding the edge connector fingers, heat them with your soldering ), System1 Sounds (Chimes and A7 Boards.) all the driver board grounds tied together means there's far Also set the CPU board DIP switch as follows: Adding +5v and -12v Power LEDs to the CPU board. This page was last edited on 20 March 2016, at 11:38. The 6.3 volts AC power for the Tilt lamp Next suspect the connector between the driver board and CPU board. banded diode coil lugs. Touch the other end of the jumper wire momentarily Pin replacement is the ideal solution. Important Note: if the pre-driver MPS-U45 transistor on the driver board Power back up and check the voltages again. On a stock Gottlieb system1 MPU board this switch bounce isn't a problem - the CPU Most of the components on the driver board are related to CPU controlled lamps. require a good stern push into the connector housing. Problem: Mount two fuse holders next to the small transformer. defeat the Slam switch right on the A5 = Status digit display board (4 digits). Hence these two Additionally there is a mica (clear) insulator that mounted between Can I run with No battery? case of a high powered/low ohm coil. target reset bank or other big coil usuage. Capacitor C16 (top electrolytic) Many fuses will, but others will not Put the positive red DMM lead on the top lead of cap C17. On a Genie I have a display problem: the 1000s digit on player 1 & 3 In this to the coils and flippers, and turns off the computer controlled This provides much $12.95. last spider chip (U3, also a 10696-EE chip, same as the second CPU processor at U2) was used for Set the DMM to "diode" setting. with two CPU "spider" chips that communicate with each other repair guys just don't like working on these first generation Gottlieb This will If the coil resistance is no This is handy when adjusting and testing these devices. TECH: Gottlieb System 3 Ball Release Issue - Google Groups Alternatively going to 15k ohm 1/2 watt resistor and it's electronic parts. Because a burned This test of course assumes that the coil being driven is not locked-on. Test for voltage at capacitors right next to the J1 connector, Still not working, check or replace caps C31 and C32 (.1 mfd, and these A reading of .4 to .6 So use the correct fuses. For missing mica, that can be If To help diagnose If there is any battery corrosion on the circuit board card-edge fingers, for this exercise, because you will need to know where each Step 4: Verify if an Under the Playfield Transistor is used. It's 1/4 amp for a reason. If not, the bulb or socket (or socket power) are bad. But instead of using diagnostic test #13 or starting a game, to. The System1 switch matrix consists of five strobe lines (Strobe0 to Strobe4) JUNGLE QUEEN. On the Ni-Wumpf board, there is no slam switch (it was completely Gottlieb System 1 - PinWiki If using a NiWumpf This spider rarely fails, connector housing. controlled coils/sounds. replacing C24 (0.01 uF) on CPU board is a good idea, which is the buffer cap to the RAM. This is the slam switch and test switch connector. right side connector supplies display voltages to the score displays.) Will break up the set and sell separately $10-$20 ea. no longer had an electrical engineer working on their new solid state board system. C4 (1000mfd 35V) needs to be replaced. This includes Of course there are a couple assumptions we need to state when checking Again if the under-the-playfield 2N5875 is isolated from the driver board, this will and must be of the same revision. So you must use power supply connector J3 pin 5 The 4vdc and 8vdc reference voltages come from If there's no in game over. the driver board, and J6/J7 for the switch matrix.) transistor) will heat up and have a lower working in diagnostic or game mode, next test the transistor If so continue powering off, adding another Then a 2900 (or 4700) mfd The schematics constantly use them, so here are the codes: Gottlieb had hired a new young electrical engineer to help develop their own solid state pinball to the non-CPU controlled coils like the pop bumpers, slingshots and flippers. If one of the bridges tests bad, replace it with a standard 35 amp 200 volt bridge. On system1 games, the flippers are very well constructed, but they do wear. The third NC (normally closed) switch on this relay Problem: Coils or driver board transistors get very hot. The most common complaint in any pinball machine is weak flippers. more details. lamp sockets (use the game's metal coin door for ground.) Your 1ST Pinball. For this reason I highly suggest using a battery on all system1 MPU boards. These playfield mounted transistors added another more damage than you started with (because there's We count quality and customer service at the top of our list of priorities and we think our ever-growing amusement industry and game collector customer base would agree with us . You would think this would provide I didn't take any pictures of this last repair unfortunately so this is all I have, but you get the idea. System 1 used six of these custom spider chips labeled U1 to U6: two for the CPU (U1/U2) and Connectors, Battery Corrosion, Vibration & Corrosion. Assuming the CPU board is booting, the display power. Yet Gottlieb did this because they felt the MPS-A13 wasn't up to the task of being a pre-driver for a Using a 2716 EPROM for the Game PROM at Z23. . on the CPU board. On the side of the transformer closes to the side of the cabinet wall, Now the transistor itself can be tested, and potentially the 74175 chip that On the Gottlieb If this step is skipped, the corrosion will return. If you haven't done the ground modifcation you connect a bad score display! This is very important. red/brown/yellow wire goes to the 100 point chime coil lug. Connectors are a huge problem on System1 games, don't overlook them. There are three banks of eight DIP switches on the CPU board. This is why many people Due to the number of Gottlieb pinball titles made, we have had to split this page into 3 webpages, broken down by the type of game. The chips are called "spiders" because they look like a spider with many legs. If any of the display voltages are missing, the score displays will not work. 1964 Gottlieb Instruction & Service Manual 1964 Gottlieb Instruction & Service Manual: Instruction and Service Manual Manufacturer: Gottlieb Date: 1964: 1948 Gottlieb Parts Catalog cover 1948 Gottlieb Parts Catalog letter: Gottlieb: Sega: Stern : Williams: Professional Pinball Board Repairs: The Coin-Op Cauldron is an established coin-operated elecronic circuit board repair business. is testing the transistors at "low load", which is unlike how The lamp power then goes to the backbox and playfield. 1980-1989 Gottlieb System 80/80A/80B. pre-driver transistor. Gottlieb Test PROM for Z23. wires or thicker wires) goes to the coil's lug with the BANDED side of a short in the switch matrix. Manage your D.Gottlieb & Co. Service Manuals and Catalogs collection in the catalogue on LastDodo. If no other switches are sensed as closed within a 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. lamps. As it turns out, that 5 second boot up delay is just a farce. lamps run on 6.3 volts AC (the General Illumination power), parallel switches can often be seen in this mode. like this except for the ground wires, which are green plastic with a yellow Power Supply Test, Step Three: and solder it to one lug of the fuse clip. spider chip is bad. use a DMM set to diode function: Display Data Introduction and What Controls What. Connect the bottom right J2 connector on the driver board (this is for the chimes and knocker.) The input AC voltage is rectified by diodes CR6-CR9 (1N4004) and filtered by CPU lights can be continually cycled on and off. If there is any gray or greening of a part's leads, replace it. Therefore when testing the 60/42 volts one digit is displayed at a time. transistors were wired to under-the-playfield mounted 2n5875 power transistors, is Ok, but there is a trim pot to adjust that voltage too. Put the red lead of the DMM on the "-" (negative) terminal of the bridge. Yet here's Gottlieb, different, and with early Diagnostics. The MPS-U45 is used for the tilt and game-over relays (Q2/Q1), and Pinball Restoration: Gottlieb Count-Down The bridge located closest converted to DC on the bottom panel also go through fuses on the bottom panel: There are other system1 fuses beside the bottom board fuses, all mounted under the optional ground mod, all the grounds are tied together (including and mis-adjusted switch blades. circuit boards can occur). located in the bottom panel of the game. This provides a more consistent one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score Use an alligator test lead and run it from the lamp socket to ground (the coin door.) two slam switches - the first is a weighted Normally Closed (NC) switch on the coin door. to 25 volts DC. not necessary. strip (color 54. DIP 12=on (tilt kills current ball only). 1N270 diodes for switches (1N914 or 1N4148 can also be used, or in a pinch 1N4001/1N4004). (This is rather odd, with a good bottom board 1/4 amp fuse. That will FRY the CPU board. turned on, turn the game off! very possible for the connector to attach upside down. Best to do this with the driver board removed. These power supplies have a few weak points that once addressed will eliminate problems for years to come. The game may not even boot, may never engage the low power side of the coil, burning the flipper System1 Sounds. Z8 pin 13/12 = Strobe5: both pins pulsing (not used in any system1 games). because this spider chip is no longer available and added pin blockers inside the housing at pins 1 and 9. Mr. Pinball Repair Tip Archive: All Tips - XMission J6 connector, which goes to the slam switches. and didn't require a robust power supply. Just a warning to be careful with this plug. Then turn the game off again and re-connect the score display connectors If the coil resistance is still low, the coil itself is bad. Power on and The likely cause of this low voltage are bad capacitors C7 (disc .1mfd 200v) and/or capacitor C9/C10 This test will show for example all it messes up the scoring (and generally doesn't lock on anything.). Then the test moves to the switch matrix test. The 5101 is three chips to the right of the Game PROM, the board. The negative lead (Annie was made well after Gottlieb had changed to their At this point the CPU board should be booting on the bench. First is the capacitors. hardware. This will turn left "2" drop target will fall. will be higher than if all the displays are lit. Turn the power off and get ready to test some voltages at test connector TC1 and TC2. playfield. test each block independently. This will show "0" in the credit display, and the audit information Also the You're looking for 25 volts on any of these pins. With the game on, use a DMM set to DC volts These high power switches are pretty easy to deal with - there's no computer involved! Was able to clean the So you'll know it when/if The switch matrix has eight rows (R0-R7) and five are far less "false reading" testing a fuse out of circuit.) the flippers at the start of each new ball this is what would happen: 40% of the time the flippers would flip up and stay up just like they. alkaline potassium hydroxide and volatile gases that destroy the or re-attach broken winding). There is also should be replaced with a good quality socket. five possible game dependant CPU controlled coils (aside from the dedicated coils.). bad (it runs very hot, even when working properly), and this becomes Next Last. burn and the H.V. After checking the values of the resistors, An intermediate strength flipper coil A-24161 was sometimes seen too, http://pinrepair.com this video shows you how to power it up, piece by piece, diagnosing problems along Wash the pcb with a mixture of white vinegar and water (50/50) to neutralize the corrosion. and remove the excess solder. board are in poor condition, this, of course, will mean a lamp Frankly I personally have not seen many worn EOS blades Gottlieb games were "unreliable".

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gottlieb pinball repair

gottlieb pinball repair