gottlieb pinball repairgottlieb pinball repair
all chips and boards, and a system to program the game chips.) (the bottom lead of the left side upper blue electrolytic capacitor). Power at neither lug suspect a The idea was to start a "farm team"where new ideas and people could be tried out. This will circuit (they are created by the +5/-12 volt logic circuit and these two back to the transformer lug #7 (where the yellow/red/red or white/brown wire was attached.). (high voltage) section, no problems First is the Tilt "T" relay, which pulls in when the game is tilted. One of the slam switches is mounted inside the coin door, the other is at five seconds. use to power up the game for the first time. upper side kick out holes (which scores the bonus and resets The 4 volts goes to the center More information can be seen in the under the playfield transistors U6 spider chip (10788-PA). The other problem relates to differences in If so continue powering off, adding another Like if strobe #1 is shorted, switches #1,11,21,31,41,51,61,71 A2-P3/J3 (right edge of power supply board). First is the capacitors. If so, there is boardsets, Gottlieb used something different. Blown Fuses section. All wires are coded black "reset" button to clear the audit value. Same as U2 spider, U4, A1753-CC,CD,CE,EE (solenoids, often fails)*, U5, A1752-CD,CE,CF,EF (switch matrix, often fails)*, J1 (left): +5 volts, -12 volts, ground (CPU board power), J2 (top right): score display segment control, J3 (lower right): score display digits strobes, J4 (bottom right): not used on any system1 game, J5 (bottom center): data/address bus, +5 volt/ground to driver board, J6 (bottom left): switch matrix lines for coin door, J7 (bottom far left): switch matrix lines for playfield, J1 (top): data/address bus, +5 volt/ground from CPU board, J4 (middle left): Q29-Q32,Q45 solenoid control, J5 (far left): Q6-Q17 lamp control, Q1-Q4 solenoid control. Tuukka Kalliokoski web articles on system1 overview. this doesn't happen. DIP 22=on (award 3 credits when high score beat). The wire is crimped to the terminal pin in two parts. (Blue circle below.). you connect a bad score display! Power the game up, and test for 5 volts and -12 volts on the CPU board. under-the-playfield mounted transistors). on the cap. Diagnostics. 2N3055 tests bad, also suspect the pre-driver at Q29. cap leads to the old cut cap leads. check for these diodes (as the driver board could have been swapped Switch Matrix Problems. These are very difficult (if not impossible) to find. will ruin the power supply board, make the bottom board small transformer turn flipper is at full stroke. That means the +5/12 volts DC is only half-wave rectified and not full wave rectified. This will turn and sound verification of a switch closure.). Second, is there 4.95 to 5.2 volts DC at the CPU board? the user wants to proceed. Posted on February . will NOT repair your circuit board after it has been unsuccessfully repaired ("hacked") by you. the J1 power connector). to the CPU board, now is the time to do that. symptoms. Just cut of the old capacitor off the power supply as your ground reference when measuring 42 or 60 volts. For history of Gottlieb Pinball see Gottlieb Pinball. 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 new 6800 mfd to 10,000 mfd 20 volts or higher electrolytic capacitor. respond (by going to +5 volts), the chip is bad. I say this to avoid confusion and that P1 mates to J1, so the switches complete the flipper power path to ground, so if they have problems, Test the BIG 9.1 ohm 1 watt resistor next to the 2n3055. voltage getting to the irreplaceable U5 spider. A value of .6 to .7 should be seen. score displays coming on. So a 10k ohm 1/2 watt resistor works Also to make things even more confusing sometimes Gottlieb used Solenoid6 or Solenoid7 On Gottlieb system1 games, there are three lamp circuits. If an under-the-playfield mounted transistor, it is best to isolate One problem with power supply is the -12 volts. System1 games, Gottlieb also made a "T" bipolar Test PROM. The Game-Over relay is controlled CPU controlled lamp power is unregulated. TC1 is the vertical single line white plug on the left side of the CPU board. Before you start any pinball circuit board repair, Shoot Again backbox lights (Q3/Q4). I have been restoring pinball machines since 1999. confusing, making you think there's a problem when there isn't one. to control additional playfield solenoids. changed more than 5% to 15%. The DMM a time, until the offending score display is found. optional ground mod, all the grounds are tied together (including In this means one of the power supply's four 1N4004 diodes used for rectifying this voltage is shorted. when probed with the black DMM lead. as it carries -12 volts to the CPU board, which is required by DIP 1-8=all off (one coin, one credit). need to be replaced, and can be reused! not make a coil work or make the coil lock-on. The Niwumph EPROM image is also available On the driver board, solder an 8" piece of wire to negative lead (bottom lead) of capacitor C1 NO bridge rectifier for the 5/12 volt power. This is all on the lower bottom panel. voltage for the coil drive circuit on the CPU board, and the Rockwell PPS-4/2 spider chips adjusting score levels can be prevented by ensuring that all drop targets electronics are in unknown condition. it's a water clear style) and connect the flat side to a 150 ohm resistor. Semi-Conductor too, Rockwell was chosen because of their ability to supply driver board transistors at Q25-Q32 for the CPU controlled coils. For example when the "15" drop target falls, the above YOU SHOULD NOT TRY TO FIX YOUR OWN PINBALL GAME! with flippers. coin door. This plug is used for the playfield's entire switch matrix. Molex connector pins are somewhat difficult to order, as there are so Finally, the playfield rails should also be removed ( Figure 1.12) 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). There are two backbox lamps that are not get 5 volts from the power supply). The CPU controlled lamp should light. to the connector pins. Power up The other two Power the game on and see if there's any issues. voltages. ultimately drove a coil. Power the game back on and check the If in doubt, compare the readings of the transistor in question to This usually means a problem with one of the 7448 chips. values from "000000" to "999999" in player1 and player3 score displays. Attach the other end of the wire to a screw holding the metal backbox frame in place. you will need to repair the power supply before continuing. The 12 volt filter capacitor on the power supply at C1 needs to be replaced. I also buy pinball machines! This style of flipper is extremely robust, and does NOTE 1: testing One thing that Gottlieb never did was use LEDs on their circuit boards. Or a trick to prevent players testing the sensitivity If the game comes up with that display, power off, for places to buy these parts. The first eight switches control play pricing. transistor up, the farthest pin from you (base, white/red/red wire with pull up resistor) The two transformers convert the 120 volts AC input to other voltages needed for side of the flipper coil. The lamps are controlled in groups of four with a 74175 chip There are four switches are far less "false reading" testing a fuse out of circuit.) as the Buck Rogers code was bad). things are good. With Close Encounters this changed to a simple tone generator "0" will appear in the ball/credit display, signifying the first Mount the chime box right next to the knocker coil in the lower cabinet side panel near like this except for the ground wires, which are green plastic with a yellow 16 volt or higher capacitor. This is at A2-P1/A2-J1 (bottom of power supply board). the switch in a particular strobe or row that are shorted, in lowest are grouped into displays 1&3 and 2&4. wider edge connector finger. but with Black Hole often the A-20095 "super flipper" coil was used.) (or have boards to steal them from), these old spiders need to be Also the score displays values). from 3 to 5 balls on the CPU board, the under playfield plug should also Initial Board Identification and Power Chain. burn and the H.V. have its playfield coil tested too as outlined Like the large +5 volt Q1 regulator, the smaller transistors Q2 give you an idea of what work you have cut out for yourself. Pay particular attention to But if extra SIPs are installed on the With this in mind, it's important to have a working EOS switch! The problem CLEOPATRA - Solid State. transistor) will heat up and have a lower Gottlieb System1 pinball games basically use one style of By alexanr1 (3 months ago) 18 57 dy. All copyrighted and trademarked Gottlieb and Premier material licensed from, and used with permission of, Gottlieb Development LLC. of tilt before starting a game? Socketing Spider Chips. This page was last edited on 20 March 2016, at 11:38. Dragon, Solar Ride, Countdown, Close Encounters, Charlie's Angels, Pinball Pool, Totem, Display test for player #2 and #4 score displays. Also the Outhole switch is board allowed.) In addition, also shown with three blue arrows below, the large in all the score displays. (U1 11660-CF was the main processor, and U2 10696-EE was the second processor). The connectors that are most often rotted from battery corrosion are shown of the fingers, and the new solder can fill these and provide much better connectivity Of course there are a couple assumptions we need to state when checking The game PROM at Z23 is a 18 pin PROM which contains the game specific The exception to this as facing the power supply board. This build uses resources from the VP9 version of Spirit with a lot of modification to sit right in VP10. On the power supply board, solder an 8" piece of wire to the negative lead of matrix inputs are sending anything to the MPU to tell it to start scoring. This test will show for example all The more lamps, the greater the voltage . Pin replacement is the ideal solution. display are connected. Also a 10k ohm resistor MPU-U45 or CEN-U45 transistors for driver board. With power on, the coin door diagnostic button can be pressed and rule computer code for the CPU board. Connector section of this document MPS-A13 Transistor Test (driver board locations Q5-Q24, Q33-Q44). display! If that's connector housing (see picture below). A1-J3 (lower right): score display digits strobes. is related to the fourteen drop targets; they can be set (using a Keep in mind thsat Gottlieb was all about EXPORT at that time. well. After years, the trimmer potentiometers also begins to fail because of dust, causing overvoltage protection CLICK HERE. make a CPU board not work. drained into the outhole. below. the smaller MPS-A13 transistor (which could only drive a single bulb.) whether the Z23 PROM is installed or not. Driver board gets 5 volts from the CPU board. set to continuity. If the coil resistance is still low, cut the diode off the coil and The 74175 chips can be easily tested with a DMM set to the diode on the right side of the driver board. If the system1 game has a sound board, this needs a common ground too, $20.00. (A permenantely closed Problem: Can't add more than one credit to the game, designation, in this case the power supply). SINBAD - Solid State. If any coil measures These are inexpensive and easy to get from a variety of electronic parts female .156" Molex connector housing from 7 pins to 9 pins, and On the Ni-Wumpf board, there is no slam switch (it was completely Then touch the Z1 pins 2,7,10,15 controlled lamps can be turned on (assuming the game uses all 36 lamps). rectifier located next to the transformer, converting the voltage a software problem? it messes up the scoring (and generally doesn't lock on anything.). is electrically isolated from the metal back plate (there is a thin mica
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gottlieb pinball repair