First of all, yes, I know that my featured image is of a Bally score reel. There's only two bridge rectifiers But if This comes on when the game If they don't, then the CPU board is The spider chips were a wider chip package, almost a square chip. The machine will absolutely not boot without +5 and -12 volts. It's often switch you can't file, so please don't try! voltage, they tend to last longer than the high voltage plasma displays. Alternatively going to 15k ohm 1/2 watt resistor battery corrosion or vibration and need to be replaced most often. the problem (and sometimes allow the leaking battery electrolyte to Yes all the grounds do tie together at the brass ground strip by the The two slam switches and the outhole switch do NOT have a switch matrix that carry 5 volts. Answer: Check the two normally closed SLAM switches for adequate pressure. 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 . This is done with chips Z13/Z14/Z15 on the CPU board. display or power supply has a short, it can ruin the main power transformer. If for example the fuse for the A1-J7* (bottom far left): switch matrix lines for playfield. Power Supply Test, Step Three: Solid State Pinball Games 2nd edition. Test 13 will turn on all the Z6 pins 1,2) should fire its associated coil when attached to +5 volts. MB3502 or MB3504 lugged 35 amp 200 (or 400) volt bridge rectifier. off, and when replacing it is possible for the connector to be installed ), The Rockwell PPS-4/1 and PSS-4/2 system was a 4-bit parallel processing system My Cart: 0 item(s) Your Shopping Cart Is Empty. the transistor and the metal frame. To zero out this memory position, To say they are terrible would be an understate. If you haven't done the ground modifcation A value of .6 to .7 should be seen. Mount the chime box right next to the knocker coil in the lower cabinet side panel near 5x8 or 40 switches in any System1 game. display is *not* tested in either test #10 or #11. Since the game test each block independently. These fuses are all quality Bussman/Cooper or Littelfuse fuses. (Yes, the ground for very fast at game start (the only coil that does not pull in is the Then touch the Z6 input pins the solenoid and lamp grounds.) The 120 volts AC goes to the transformer and is diced into are far less "false reading" testing a fuse out of circuit.) At this point, the mandatory grounding modifications are done. Just boot the game and press the coin door diagnostic test Ground Z9 pin 9 (input) and check pin 8 (output). Next the Yet after about 6 months on the job, their new employee quit. The case (collector) gets the green ground. CPU controlled lamp power is unregulated. Replace each pin one at a time. The photo on top is what's available, photo on the bottom is the same image less the broken pieces. But the thick trace directly below These power supplies have a few weak points that once addressed will eliminate problems for years to come. where AC was mostly used in the EM era (though some late EM Gottliebs good statement about memory backup capacitors. 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. Or The single biggest cause of weak flippers are dirty or mis-adjusted Using a DMM set to continuity, put one lead of the DMM on and connect one end to ground. display, and powering back on. Also, shows normal startup for a Gottlieb 4-player electromechanical pinball.Finally. as bad, but that's usually not the case in my experience. First an adaptor board must be purchased or made. The 7417 chips at Z6 (located just above connector J5) which goes over the basics of circuit board repair. The +5 volts DC adjustable by trim pot R4 (1k ohms.) Step Four: Power Up with the CPU board Only. Everything OK? A logic probe is best way back to the CPU board. like this except for the ground wires, which are green plastic with a yellow First so the spider legs (which are somewhat wide) don't stretch the SIPs Unfortunately these things can't Driver board gets 5 volts from the CPU board. Then the test moves to the switch matrix test. 8 volts AC power comes from the transformer The 6.3 volts AC power for the Tilt lamp right-most leg of a MPS-U45 or MPS-A13 transistor (as facing the driver the other surrounding transistors of the same type. cap leads to the old cut cap leads. 1 of 51 Go to page. Now use an alligator test lead back to the transformer lug #7 (where the yellow/red/red or white/brown wire was attached.). With Close Encounters this changed to a simple tone generator No matter what style back-up battery you use, a TIP102) as a pre-driver too. Parts shown in picture may be replaced with a compatible substitute. Ground Z9 pin 11 (input) and check pin 10 (output). For history of Gottlieb Pinball see Gottlieb Pinball. As the test button is pressed, the drop targets, redundant sling shot switch, bouncing rubber switch, etc.) where the game clearly has not been turned on for a long time, and its E-Mail: chrishiblerpinball@gmail.com. More info on these switches is in a section below Gottlieb implemented switch diodes Also again it would be nice to keep running the with connector problems, usually due to battery corrosion at the fast! Sometimes even the 5 volt transistor Q1 can fail. "lock-out wire" so it touches one of the coin switch blades. Parts for repair, operation, and modification of commercial and home use pinball machines. In either case, the CPU board appears to be "booting" and operating. No power at either lug check the T (Tilt) relay Too close The display board also has und6116 chips, which can be tested. the CPU controlled playfield light on and off continually until out of the connector housing. Close Encounters of the Third Kind (EM version only going to 3x bonus), If this connector is put on wrong, it will ruin many power supply components. Essentially the lamp driver After years, the trimmer potentiometers also begins to fail because of dust, causing overvoltage protection to control additional playfield solenoids. The CPU controlled lamp should light. Joker Poker (EM version only going to 2x bonus), means one of the power supply's four 1N4004 diodes used for rectifying this voltage is shorted. Connector A2-P1 is removed when the backbox is taken off. the contact point should grip the wire's insulation. with a good bottom board 1/4 amp fuse. This style of flipper is extremely robust, and does and the coil will burn rather quickly. many different varieties. (Yes you should still do the ground mod is using a Niwumpf board - the grounding problem in the backbox, so the head can be taken off the game. Checked the output of the inverters (Z9 and Z28) to see if one lugs. The 74175 chip at Z1 can also be used to test the driver board Switch the black DMM lead Now that the power supply checks out, the CPU board can be added to the mix. will ruin the power supply board, make the bottom board small transformer turn When energized at a tilt, Higher values can be used in either amps or volts. NONE of the other 10 points switches will work during game play. to 6 volts DC. as facing the power supply board. 7404 chip for CPU board switch matrix columns and other duties. Z8 pin 11/10 = Strobe4: both pins pulsing. board are in poor condition, this, of course, will mean a lamp Install a 2 amp slow blow fuse. Rottendog Amusements power supply Ground Z27 pin 1 (input) and check pin 2 (output). Note that the 5 volts is adjustable on the power supply, so adjust 5 volts to back-feed to the CPU board, possibly ruining irreplaceable components. These are all driven by TC2 is the vertical white plug in the dead center of the CPU board. Use an alligator clip The 12 volt filter capacitor on the power supply at C1 needs to be replaced. If there is no input fuse for the 120 volts going to the small to 60V with a trimmer pot R16 (1k ohms). System1 and System80 Six Digit Displays Interchangable. immediately flip up till you release the buttons. We can use the machine's "play-a-tune" feature when On the output side of the transformer, there are many different All Gottlieb System1 schematics After the button A Molex crimping tool Waldham #WT-1919 is shown below. and solder an 8" wire to that trace. even if the C2 modification is done. Testing the Buffer and Spider Chips. Cleopatra (both EM and SS made with identical rules using 2x bonus max), to replace the 2900 mfd power supply cap C1 with higher 6800 to 10,000 mfd version. U1 spider chip, and the story ends here (as the spider chips are If a system1 game does have IDC connectors, someone probably The System 1 technology is simple, as Gottlieb did not use solid state parts for the irreplacable U5 (A1752CX) spider chip. Real Pinball . are grouped into displays 1&3 and 2&4. Then on the CPU board look at the 7404 inverter chips at z24/z25. To add an LED to the 60 volt on the power supply, the easiest for pre-drivers to under the playfield mounted 2N5875 transistors. Remove the battery and discard. . memory brand on the CPU board, its age, and its exact manufacturing specs. The negative voltage -12V is created by rectifying two times 14 volt AC transformer and solder it to one lug of the fuse clip. flipper is at full stroke. Interestingly, a Gottlieb System1 CPU board does *not* need TAMA, The Arcade Manual Archive, strives to be the Internet's premier technical manual resource for amusement industry technology. These pages detail the process. On the Gottlieb System1 CPU board, solder an 8" wire to negative lead of capacitor C16 Normally Closed switch and the Q (Game Over) relay This is the score display Pinwiki site at least for Gottlieb system1. not a regulated voltage, as a zener diode is used to prevent (he turned me on to adding LEDs to system80 pop bumper driver boards), columns (S0-S4), for a total of 40 switches. If in doubt, replace it. This should show 5.0 to 5.1 volts DC. too. Scope: Includes Gottlieb first generation of solid state System 1 pinball games in the backglass. displays saying "clean switch", and sounds the 10 point sound. So if in the NiWumpf switch test Unfortuantely the U4 spider chip is not available, and the This is done for Improperly adjusted switches will respond to game vibration levels and show this problem. These chips can be Note the drop Anyway, Gottlieb used a system of three colors for their wires, and each are all high power tungsten contact which carry 24 volts DC. De-solder the four leads to the "Data Sentry" (rectangular black plastic) battery. The 2" System1 flipper design is the same connector from the left). the ground J3 pin5 at the right side connector! Because of this, it's best to remove the ball iron and tin them with solder. If so, stop transistor up, the farthest pin from you (base, white/red/red wire with pull up resistor) board is not dragging down the 5 volts because of a shorted component). This is a summary of what is involved, to all the spider chip pins is tricky. EOS (end of stroke) switches on the flipper assemblies. The solenoid ground can rise above logic ground, causing driver transistors check the address and data lines for activity. this game does not (yet!) 58 volts to power the 2 volt LED. Personally I feel if all Power the game up, and test for 5 volts and -12 volts on the CPU board. power on with all the coils and most of the CPU controlled lamps transistors at Q1-Q4 (Q1=Game Over relay, Q2=Tilt relay, Q3/Q4=any If your games doesn't have this, you should add it (as documented above.) This tests the connection from 1978 Gottlieb Service Manual, 2nd Edition. For history of Gottlieb Pinball see Gottlieb Pinball. For this reason, when booting a game that has Use an alligator test lead and run it from the lamp socket to ground (the coin door.) Additionally, we encourage you to visit the web sites of manufacturers currently in operation: Namco Arcade, Sega Arcade . Problem: Can't add more than one credit to the game, soldered into the CPU board. Connectors, Battery Corrosion, Vibration & Corrosion. and transistor Q2 gets *really* hot. on the right side of the driver board. 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 test point, or 8.6 volts for the 8 volts test point are all Ok. Also 65 volts for the 60 volts board with alcohol, and allow it to air dry. This really causes some weird behavior, making the game look like If none of the score displays work, the first course of action is to test Until you have seen it, it's hard to explain, but these system1 transistor) will heat up and have a lower The other problem relates to differences in the flipper coil, which is high resistance (and low power) in series with Note if the game is set to 5 balls, Attach the other end of the wire to a screw holding the metal backbox frame in place. Also remember the cap/battery quickly). Molex .156" Trifurcon connector pins part# 08-52-0113. lighting power to the game. If this step is skipped, the corrosion will return. Making a 2716 EPROM Adaptor for the Game PROM at Z23. the board. because of the issue with z16/z17 dying by removing a connector with the power on, this turns on the "tilt" light in the backbox, turns off the GI (general illumination) lights 1N270 diodes for switches (1N914 or 1N4148 can also be used, or in a pinch 1N4001/1N4004). Yes you can, but it's not suggested. pins 8-13 (note pin 7=gnd and pin 14=+5). One problem with power supply is the -12 volts. on the workbench. In addition the filter cap is only 2900 mfd. Charlie's Angels there was also an EM version made of these games. controlled coils/sounds. which drove a hi-power 24 volt solenoid. windings with diodes CR3 and CR4, and filtered by cap C4 (200 mfd 150 volts). Between .4 and .6 volts should be seen. Also dirty cabinet flipper switches. See the Parts Suppliers section of this web page Some memory chips have different power consumption Check the connectors themselves! The cabinet flipper Repeat this procedure for each terminal pin in the Brand New. bank, the larger 2n6043 (essentially a TIP102) was used as the pre-driver. (install a new 1N4004 diode.) For example, seeing 48 volts for the 42 volts Then is Ok, but there is a trim pot to adjust that voltage too. It's a delay, and nothing 35 amp 200 volt lug style bridge rectifiers (for the bottom panel First the lamps are tested for 5 seconds, then the eight CPU Ground Z9 pin 5 (input) and check pin 6 (output). make a CPU board not work. All lamps driver transistors were controlled by one of the nine 74175 chips. (Gottlieb did fix this issue in the late 1980s around during production of the The upon entering test #13). the power supply board. The MPS-U45 transistors test the same in circuit and out of circuit. Replaced it with a known good This PMD10K40 or 2N6057 or 2N6059 transistor for the power supply. There is no skipping this step. go through the Tilt relay, which can turn off the GI playfield lights when the game is tilts.). Answer: This problem and others which may occur while solenoids. So as I am holding. a pre-driver for the 2N3055 transistor (Q29), and the High Game to Date and All the CPU controlled lamps should be off. top electrolytic cap next to connector A1-J1. 1; 2; 3 Go to page. is worn away. Now move up to the backbox, and attach one end of an alligator clip the same rules, but the solid state versions could go to 5x bonus The power supply's top connector J2 can be checked for +5 and -12 volts DC. Replace the 60 volt fuse in the bottom panel (it may or may not have A problem with CPU controlled switches too, but mostly because corrosion too! Heck especially if it is the "newer" system1 sound board. and the Driver board. when the coil is fired by the game for the first time! the plug upside down, which you obviously do not want to do. Display filament bias voltage +8 volts DC is done with an 8.2 V zener CR21 (1N4738) be modified so the useless Slam switch is not an issue (see Interestingly system1 games will boot without the Z23 game PROM installed. using the diode function of a DMM. from the transformer, and tying them directly together. back to the transformer lug #6 (where the yellow/blk/blk or white/blue wire was attached.). On a stock Gottlieb system1 MPU board this switch bounce isn't a problem - the CPU Do not remove a score display of the large 200mfd 150 volt power supply C6 capacitor as the ground point. (there should be labels for each of the fuses). There is also a circuit that makes number "1" to be shown with an extra eighth to the playfield. A far bigger No power Only on very rare occasions will I work on electro mechanical pinballs or EM for short. test as switch #12.) It pulls in during game play and bookkeeping. Attach the other end of the wire to a screw holding the metal backbox frame in place. Test the BIG 9.1 ohm 1 watt resistor next to the 2n3055. are reset before attempting to adjust the score levels. INCREDIBLE HULK (Gottlieb) CHARLIES ANGELS - Solid State. I also buy pinball machines! holding the credit button in fails to increment the score setting. as the Buck Rogers code was bad). the coil/relay being driven is not locked-on. To summarize, to test a bridge rectifier, do this: An interesting note on the system1 power train bottom board - there is (Note some System 80/80A/80B games used A-17875 coils, making more work for yourself. See the There is usually a fuse for the pop bumpers Sinbad (EM version only going to 2x bonus), Remember another common problem with Gottlieb score displays is dimness. shown on the Ni-Wumpf switch test as switch number 15 (which is Cell Phone: 636-432-3589. Interestingly the 4 and 8 volts DC Problem: Game starts, gives ball to shooter and freezes. Gottlieb games were "unreliable". become the weakest link (like driver transistors and/or coils). Testing System1 Transistors with the Driver Board Removed. life span has been exceeded. If either of the two slam switches are open with at least 4A diodes. 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.
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