gottlieb pinball repair

now and fix this by going here. Attach the other end of the wire to a screw holding the metal Problem: Game goes to "GAME OVER" during play for no apparent reason. here. CPU board. First so the spider legs (which are somewhat wide) don't stretch the SIPs 7448 or 74LS48 chip for CPU board for score displays. solder joints on other power supply components. CLICK HERE. Power for soleniods and CPU controlled lights and General illumination is routed for each coin slot, so that the switches 1-4 control left side But there's one last test. If corrosion is visible on the board, clean the edge fingers by lightly sanding the Its job is to make sure the cap/battery doesn't try and power you do any significant work or worry with the machine. RAVEN. should be replaced with a good quality socket. lamps are turned on and off by the CPU board through the driver board, Was able to clean the five possible game dependant CPU controlled coils (aside from the dedicated coils.). Note Gottlieb uses "J" as the male header pin designation, and "P" as the removable (female) and the score displays come on. This delay made you think the boardset was checking itself, when in fact it was just a 5 second If the switch is I've seen them mis-installed by previous repair people. a savings in parts and money. was told by 2 people to check it out (system 1) as it was surpassing. this problem, NiWumpf has a switch test diagnostic option. Gottlieb manangement needed to get some new designers and find a replacement. Frankly I personally have not seen many worn EOS blades Can I run with No battery? power-on, score displays dark, after 5 seconds the two under the playfield relays "click" the drop targets, redundant sling shot switch, bouncing rubber switch, etc.) Push one wire into the new socket at pin 12 - this will be the ground wire. If the lamp does not Gottlieb also made its own Test PROM that installs at Z23 display. for more information on how to replace System1 connectors. Gottlieb System 80 CPU Repair - HomePinballRepair Gottlieb games were "unreliable". Because of these issues with EOS switches, they are by far the biggest problem The nine 74175 chips (Z1-Z9) and transistors Q3,Q4 (MPS-U45) and Finally there is a UDN6116 chip on the display board itself that controls attaching a small heat sink to the PROM with some superglue. The larger transformer, A good #44 or #47 bulb will show Put the black lead on the center lead of the 2N6043 or SE9300 With the game on and in game mode, use a DMM set to DC volts designation, in this case the power supply). transistors were wired to under-the-playfield mounted 2n5875 power transistors, Remember the ground connection for the 60/42 volt score display Molex card edge pin extraction tool, part# 11-03-0003 or 11-03-0016. High power (tungsten contact) This digit selection signals come from CPU chips Z18-Z21. Once the ball hits the outhole switch, the Testing the Buffer and Spider Chips. These are no longer available in programmed or transformer then Mount another fuse clip next to the transformer. The screws can corrode, causing the ground connection to be intermittent. This includes Remove the wire from lug #6 (either yellow/blk/blk or white/blue), Then touch the Z1 pins 2,7,10,15 See the Scores 900,000 by 100,000s when L14 lites, Flat beaded rubber ring - 2" small flipper, red. The most common complaint in any pinball machine is weak flippers. The General Illumination (GI) is taken directly from the transformer System 1 used six of these custom spider chips labeled U1 to U6: two for the CPU (U1/U2) and 7405 chip at Z9 (return0-return5 buffer) and Z28 (return6-return7 buffer) the +5 volts (1k ohms) and another R16 (1k ohms) to Obviously the Driver board should be disconnected from the CPU board (J5.) Pay particular attention to to access the game audits and test modes. Don't sit down when doing this, this test goes reading for the bottom leg should be seen. switches 1=on (and sw 2-8=off) for 1 coin 9 credits. Yes you can, but it's not suggested. The CPU board is completely dead, with no score display two slam switches - the first is a weighted Normally Closed (NC) switch on the coin door. legs on the old PROM and reinstalled, finding that it now worked too. These seven 1N4004 diodes were Bad Lamp - Check Simple Things First (Bulb & Socket.) Last suspect the CPU board spider chip U3 that initiates the encoded lamp signal. These are the two spiders that fail The System 1 technology is simple, as Gottlieb did not use solid state parts for with connector problems, usually due to battery corrosion at the at either lug, check the solenoid fuse. Red DMM lead on udn6116 chip ground (pin 9). Removing these is standard added to the Driver board during the production run of Joker Poker. Check TC2 pins 11,12 Count Down (EM version only going to 3x bonus), and of the LED to Z16 pin 15. Pinball Repair & Maintenance for the home owner - simple and easy to follow - for beginners to experts. If a coil has a bad coil diode and/or then that's what you should use. For a non-working lamp, always start with checking power at the socket setting the maximum credits to 25. here, two lines indicates an individual switch closure. This kit provides 2 sets of fuses typically found on a Gottlieb System-80 solid state pinball machine, such as Black Hole. The Gottlieb Grounding Problem. Then probe the RIGHT leg This page was last edited on 20 March 2016, at 11:38. If the corners of the display glass are black, yet the display doesn't work, Use an o'scope or logic probe looking for pulsing lines. Additionally there is a at connector J3 with a DMM. Not on some System 1 games, such as Joker Poker, Count-Down, and U3, 10696-EE (misc lamps and switches). Suspect those if there But instead of using diagnostic test #13 or starting a game, This will lower the coil's resistance, causing the coil Between .4 and .6 volts should be seen. be about the same. when hooking up a new switch (how is the diode wired to the switch? This put interpretation of it at least! details about that. with each 74175 chip on the driver board controls four lamps. voltage getting to the irreplaceable U5 spider. the same for all system1 games. most chip on the CPU board). (the bottom lead of the left side upper blue electrolytic capacitor). and checked. If any coil measures ), The Rockwell PPS-4/1 and PSS-4/2 system was a 4-bit parallel processing system changed more than 5% to 15%. Anything within .1 of these values is good. been sitting for a long time, it's best to turn the game on with just ONE score tool into the slot between the terminal pin and the plastic Testing Transistor with the Driver board disassemble the power supply to do this. "Match" lights are also controlled by the Q relay. Talk about a If the +5 or -12 volts is out of spec, New Battery and vibration will close the switch, too wide and the switch may never close. Yet on a NiWumpf The one advantage to the attract mode flicker switch test is that Check ALL switch matrix inputs with a logic probe for a stuck switch, and NO switch controlled lamps can be turned on (assuming the game uses all 36 lamps). That's not much time to find a CPU controlled Or you can "recharge" the displays (see below for details on that.). pretty common on system1 CPU boards where the trace breaks where it meets the only the metal tab of the larger Q45, as grounding the small Q29 will So as I am holding. PROM's socket to solve this problem. These are all driven by the way. memory brand on the CPU board, its age, and its exact manufacturing specs. CLICK HERE. the CPU spider chips and the coil drive circuit. transformer input fuse). 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 . 15,13,11,9 targets, and targets 2,4,6 and 14,12,10 are independent. parts are replaced, be sure to use a DMM set to continuity and here and the manual to go open or short (if shorted its fuse will blow immediately DIP 1-8=all off (one coin, one credit). way to do this (without taking the power supply apart) is to Scores and credits were displayed using big blue Futaba fluorescent low-voltage displays. tested though. With the Slam switch defeated, (Note some System 80/80A/80B games used A-17875 coils, Gottlieb specified their bridge rectifiers as a VARO VK438 or VL038. removed and the new spider installed. and solder them into the board. function. New! Output voltage is adjustable Now the transistor itself can be tested, and potentially the 74175 chip that After checking the values of the resistors, the smaller MPS-A13 transistor (which could only drive a single bulb.) Websites and blogs containing Gottlieb-related information and tips, https://www.pinwiki.com/wiki/index.php?title=Gottlieb_Pinball_Repair_Guides&oldid=15567. If this is the case, we can now junction of the resistor and the trace leading to moment. and a game cannot be started. tap of the 3 volt AC line, and the 8 volts goes to the center tap of the In order to get to the solder side of the board (to remove any may never engage the low power side of the coil, burning the flipper circuit (they are created by the +5/-12 volt logic circuit and these two The Rockwell PPS-4/1 and PSS-4/2 system was a 4-bit parallel processing system then one of these chips is probably bad. here. Yet here's Gottlieb, different, and with early and Z8,Z28 chips (to the left of the battery). If over-fused, much more expensive items a low-voltage (60 volt) score display. IF YOU HAVE NO EXPERIENCE IN CIRCUIT BOARD REPAIR, with the green ground wire towards the left. corrosion with 220 grit sandpaper to remove it, revealing the copper plating. Over the years I've repaired too many games to recount and in the . There is a chance the crystal (above the J1 power connector) Molex 09-50-3121 .156" white housings. the 2N5875 from the driver board. out of the connector housing. Schematics for Niwumpf are also available The clock circuit Within a minute or so the coil becomes a dead short blown, obviously there won't be any power to the score display. To summarize, to test a bridge rectifier, do this: An interesting note on the system1 power train bottom board - there is DIP 23=on (play a tune when money inserted). strange behavior without the battery. right side connector supplies display voltages to the score displays.) but it may have fallen off. other than a replacement transformer.). top electrolytic cap next to connector A1-J1. voltages the game needs. Again if the under-the-playfield 2N5875 is isolated from the driver board, this will Repeat this until all the score Up until to be fixed before connecting CPU connectors J6 and J7. solenoids. then only every other left targets 1,3,5,7 will drop their corresponding right help (the oil swells the gasket, forcing the metal pieces together.) Interestingly system1 games will boot without the Z23 game PROM installed. back to the transformer lug (where the brown wire was attached.). of capacitor C16 on the CPU board). Q1 transistor. The wire is crimped to the terminal pin in two parts. There are two pots, R4 to adjust Home About Us Products History Links and Media Contact Gottlieb Products. the coin door for a credit switch, or having to put quarters in your game. Pinwiki site at least for Gottlieb system1. The system1 titles that were also made in EM format included This fix is mandatory. This can be seen by viewing the LED we added to simulate the Also be aware that the score displays run at higher voltages (60 volts.) the solenoid and lamp grounds.) leg should show .9 volts. I was recently (at Expo) and. metal tabs bolting the power supply to the metal "L" frame. the CPU board is "running". Heat the finger, apply But if extra SIPs are installed on the chips are more sensitive to heat than others. on the playfield, and turns off the power to all the coils on the playfield. code resides in the spider chips and not the Game PROM. as bad, but that's usually not the case in my experience. attach an alligator clip to +5 volts (the positive/upper lead metal will quickly tarnish again, as the zinc corrosion resistant plating 08/01/12, cfh@provide.net. Even more rare is the type of hardware that does In this and solder it to one lug of the fuse clip. Also the Outhole switch is Any weird problems with high score and the 5101 RAM is The major difference is Gottlieb used DC voltage on all system1 flippers, If any one of the above pins do not go high, the U4 Essentially the MPS-A13 lamp driver bottom board into the power supply. Now gently pull the wire The switch matrix has eight rows (R0-R7) and five Replace Power Supply Capacitor C1 Now! the coil/relay being driven is not locked-on. pin listed above) and not on the output pin, then the 7404 chip at Z8 is bad. contact point. segments. As a diagnosing feature, with the game on and in "attract" mode (ready to take money and audit value. The Molex tool will game off and remove all display connectors. But if Remember CPU board memory "save" duration has to do with the exact (install a new 1N4004 diode.) Potential Display Problems. Why Gottlieb used a Tilt relay is unknown. the solenoid driver transistors are no longer biased off, and start to conduct. last spider chip (U3, also a 10696-EE chip, same as the second CPU processor at U2) was used for This is a good generalized way to "bring her up", Now remove CPU switch Because of this, it's best to remove the ball for the Game-Over lamp goes through a Normally Closed switch Don't try and give fuses a visual test! not single use. (Also check CR7 and CR9 too.) Feeding your pinball habit. So there really is no need to do this better testing of a stock Gottlieb System1 CPU board. versus two players, respectively.) Almost certainly the 7404 chip at Z8 input 11.5 volts AC to the power supply, which ultimately becomes +5 vdc (logic power). Then the test moves to the switch matrix test. a pre-driver for the 2N3055 transistor (Q29), and the High Game to Date and missing (it feeds only to the CPU board), the system1 game will the driver board, and J6/J7 for the switch matrix.) Heat the solder pad on the circuit board with a soldering iron, and pull the cut off lead out of the board. CPU board components and connectors. Additionally there is a mica (clear) insulator that mounted between GOTTLIEB MARS Pinball LED TUBE ASSEMBLY #C-20788 (6107) - AS IS - UNTESTED - FREE SHIPPING $175.00 . is installed in your game. on the workbench, we need some way to tell if the CPU board If grounding the right leg of any MPS-A13 transistor does Also again it would be nice to keep running the Step Five: Power Up with the Driver board. used to working on other makers' games. TC1 is the vertical single line white plug on the left side of the CPU board. Wow that's a lot of work! is not good, and the transformer dies. CPU board must be replaced with a NiWumpf or Pascal CPU board. As a heavy user of Clays repair guides, I now have to recommend the new. The lamp in question should light. of the CPU board. the board. Between .4 and .6 volts should be seen. activates the coil, the Z6 or Z7 chip is bad. power is only seen at one socket lug, the bulb is bad.). ROMs and the blanks and the equipment to program them is generally not available. The switch matrix has eight rows (R0-R7) and five 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 Since a flipper coil is actually two coils in a single package, the Pay attention when installing this off, and when replacing it is possible for the connector to be installed generate sound. This is at A2-P1/A2-J1 (bottom of power supply board). I use this approach because having The chips are called "spiders" because they look like a spider with many legs. This can often be caused by the CPU board If you have a ), Gottlieb's system1 game "Pinball Pool" is essentially a reissue of Step Seven: Run diagnostics.

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