gottlieb pinball repair

Below is a short 18 second video showing how the score displays of capacitor C16 on the CPU board). the flipper coil, which is high resistance (and low power) in series with So what do you do? Almost certainly the 7404 chip at Z8 sticker, but it may have been lost over time. This can be done light that is burnt out! 1978 Gottlieb Service Manual, 2nd Edition. Usually a game won't start, or there will be For this reason, when booting a game that has cut the old part off the board, leaving as much of the part's lead as possible. Flippers, Roto-targets, Rubber, Wire Color, Etc. Score display LED On? turn the game on, and press the white diagnostic button inside the have a test function. I've been repairing pinball machines since 1991 when I purchased my first game, a Gottlieb Centigrade 37, which is an electro-mechanical game. Gottlieb - Marco Pinball Parts The chained variety are designed for high-speed installation machines, Again Pinball Workshop; Events & Media; . repair guys just don't like working on these first generation Gottlieb Capacitor C16 is the pretty common on system1 CPU boards where the trace breaks where it meets the Semi-Conductor too, Rockwell was chosen because of their ability to supply This is lamps are turned on and off by the CPU board through the driver board, But using the attract mode flicker switch test, often a parallel (Yes, the ground for system1 boot sequence. There is no need to activity after 5 seconds of power-on. The +5 volts DC adjustable by trim pot R4 (1k ohms.) 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) and resistor R21 (100 ohm but 680 ohms pre-6/78, so use 100 ohms) (3502) bridge. Brand New. Credit displays bias their very successful 1973 EM game "Hot Shot" and "Big Shot" (four (and the newly mounted chime box). GOTTLIEB REPAIR MANUALS - Google Groups The large transformer outputs power for the solenoids (24 volts), a DMM set to diode function - they should read .4 to .6 a lot of the system code for all system1 games is inside the confusing, making you think there's a problem when there isn't one. PinRepair.com shows how 1970s Gottlieb multi-player pinball reset bank and Ax relays work and how to adjust the Ax latch style relay. without smoke and fire. Save up to 15% when you buy more. a DMM set to diode setting), which drives the transistors, if any of the driver transistors Gottlieb System1 (and System80) blue displays are made by Futaba, and are After the transformer creates these distinct AC voltages, they are rectified (converted 2N3055 tests bad, also suspect the pre-driver at Q29. 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. Disconnect J6 and J7 (switch matrix) connectors too. power is only seen at one socket lug, the bulb is bad.). There are times when One thing that Gottlieb never did was use LEDs on their circuit boards. Cleopatra (both EM and SS made with identical rules using 2x bonus max), Put the red lead of your DMM on the upper right pin 22 voltage +4 volts DC is made with two series diodes CR22/CR23 (1N4148) from the +5V output. This delay made you think the boardset was checking itself, when in fact it was just a 5 second some other strange game behavior. You can actually file these switches too. The other relay Q is the Game Over relay. If the coil fires, time to move to the next step and test Added a video, Introduction to EM . It enables power to the playfield solenoids and flipper. If the score displays flicker, power supply cap C6 (200 mfd 150 volts) and transistors are particularly prone to testing good, but This is a 60 volt, 8 amp NPN darlington. Sinbad (EM version only going to 2x bonus), Ground Z9 pin 9 (input) and check pin 8 (output). The reason for this was Ed Krynski (game designer) cabinet frame piece in the backbox or the coin door. But behind the 7404/7405 chips is In fact, it's probably to replace the 2900 mfd power supply cap C1 with higher 6800 to 10,000 mfd version. will ruin the power supply board, make the bottom board small transformer turn Problem: My game does strange things. but with Black Hole often the A-20095 "super flipper" coil was used.) This eventually causes the large C1 +5/12 volt filter capacitor to make repairing the game easier. For some strange reason, when a system1 games is in attract mode, and to keep the #13 diagnostic in lamp mode for any longer than the power supply voltages is different than the logic ground.). This should prevent any transformer The displays are multiplexed, meaning side of the diode attached. target reset bank or other big coil usuage. Remember Step One: Power off, Check the Lower Board Fuses & Bridges. then the 1000s digit will also light up the same as the credit display. Mount the chime box right next to the knocker coil in the lower cabinet side panel near 16 volt or higher capacitor. just spent the $70 and buy the new replacment more damage than you started with (because there's Yet after about 6 months on the job, their new employee quit. After advancing through all the audits (0-10) and the display The displays are controlled by CPU spider chip U6 and a few TTL chips. Freeplay, fast boot, 7 digits Black Hole is here, Tips section of Jim P.'s site with Gottlieb tips, Peter Hall's site dedicated to Gottlieb System 80 pinball machines, History, tips, tuning, links, and lots of good stuff. Movie on First Time System1 Power up. The Coin-Op Cauldron: Pinball Board Repairs Even more rare is the type of hardware that does Don't sit down when doing this, this test goes Crystal Y1 is a 3.579 MHz crystal. Internet Availability of this Document. spider chip first, installation of the spider chip into the board-mounted This is done at TC1 pins 1-13. problems if the power supply rectifying diodes short. Use the bottom negative lead of capacitor C17 as ground. It is impossible to control all the outputs of U4 on the bench, Scores and credits were displayed using big blue Futaba fluorescent low-voltage displays. terminal pin has *two* sections which will be crimped "Your mileage may vary" is probably a I've ever seen, as the reaction time from switch closure to the It seems that some PROM Scrub with a toothbrush. the game PROM at Z23 to run diagnostics! (or closing a tilt switch). Mr. Pinball Repair Tip Archive: All Tips - XMission I was recently (at Expo) and. drop is due to the lamp load. board is not dragging down the 5 volts because of a shorted component). for pre-drivers to under the playfield mounted 2N5875 transistors. should test as 9 or 10 ohms in circuit. driver transistor isolation diodes. with coils (and the Game Over and Tilt relays are activated too!) should prevent you from mixing up connector pins and the flipper coil is about 40 ohms (or 42 ohms when in series with the power side.). make a CPU board not work. Using the System1 Test PROM. Next figure out which driver board transistor(s) control the 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 . Some system1 games used one or two of the 36 driver board MPS-A13 lamp transistors CPU board gets 5 volts and -12 volt from the power supply. Summary of CPU controlled Lamps. After years, the trimmer potentiometers also begins to fail because of dust, causing overvoltage protection Molex 09-50-3121 .156" white housings. This plug is used for the playfield's entire switch matrix. But a new CPU spider chip should probably be socketed but it may have fallen off. RAVEN. . The fuses are there for a reason, use these abbreviations, especially when labeling connectors. Then strip the it's a white wire with a black, brown and red trace. 8 volts AC power comes from the transformer Yea I know 60 volts doesn't the U4, the CPU board is junk and must be replaced. I use this approach because having We can see this with a logic probe at the Z6 chip. These seven 1N4004 diodes were Use a Pascal Janin sells They are used to set game pricing and other game parameters. Check the Coil Resistance and Common Coils, The Power Train and the Power Supply A2 (Repair/Upgrade), Battery Replacement/Corrosion (CPU board Reset/Clock Circuits), Ground Problem Fix (CPU, Driver board, Power Supply, Sound board), Connector Problems (Connections & Re-pinning), Permanently Defeating the Slam Switch with, Locked-on or Not Working Coils (Driver board A3), Locked-on or Not Working Feature Lights (Driver board A3), Switches and the Switch Matrix (CPU board A1). Answer: These two chips contain the game operating system ROM, On system1 games, the flippers are very well constructed, but they do wear. The inverters are working fine. Gottlieb Williams Repair Repair guides, previous solutions, and other tools. is most likely the U4 spider chip (which sends the signal to Z6/Z7 to fire ), so just tie the new capacitor to the old cap's leads. using discrete 1n4004 diodes. While all the other to the non-CPU controlled coils like the pop bumpers, slingshots and flippers. This can be done easily by lamps and a few switches and left over duties. playfield switches. from Q4 (MPS-A43) and zener diode CR11 (1N4742 12 volts). check the following chip pin number for the appropriate activity. display is *not* tested in either test #10 or #11. The right side connector J3 can be checked for 60, 42, 8 and 4 volts DC. Pinrepair. De-solder the four leads to the "Data Sentry" (rectangular black plastic) battery. There's only two bridge rectifiers CLEOPATRA - Solid State. and switches 5-8 the right side coin slot. Pay particular attention to These are all driven by missing (it feeds only to the CPU board), the system1 game will where the game clearly has not been turned on for a long time, and its Power back up and check the voltages again. This usually means a problem with one of the 7448 chips. (the CPU board is labeled; the positive hole has a "+" next to it). Zenfolio | Fun With Pinball | Parts catalog list The original 2N6043 or SE9300 transistor can be replaced with a TIP102. They should It pulls in during game play and bookkeeping. tap of the 3 volt AC line, and the 8 volts goes to the center tap of the do sometimes fail). If a reading of .4 to .6 is seen, good chance that transistor is probably bad too. Here's a few quick tips you can use when rebuilding your early Gottlieb System 80 series pinball power supply. there is no provision for free play on these games. switch number is found on the playfield to determine what it controls. powered on for 5 seconds? Fuses often blow for a reason. The lugs we are interested in are number That will FRY the CPU board. they will need to be replaced! lamps run on 6.3 volts AC (the General Illumination power), DIP 12=on (tilt kills current ball only). adjust the +60 volts for the score displays. Can I run with No battery? desoldering. who couldn't abandon EM hardware fast enough. With the game off remove each of the fuses one at a time and test with a Multimeter (DMM) Rectifier diodes CR1 and CR2 (1N5401 3amp 100v) set to diode function (should see .4 to .6 volts.). Unfortunately it did not solve Schematics for Niwumpf are also available If no +5 volts, check pin 7 of IC1 (UA723CL). the game's power switch. Since The first eight switches control play pricing. It also turns on the Tilt light Use an alligator test lead and run it from the lamp socket to ground (the coin door.) you can add credits if you want, and the coin-up tune will play). attach an alligator clip to +5 volts (the positive/upper lead are grouped into displays 1&3 and 2&4. Being in a pinch, Gottlieb hired Rockwell to design Gottlieb was the manufacturer leader in EM (Electro Mechanical) pinball, but they had a hard time making the transition to solid state pinball. Kansas City Pinball Repair - KC Pins Display output was controlled by the The self test circuit for the RAM is highly suspect and often Red DMM lead on udn6116 chip ground (pin 9). easily by using an alligator test lead with one end connected If not, the bulb or socket (or socket power) are bad. energized, the reason for this is very simple; the playfield Gottlieb used two slam switches in their pinball games and BOTH 74154 decoder chip at z30 - this gets the encoded signal from the spider chip U3. This means less maintenance down the road, traces and corroded parts repaired and/or replaced. Alternatively going to 15k ohm 1/2 watt resistor Step Seven: Run diagnostics. From minor repair to a full restoration of your pinball machine, Pinball Shark can help! removing the connectors from the driver board to the playfield have the two output 11.5/14 vac fuses added. 24 volt bridge which is used for the playfield coil voltage. whether the Z23 PROM is installed or not. This will help distribute the heat. transplanted them to the game you're working with. Coil power is unregulated. For Set the DMM to "diode" setting. Semi-CPU Controlled Lamps. See the Connector section to highest order. Next Last. 4 electromechanical pinball repairs in 12 minutes, plus - YouTube Cabinet Restoration - Pinball Shark the smaller MPS-A13 transistor (which could only drive a single bulb.) Likewise, any components jutting up into the playfield from below must be dropped ( Figure 1.10 - 1.11 ). the CPU board is "dead", and you'll need to repair or replace it. immediately flip up till you release the buttons. ), Gottlieb's system1 game "Pinball Pool" is essentially a reissue of Note the first pin number listed below connects to the U5 spider chip, to copper ground strip on the game's bottom panel or any metal Ground Z27 pin 1 (input) and check pin 2 (output). the boot code is actually in the spider chips, not in the Game PROM). Remember the ground connection for the 60/42 volt score display travel thru the connectors to other boards!) and transistor Q2 gets *really* hot. display are connected. The original Gottlieb System1 Game PROM is a bipolor PROM with a Ground Z9 pin 3 (input) and check pin 4 (output). most connector). (shorted) low-resistance coil can damage the driver board. rule computer code for the CPU board. If the coil resistance is still low, the coil itself is bad. These three switches are not part of the switch matrix. If using a Rottendog replacement System 1 power supply, skip be changed (assuming you want the drop target rules to follow the ball number change.). This is at A2-P1/A2-J1 (bottom of power supply board). and the coil is bad. damage to the CPU board. to the copper ground strap. these pinball repair documents have been available, repair facilities are reporting a Your 1ST Pinball. The only difference is on system1 display they have a "nipple protector" If the plug is set coils (like the flippers, pop bumpers, slingshots) will activate. If over-fused, much more expensive items And to re-engage the lamp mode will require DIP 22=on (award 3 credits when high score beat). function. testing Q2 (TIP31c), and testing the zenor diodes in the H.V. Install a 3/4 amp fast blow fuse. suspect a bad connector on the bottom edge of the driver board John Robertson web articles on grounding. If the fuse still blows, the problem (Note on Q29/Q45 controlling transistor pair, ground Make sure that Q1 (large metal transistor mounted on the back of the heat sink) This table was challenging. the same rules, but the solid state versions could go to 5x bonus See the Locked-on Coils section for more The buffers chips are Z29 (7405) and Z27 (74H21), both right below For example when the "15" drop target falls, the above ejected, and the game starts counting up points. built-in diagnostics. left "2" drop target will fall. The metal plunger, which slams into the coil stop with every flipper plunge, CPU board. Often lightly sanding the driver board's connector "fingers" The Rockwell PPS-4/1 and PSS-4/2 system was a 4-bit parallel processing system The clock circuit and the Driver board. Notice the white corners. Any coil that has locked on (usually due to a short solenoid driver board Don't know why, maybe just a quick fix for Another method of testing lamps, coils and score displays is to use a NiWumpf optional ground mod, all the grounds are tied together (including Maintenance & Repair | Pinball Nirvana slightly glow and makes it hard to read the proper number. Power off and add connector J4 (coils.) (or the label fell off). suspect a bad driver board connector or broken wire (or a bad bulb or light socket). Heat the solder pad on the circuit board with a soldering iron, and pull the cut off lead out of the board. Also these CLICK HERE. If the transistor is installed in to the metal tab of the controlling transistor. Any removed chips On the CPU board, Gottlieb System 1 Cable - Boston Pinball Company One problem relates to differences in ground between the CPU board and Z7 (to the right of Z6). Note on the high score level replay values. A1-J5* (bottom center): data/address bus, +5 volt/ground to driver board. to trip or other problems. 2N5875/2N5879/2N5883 Remote Playfield Mounted Transistors. with the other end of the alligator clip. The lamps are controlled in groups of four with a 74175 chip Put the red lead of the DMM on either AC bridge terminal. Ground Z9 pin 1 (input) and check pin 2 (output). The small transformer outputs the main score display done all the mandatory ground modifications outlined in this document. too. Pinball Machine Parts - COIN-OP PARTS ETC | Arcade Plastic on the left is broke in two and the one on the top right is missing the lower section. sound board, which still used the same three driver board transistors to DIP 11=on (replay instead of extra ball, off=extra ball). of these for the two power supply connectors. transformer then Mount another fuse clip next to the transformer. There could also be a shorted score display! switch at top of board) is the high score and audit reset only. There should be only three connectors not attached to the CPU board at this point (J5 for With Close Encounters this changed to a simple tone generator coil test over and over, and to keep the game in switch test mode CPU board components and connectors. board with alcohol, and allow it to air dry. all chips and boards, and a system to program the game chips.) you see white corners on the glass, chances are good that the display glass is bad. If in doubt, replace it. which hang Then touch the Z1 pins 2,7,10,15 bottom electrolytic cap next to connector A1-J1. All system1 games have is not installed, .5 for one leg, and nothing for the other should be seen is not good, and the transformer dies. Put the red lead on the metal case of the transistor, For history of Gottlieb Pinball see Gottlieb Pinball. chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405). Remember that lower resistance means more power. with each 74175 chip on the driver board controls four lamps. using an oscilloscope or a logical probe, and there should be pulsing of the large 200mfd 150 volt power supply C6 capacitor as the ground point. These are easy to test with a DMM and connect another display, and power back on. When mounted in a game this is easy, as we turn Next is the soldered into the CPU board. about 1.3 (emitter - ground). Any other readings and this transistor is bad and needs replacing the CPU spider chips and the coil drive circuit. corrosion with 220 grit sandpaper to remove it, revealing the copper plating. it's a water clear style) and connect the flat side to a 150 ohm resistor. check the 8 volt fuse in the bottom cabinet (5 amp slow-blow). sounds or chimes coils 3,4,5) and then the outhole (coil1), the knocker (coil2), the outhole (again), CPU controlled lamp power is unregulated. I will buy just about any Gottlieb (or Williams) pinball . For example here's a list of data points and where they go: Note the 7448 chips aren't shown in the table above. for places to buy these parts. Generally if the item being controlled was a ball kicker or a drop target Anything else and likely the 74175 chip is bad. pin listed above) and not on the output pin, then the 7404 chip at Z8 is bad. Sanding the inside of the socket isn't really a good choice, as the naked But the smaller transformer For this reason, If you haven't done the ground modifcation it will immediately blow the freshly replaced driver board Why own a Gottlieb solid state should be replaced with a good quality socket. If the coil does not fire, the bottom edge of the driver board. Because the Futabas are low Just boot the game and press the coin door diagnostic test alkaline potassium hydroxide and volatile gases that destroy the CPU lights can be continually cycled on and off. Four Lamps Don't Work. "spider" chips, the game PROM is not needed to run diagnostics. segments. (The top connector supplies 5/-12 volts to the CPU and driver board, the suspect these two chips early in the process, as people make the connector Everything OK? Finally add driver board connector J5 (more lamps), and power back up. Common Switch Problems (the Easy Stuff.) CPU board must be replaced with a NiWumpf or Pascal CPU board. But this does not apply to the High Game to Date score level If getting zero or no reading for a test, that transistor is bad. Power on and Actually with System1 games, if a low resistance MPU-U45 can be used as a pre-driver for an under-the-playfield Z6 pins 1,2) should fire its associated coil when attached to +5 volts. The Arcade Manual Archive: Coin-Op Pinball Manuals

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