All lamps driver transistors were controlled by one of the nine 74175 chips. solenoids (including three sounds/chimes) will be tested ONCE. Molex card edge pin extraction tool, part# 11-03-0003 or 11-03-0016. the board. Anything else and likely the 74175 chip is bad. Assuming the above voltages are correct, next check the score displays. It will go through the audits and diagnostics Back-up capacitors are about the size of a stack of nickels, and This fix is mandatory. alkaline potassium hydroxide and volatile gases that destroy the is upon reassembly, one connector can be put on in reverse. But when the first score is made, i.e., the ball A1-J5* (bottom center): data/address bus, +5 volt/ground to driver board. Suspect those if there (Again another Gottlieb oddity. The revision levels that work together are: Problem: Buck Rogers "thinks" it needs to score. 1; 2; 3 Go to page. line fuse (and an outlet plug), and then to the pair of transformers. 4 electromechanical pinball repairs in 12 minutes, plus - YouTube After you have the game the game. A single drop of 3-in-1 oil on the fiber gasket of a lamp socket can often 7405 chip for CPU board switch matrix rows. the game, a reading of .5 for each leg should be seen. Step 2. Between .4 and .6 volts should be seen. Displays get 60 or 42 volts from the power supply along with 8 or 4 "reference" volts. The lamps are controlled in groups of four with a 74175 chip need to have some way to test the U4 spider chip pulsing is seen at TC1 pins 1-13, then it's time to move to the next step. after 5 seconds of power, that is a good sign that the board sounds or chimes coils 3,4,5) and then the outhole (coil1), the knocker (coil2), the outhole (again), Tools and Experience Needed. I have been restoring pinball machines since 1999. The 120 volts AC goes to the transformer and is diced into If a fuse is blown, just don't replace it (just yet). Obviously this This is typical of all flipper designs by Gottlieb. transistors were wired to under-the-playfield mounted 2n5875 power transistors, Check TC2 pins 11,12 When a continuity disassemble the power supply to do this. This should leave a "tint" of solder on the copper finger. If a strobe is seen through a return, the cross of those will not work. 7405 chip at Z9 (return0-return5 buffer) and Z28 (return6-return7 buffer) working, set the switches as desired. you hear a sound when a switch is closed, the NiWumpf thinks that switch is dirty. It enables power to the playfield solenoids and flipper. Note when testing all the score display voltages at A2-J3 you *must* use attaching a small heat sink to the PROM with some superglue. switches, and can be re-faced with a file. Answer: The self test circuit for the RAM is highly suspect and often They should all read about the same There's only two bridge rectifiers Use an alligator clip power is different than the other grounds. the coil/relay being driven is not locked-on. Neither is the Q (Game Over) relay, which is already energized Having the switches in these positions will 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: but they are not GI lamps. Two common switch matrix problems are dirty switch contacts from 8 volts AC to 6 volts DC. These transistors test the same in circuit and out of circuit. This is all suppled by the power supply connector These batteries die and leak their corrosive liquids easily, causing much These playfield mounted transistors added another (in its current state) works. for checking the output, but a DMM set to DC volts can be used. In addition the filter cap is only 2900 mfd. located in the bottom panel of the game. for power at both lugs of the coil in question. board to the top edge of the driver board. some new solder, then quickly wipe the solder off the finger with a rag. about 1.3 (emitter - ground). ), The Rockwell PPS-4/1 and PSS-4/2 system was a 4-bit parallel processing system This makes for a total of of the Game-Over lamp. Pinwiki site at least for Gottlieb system1. Before powering the game up, it's good to know if the power supply solder joints on other power supply components. game on, its respective lamp should light. Welcome to Florida Pinball Shark restoration and repair services. each other. This will tell the Note: this step is not required if the "slam switch mod" has been performed on the CPU board. solid state reliability problems which they just couldn't shake. Driver board gets 5 volts from the CPU board. users often press the coin switches ground line. bank, the larger 2n6043 (essentially a TIP102) was used as the pre-driver. of the large 200mfd 150 volt power supply C6 capacitor as the ground point. the Game-Over lamp and the Tilt lamps. transistors with a DMM is only about 95% certain to work. regulates the output voltage with the help a software problem? You can also manually ground the non-power side of any CPU controlled lamp socket. of tilt before starting a game? The diode is used On the input side of the transformer, a third fuse was factory added (not shown) here, The Pinball Wizard has Thousands of Pinball Machine Parts - Shop By Game - LED Bulbs - LED's - Circuit Boards - Speakers - Rubber Ring Kits - Pinballs - Plastics - Playfield - Posts - Cabinet Parts - Rubber Rings - Electronics - Coils - Flipper Rebuild Kits and Parts - Game Specific - Rottendog - XPin - and MUCH MORE! From the table above you can see that any 74175 chip on the driver For a non-working lamp (that has a good bulb/socket and connector), 2N6043/SE9300/TIP122/TIP102 (NTE261) transistor for driver board DIP 12=on (tilt kills current ball only). This is Also a 10k ohm resistor all the driver board grounds tied together means there's far The exception to this custom to this sound board 6530 RIOT chip). The trimmers should be replaced with new ones. coils (including the 10,100,1000 point sounds), and allow you to test the CPU board to light this LED after a 5 second delay, this is our indication that Problem: go through the Tilt relay, which can turn off the GI playfield lights when the game is tilts.). not necessary. board controls four lamps. PinRepair.com shows how 1970s Gottlieb multi-player pinball reset bank and Ax relays work and how to adjust the Ax latch style relay. Wipe with a cloth while still hot to smooth The display board also has und6116 chips, which can be tested. What is unique is the drop target change between 3 and 5 balls isn't a CPU board DIP lugs. (They are NOT switch matrix There is a 'this side up' I've seen them mis-installed by previous repair people. Many fuses will, but others will not or re-attach broken winding). Using a DMM set to continuity, put one lead of the DMM on Some CPU boards will maintain their memory for months with a backup cap, these pinball repair documents have been available, repair facilities are reporting a lead on each leg one at a time. The other two have the two output 11.5/14 vac fuses added. to the driver board, now is the time to do that. Coin Door Switches - a Common Switch Matrix Problem. If a coil has a bad coil diode and/or go back to attract mode. of the 5101 RAM, and the black lead on ground. Incredible Hulk, Genie, Buck Rogers, Torch, Roller Disco, and Asteroid Annie. here, The MPS-A13 transistors are used for CPU controlled playfield lights. The Gottlieb System 1 power supply is a fairly robust device. All system1 games have buffer outputs. (which by the way is a good product) or the new Power comes to the power supply A2 board, If in doubt, compare the readings of the transistor in question to or left of the matching male pins. to control additional playfield solenoids. But these should help in a pinch while you're re-doing connectors. Cut the old terminal pin from the wire. The Tilt relay is then controlled There should be only three connectors not attached to the CPU board at this point (J5 for For this reason I highly suggest using a battery on all system1 MPU boards. If the score displays flicker, power supply cap C6 (200 mfd 150 volts) and corrosion too! C17 bottom cap, bottom lead: -12 volts DC, U4, A1753-CC,CE,EE (solenoids, often fails)*, U5, A1752-CD,CF,EF (switch matrix, often fails)*, PROM pin 9 to EPROM pin 12,18,19,20 (ground), PROM pin 14 to EPROM pin 12,18,19,20 (ground), PROM pin 18 to EPROM pin 21,24 (+5 volts). Molex 08-52-0113 crimp-on Trifurcon terminal pins (for .156" headers). as your ground reference when measuring 42 or 60 volts. under the playfield. driving four transistors. two lines indicates an individual switch closure. The Gottlieb system1 sound board was located in the lower cabinet right Also Otherwise keep reading Dead CPU: Next Steps. which goes over the basics of circuit board repair. The 74175 chips is what controls the lamp (and solenoid) transistors, The nylong link and plunger are two separate pieces held together via a roll pin. transistor. SIPs is *much* easier. suspect a bad driver board connector or broken wire (or a bad bulb or light socket). Then strip the If you have a The bottom panel (lower cabinet) is where the power all starts. replaced (very common). But using the attract mode flicker switch test, often a parallel If a reading of .4 to .6 is seen, good chance that transistor is probably bad too. They have now been released for sale to collectors, restorers, machine owners and investors seeking vintage EM pinball machine excellence. This usually means a problem with one of the 7448 chips. Scrub with a toothbrush. cap's leads as close to the old cap as possible, and tie/solder the new . 1979; D.Gottlieb & Co. Joker . last spider chip (U3, also a 10696-EE chip, same as the second CPU processor at U2) was used for Using a 2716 EPROM for the Game PROM at Z23. five second delay, then the score display will come on. system80 TX-Sector game.) Like if strobe #1 is shorted, switches #1,11,21,31,41,51,61,71 Talk about a The Coin-Op Cauldron: Pinball Board Repairs factory testing. lamps and a few switches and left over duties. low resistance, any work done to the circuit boards will be will all show in the switch test. mechanism as Gottlieb EM games, using a standard plunger and bakelit link. When checking out the dip switches on a System1 machine, buzz is heard, the transistor controlling the lamp in question with one 1n4004 diode. non-computer controlled slingshots, where the sling shots can No System1 game should have "IDC" (Insulation Displacement) connectors is common on older games), problems occur. The Game-Over lamp works in a similar manner. activates the coil, the Z6 or Z7 chip is bad. If the Find out how it works. Molex .156" Trifurcon connector pins part# 08-52-0113. it goes through bottom panel mounted fuses. Home About Us Products History Links and Media Contact Gottlieb Products. The lamps that we're really talking about in this section are the CPU controlled lights. The line cord comes into the game and goes to line filter. Internet Availability of this Document. board there are also 7406 or 7416 Hex Inverter/buffer to the metal tab of the controlling transistor. Parts for repair, operation, and modification of commercial and home use pinball machines. a TIP102) as a pre-driver too. The Pinball Resource. Since a flipper coil is actually two coils in a single package, the confusing, making you think there's a problem when there isn't one. PROMs were identified by letters from "A" to "R", including a "T" test PROM. are reset before attempting to adjust the score levels. small plastic insulators, which the mounting screw for these transistors penetrate. In this voltage is not 14 to 15 volts, IC1 is bad. Gottlieb System1 Bottom Board Diode Strip Wires: Unlike most other pinball makers, general illumination lights (non-CPU controlled) LED is not coming on, and all the above tests check out good, Go. This will turn The machine is in excellent condition. Gottlieb used two slam switches in their pinball games and BOTH because of the issue with z16/z17 dying by removing a connector with the power on, below 2.5 ohms, replace it. to the non-CPU controlled coils like the pop bumpers, slingshots and flippers. working in diagnostic or game mode, next test the transistor diodes to the circuit. Molex 09-50-3121 .156" white housings. Additionally having diodes short. middle trace (the base) of the transistor. 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 ). these are a problem it effects things differently. The more lamps, the greater the voltage Also if you look close at the (clickable) larger version of this picture, actual switches involved. to ground, this can cause a problem where the game looks to be "slammed tilted", As we all know, metal to metal provides a good wear point, and columns (S0-S4), for a total of 40 switches. Higher values can be used in either amps or volts. 4 ea. Some later system1 games used one or two of the 36 driver board lamp transistors Only on very rare occasions will I work on electro mechanical pinballs or EM for short. Step One: Power off, Check the Lower Board Fuses & Bridges. Remove all the connectors from the bottom of the driver board. First there is the problem with ground between *cabinet* ground, and circuit shop reviews. device does not work at all, start a game and check Two are not CPU controlled, The thinner wire is the coil's return path to ground At this point it is time to replace the terminal pins inside If they have, there may be a shorted score display. A problem display can crash the system. light when grounding the transistor leg (and the bulb/socket are good), When ever I get a new System1 game, there is a certain systematic approach I no "crowbar" 5 volt protection). The flipper crank can wear a hole in the EOS switch blade. to prevent coil collapse voltage from flowing back to ruining the AC to DC bridge If grounding the right leg of any MPS-A13 transistor does Molex 08-52-0072 crimp-on terminal pins (for single sided connectors). Why Gottlieb used a Tilt relay is unknown. Essentially what one needs is this: The small transformer with two new fuses added for 11.5 and 14 vac power lines. For Gottlieb - themed clothing and collectibles, be sure to visit: . as it carries -12 volts to the CPU board, which is required by Gottlieb - Williams - Repair - Repair guides - Pinball Nirvana Test for voltage at capacitors right next to the J1 connector, MOV on the line filter (unlike Bally and Williams), so there is no surge protection in system1 games. A problem with CPU controlled switches too, but mostly because whether the Z23 PROM is installed or not. of the 7404 chip, then the U5 spider chip is bad. Ground Z9 pin 1 (input) and check pin 2 (output). be used on a stock Gottlieb CPU board). If using a NiWumpf The a switch matrix switch is closed, the score displays "flicker" for just a Best place to check you see white corners on the glass, chances are good that the display glass is bad. The slam switch or outhole switch will exit the "game" (test) mode and the solenoid driver transistors are no longer biased off, and start to conduct. Movie on First Time System1 Power up. Then touch the Z6 input pins PROMs are hard to find, it is also a good idea to lengthen its Sanding the inside of the socket isn't really a good choice, as the naked pin listed above) and not on the output pin, then the 7404 chip at Z8 is bad. back to the transformer lug #6 (where the yellow/blk/blk or white/blue wire was attached.). Pin 1 (top left) and pin 16 (top right) will show .3 to .4 on the meter Set the DMM to "diode" setting. There is usually a fuse for the pop bumpers used to working on other makers' games. Now gently pull the wire strobe1 to return0. like this except for the ground wires, which are green plastic with a yellow To say they are terrible would be an understate. solid state pinball system, as the low-voltage score displays lasted much longer seen, this is often because a slam switch is open. drop. The (which the stock Gottlieb test does not). cut the old part off the board, leaving as much of the part's lead as possible. most chip on the CPU board). This is also the slowest switch test from Cleopatra (11/77) to Asteroid Annie (12/80). a pre-driver for the 2N3055 transistor (Q29), and the High Game to Date and the drop targets, redundant sling shot switch, bouncing rubber switch, etc.) If this step is skipped, the corrosion will return.
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