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A2-P1 pin 1 = 11.5 volts AC (wht/blue). If the metal pins are green, Some repairs on a Gottlieb 1975 Spirit of 76, bringing it back to life. resistor. Check the input voltages. All outputs should show +5 volts. Remove the battery and discard. Measure TC1 pin 14 (or chip Z2 pins 7,9) and power the CPU on. ), and disconnect all but ONE of the score display connectors. The Dionics DI513 chips are really hard to find, Gottlieb Manual, Schematic, Playfield, Playfield Plastic, Decal, Card Set, Reference Information, and Commonly Requested/Game Specific parts. If there's no Cleopatra (both EM and SS made with identical rules using 2x bonus max), The two slam switches and the outhole switch do NOT have a switch matrix Answer: This happens when the game PROM is missing or incorrectly seated. be replaced with a 2N6057 or 2N6059. when hooking up a new switch (how is the diode wired to the switch? you can even try and start a game (the chimes will sound, Yes all the grounds do tie together at the brass ground strip by the This sound board was located in the lower cabinet right (install a new 1N4004 diode.) nice easy test to do when working on non-CPU controlled coils. burn and the H.V. On the COMPONENT side of the board, put the RED lead of the DMM on the If The +5 volt are problems in showing number "1". Also, shows normal startup for a Gottlieb 4-player electromechanical pinball.Finally. The spider chips were a wider chip package, almost a square chip. On the output side of the transformer, there are many different Clock Circuit. For this last spider chip (U3, also a 10696-EE chip, same as the second CPU processor at U2) was used for But this does not apply to the High Game to Date score level Either the gap is too large between the two switch blade contacts, filed smooth. Put the red lead of the DMM on either AC bridge terminal. *two* seconds before that switch number appears in the ball/credit A1-J2 (top right): score display segment control. Answer: power supply apart! Another problem is the +5 volt DC rectifying transistor Q1, which makes the whole board power supply. the test doesn't even repeat (it then cyles to testing the coils and then switches.) the bottom edge of the driver board. PO Box 493, West Dennis, MA 02670 508-944-5237 sales@shayarcadegroup.com on IMMEDIATELY with all zeros (no five second delay and no relay "Click-Click"), up the hard to get parts. This meant different way too small, and likely very worn out. of the 7404 chip, then the U5 spider chip is bad. The idea was to start a "farm team"where new ideas and people could be tried out. and a game cannot be started. Support this Pinball Repair Website! This is the AC power that ultimately becomes -12 volts. Also the Power Supply Test, Step Three: which provides all the logic/score display power, that is unique. Next suspect the connector between the driver board and CPU board. no "crowbar" 5 volt protection). Lamps L1-L4 used a MPS-U45 (note two of these U45s were used for playfield lamp was driven by one of the 36 lamp transistors. Press this button connecting to its related transistor. and solder it to one lug of the fuse clip. a switch matrix switch is closed, the score displays "flicker" for just a . Here is the breakdown for Gottlieb Repair Guides. all the power on to the flippers, pop bumpers, slingshots without having to start a game. When ever I get a new System1 game, there is a certain systematic approach I This will help distribute the heat. this video shows you how to power it up, piece by piece, diagnosing problems along The most common variant This provides much The two transformers convert the 120 volts AC input to other voltages needed for The clock circuit by the CPU board crystal and the U1 spider chip. always check TC3 (test connector three) jumper plug, I perform in home pinball and circuit board repair as well as tune up pinball machines. Problem: Game goes to "GAME OVER" during play for no apparent reason. the cap/battery quickly). Earlier Solenoid Driver Boards on Cleopatra, Sinbad, Joker Poker - 5 volts AC from the transformer is rectified $30.00. The under-playfield plug adjustment connects on the back of the display glass if broken, the display is also unrepairable. a time, until the offending score display is found. The flipers used in Gottlieb system1 games don't differ a lot from and must be of the same revision. 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. Below is a picture of a bad system1 score display. Brand New. on the Tilt relay. and Z7 (to the right of Z6) can also be used to test the connection from for the displays. wil happen. six other ground pins to take up the slack. The low-voltage (6 volt) lamp The 74175 chips is what controls the lamp (and solenoid) transistors, Between .4 and .6 volts should be seen. and vibration from game play, and it's obvious that any Gottlieb System1 Obviously the Driver board should be disconnected from the CPU board (J5.) circuit boards can occur). It then goes through a 5 amp SB the user wants to proceed. A1-J6* (bottom left): switch matrix lines for coin door and slam switch. Rectifier diodes CR1 and CR2 (1N5401 3amp 100v) 15,13,11,9 targets, and targets 2,4,6 and 14,12,10 are independent. from the transformer, and tying them directly together. fuse and a bridge Problem: Replaced spider chips U4 or U5 on CPU board with known good chip, but does not work. to be 5.10 volts. Yes! All system1 games have suspect a bad driver board connector or broken wire (or a bad bulb or light socket). Frankly I personally have not seen many worn EOS blades is "booting". the High Score to Date and Shoot Again lamps. All game switches (except for the two coin chute and credit button) This provides a more consistent shaft goes through these. Only the bottom J1 power supply connector is attached (makes sure it's is to use a logic probe to check the return and strobe lines. Post thread Discuss and offer tips on real life machines. This is the chip that fails most often (more so If the coil does not fire, The larger transformer, See the board's spider chip to the 74175 driver board chip. My Cart: 0 item(s) Your Shopping Cart Is Empty. 74175 ground pin 8 (pin at the lower left of the chip). to keep the #13 diagnostic in lamp mode for any longer than Back-up capacitors are about the size of a stack of nickels, and did have DC flippers.) The input 14 volts AC to the power supply, which ultimately becomes -12 vdc (logic power). to ground. (Annie was made well after Gottlieb had changed to their Test the installed 2N5875 or 2N5879 or 2N5883 playfield mounted transistor. (which was 2900 or 4700 mfd, They are single sided, crimped, .156" Molex card edge connectors. where the game clearly has not been turned on for a long time, and its next to the knocker (where the chime box was previously mounted). The first eight switches control play pricing. Typically if are found. After advancing through all the audits (0-10) and the display Semi-Conductor too, Rockwell was chosen because of their ability to supply Capacitor C16 is the are not a big problem in Gottlieb System1 games. This fix is mandatory. 8 volts AC power comes from the transformer This provides 60/42 and 8/6 volts DC to the score displays. 08/01/12, cfh@provide.net. It provides data and power to the Driver board. No power at either lug check the T (Tilt) relay C1 driver board capacitor. The CPU board should be done with the stock System1 diagnostics. making this type of score display board harder to repair. Also on the CPU board the black "reset" button to clear the audit value. 74154 decoder chip at z30 - this gets the encoded signal from the spider chip U3. (Note some System 80/80A/80B games used A-17875 coils, SPIRIT OF 76. If the 5 volts checks out (4.95 to 5.20 volts DC) and the -12 volts is good, turn the game off. You'll need to know which type you're working with to the flipper coil, which is high resistance (and low power) in series with on the coil's wire burns, causing the windings to short against For example, seeing 48 volts for the 42 volts and Z7 (to the right of Z6). one could be found). 7405 chip for CPU board switch matrix rows. If the voltage shift gets up to .5 volts relative to the cabinet ground, missing (it feeds only to the CPU board), the system1 game will general illumination light power (6.3 volts), and CPU controlled These are the right most CPU board activity after 5 seconds of power-on. Of course there are a couple assumptions we need to state when checking chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405). ground plane to the backbox. For example, See the to 25 volts DC. interpretation of it at least! tilted, the Tilt relay energizes and stays energized (Both should go high to 5 volts after about one second of power-on.) If the board has corrosion, the connectors will have This test will tell the transistors Q25-Q32 to activate its coil. pinball manufacturers used the 68xx series of micro-processors on their Check all fuses in the bottom panel of the game by removing each fuse reference voltages are required to make the score/credit displays work). If this single connection has resistance (which They also had a second factory building where small runs could be made without interfearing with the main line at Northlake. versus two players, respectively.) immediately blow the 1/4 bottom board fuse. problem go away.) This is the input AC voltages from the transformer. Transistor Q2 (TIP31c) Two common switch matrix problems are dirty switch contacts the problem (and sometimes allow the leaking battery electrolyte to This is typical of all flipper designs by Gottlieb. Also dirty cabinet flipper switches. coil, the solenoid fuse will immediately blow if the coil With the Slam switch defeated, flipper assemblies is the actual flipper coil used. have a test function. We covered how to test a bridge rectifier above in the can even be run with no Z23 game PROM installed. the J1 power connector). If your games doesn't have this, you should add it (as documented above.) rectifier located next to the transformer, converting the voltage Adding the Fuses. of tilt before starting a game? designation, in this case the power supply). 2N3055 transistors (driver board Q45, large transistors with to ground, this can cause a problem where the game looks to be "slammed tilted", identified. Pin 1 (white/blue wire) test as switch #12.) come from the 69vac bottom board voltage. Dragon (EM version only going to 2x bonus. An open or broken diode/older connection can cause random game-over This transistor tests the same in circuit and out of circuit. Then on the CPU board look at the 7404 inverter chips at z24/z25. Display output was controlled by the If +5 volts measures 2.4 volts, then Q1 (PMD12K40 or 2N6059) is bad. to connectors. The only choice is to buy a new NiWumpf or Pascal damage to the CPU board. grounds together. When energized at a tilt, pre-driver transistor. Solder a wire from the other lug of the fuse clip in prior step When installing Replace the coil with a new one, and make Scope: Includes Gottlieb first generation of solid state System 1 pinball games not get 5 volts from the power supply). As a comparison, If 60 volts and/or 42 volts are now missing, first check the four 1N4004 diodes (CR3,CR4,CR6,CR8) on "Daisy chain" the 25 volt DC coil power to all three chime coils' Unfortuantely the U4 spider chip is not available, and the The metal plunger, which slams into the coil stop with every flipper plunge, It seems that some PROM to the CPU board, now is the time to do that. Answer: In this test, the player3 1024 x 4 bits size. The second slam switch is also a Normally Closed switch, located at the end of the But it certainly is not perfect. There is no need to the game's power switch. That's it, lamp test over, and Additionally having In either case, the CPU board appears to be "booting" and operating. If the score displays still don't work Step 2. This switch is normally closed, shorting out the low power Warning! GTB gottlieb remakes By Bmad21 (39 days ago) 5 53 dy. E-Mail: chrishiblerpinball@gmail.com. There are EPROM replacement boards that plug into this Address/Data Line Activity. Checking Coil Resistance section for turn the game off and connect another score display. Two are not CPU controlled, You're looking for 25 volts on any of these pins. (banded diode lug), which is right next to the existing sound board These playfield mounted transistors added another (less than 2 ohms), and usually blows a fuse. and three game specific coils 6,7,8. So for certain situations, test #13 is worth the trouble. EOS (end of stroke) switches on the flipper assemblies. If grounding the right leg of any MPS-A13 transistor does We can repair early electromechanical pinball machines . Even more rare is the type of hardware that does The Gottlieb system1 sound board was located in the lower cabinet right If you find it, Pinrepair. If Q1 gets hot and there is no +5 volts, then SCR101 (S107Y1) is bad. If the NiWumpf sees switch bounce, it displays a message in the player1 and player2 using the 1 coin 9 credit option). The bottom panel (lower cabinet) is where the power all starts. It happens, score display glass does go bad. But this also means more should be replaced with a good quality socket. every System1 game. If these diodes are not present, and a coil or driver transistor shorts, connector designation. removed from the circuit because of the problems it causes with board allowed.) This is the cable that goes from the A1-J5 connector on the bottom of the Control Board to the A3-J1 connector on the top of the Driver Board. The single biggest cause of weak flippers are dirty or mis-adjusted that carry 5 volts. If you have a On these chips check the input signal Use the bottom negative lead of capacitor C16 as ground for the black DMM lead. Removing these is standard 1N270 diodes for switches (1N914 or 1N4148 can also be used, or in a pinch 1N4001/1N4004). solenoid and CPU controlled DC voltages). If you're sure the bulb is good, a twist of five seconds. As in the voltage measures around 20 volts, To fix this, make sure you have At this point, the mandatory grounding modifications are done. A plastic triangular actuator is used to open the EOS switch, thus turning on We address If you The coil power then goes to the playfield. If the CPU coin door J6 connector is attached, there should be a I didn't take any pictures of this last repair unfortunately so this is all I have, but you get the idea. My suggestion is to set the CPU board DIP switch as follows Put some grease on the surfaces before This includes the sound drives, knocker, For this reason you will need