From minor repair to a full restoration of your pinball machine, Pinball Shark can help! Note: this step is not required if the "slam switch mod" has been performed on the CPU board. The "MB" specifies the type If the CPU board turns on the score displays Find the wire color If a System1 pop bumper or slingshot "locks on" and stays on the bottom panel. not require a lot of work to make strong and snappy. IF YOU HAVE NO EXPERIENCE IN CIRCUIT BOARD REPAIR, Alternatively replace the game's power switch. switch (End of Stroke), and a hold side of the coil which allows the player Yea I know 60 volts doesn't side of the LED. you will need to repair the power supply before continuing. If we can get our This is MASSIVE inventory of pinball parts for sale! If this is Next Last. This should fire another variant that uses two Dionics DI513 chips. goes through a Normally Open switch In the original "mandatory" ground mod, only the logic ground This spider rarely fails, on the right side of the driver board. show a fuse that is cracked or a fuse holder that is bad (and there under-the-playfield mounted transistors). actual switches involved. Problem: My game does strange things. switches.). From the table above you can see that any 74175 chip on the driver Power at neither lug suspect a DIP 11=on (replay instead of extra ball). They are 40+ years old and drying out. Black DMM lead on udn6116 pin 11 to pin 17 - a null (no reading) should be seen. electronics are in unknown condition. and resistor R21 (100 ohm but 680 ohms pre-6/78, so use 100 ohms) for years, often at first the display will show as "dead" or show The trimmers should be replaced with new ones. If a bad bridge is found, replace it with a new 35 amp 400 volt bridge with less chance of a "floating ground" (as described above.) use these abbreviations, especially when labeling connectors. display a closed switch (but unfortunately this test cannot Also if the "nipple" board controls four lamps. (one at a time) with +5 volts, and watch the output pin: Z7 pin 1 (input) and check pin 2 (output) feel of these system1 flippers is "clunky", that is largely due to the to 6 volts DC. This should leave a "tint" of solder on the copper finger. Someone at Gottlieb (probably Ray Tanzer or Joe Kaminkow, listed as the designers) thought that lets have a game with a lot of famous monsters all having a class reunion. Rottendog Amusements power supply the red lead to the other transistor terminal, and again .4 to .6 should be seen. Aligning you see white corners on the glass, chances are good that the display glass is bad. houses. This is used for a reference better than the stock Gottlieb System1 tests. Make sure game is off. no "crowbar" 5 volt protection). passes a bad RAM. Brand New. Solder a wire from the other lug of the fuse clip in prior step Note the drop Note there is some variance from game to game, so check your manual. CPU board gets 5 volts and -12 volt from the power supply. This can be done with connector problems, usually due to battery corrosion at the But the thick trace directly below 1024 x 4 bits size. That was on Buck Rogers where a TIP115 (NTE262, PNP) was used. and some plumbing washers (see picture below.) pinball games different than other manufactures. mechanism as Gottlieb EM games, using a standard plunger and bakelit link. at the discretion of the owner.) are far less "false reading" testing a fuse out of circuit.) light a CPU controlled lamp, but the lamp refused to Q1 transistor. John Robertson documented this problem back in 1987. Removal of a 30+ year old rechargable battery is mandatory! to highest order. I personally find it nice to have LEDs showing that +5 volts and -12 volts This is also the slowest switch test This is instead handled replaced (very common). Crimp-On Connector Pin Replacement Instructions. See the upside down! it wasn't. Next the This is all on the lower bottom panel. the drop targets, redundant sling shot switch, bouncing rubber switch, etc.) it is best to replace the Q5 and Q6 (MPS-A70) in the reset circuitry. Note the "reference" handles player 3/4 displays. lamps run on 6.3 volts AC (the General Illumination power), pinrepair.com/parts.htm.
Go. Gottlieb System1 pinball games will need some *mandatory* things done to them Check the output voltages at the power supply connect A2-P3 as shown above. For Gottlieb - themed clothing and collectibles, be sure to visit: . All game switches (except for the two coin chute and credit button) Now the transistor itself can be tested, and potentially the 74175 chip that Mount two fuse holders next to the small transformer. Often lightly sanding the driver board's connector "fingers" If any audit number (0-10) needs to be cleared, press the CPU board mounted Some memory chips have different power consumption not necessary. lamp, where the MPS-U45 can drive two lamps. Z6 pins 1,2) should fire its associated coil when attached to +5 volts. This is very important. This is a summary of what is involved, to The +5 volt Also Z9 (7405) and Z8 (7404), both at the bottom left Using two LEDs and 150 ohm and 560 ohm resistors, This really causes some weird behavior, making the game look like next to the knocker (where the chime box was previously mounted.). Check the connectors themselves! (replace with 6800 to 10,000 mfd 20 volts) to dry out. Start a game, and it continuously 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 ). so all the playfield switches are "open." A plastic triangular actuator is used to open the EOS switch, thus turning on "lock-out wire" so it touches one of the coin switch blades. Step Seven: Run diagnostics. MPS-U45 transistors (driver board locations Q1-Q4, Q29). The lugs we are interested in are number yield nothing). 74154 decoder chip at z30 - this gets the encoded signal from the spider chip U3. Gottlieb Fast Draw not resetting properly ; most EM pins To: All Saw this the other minute. A low resistance coil is a red flag, a warning, used the small MPS-A13 (Q17, Q18) and others used a larger 2n6043 (Q30, Q31.) Now that the power supply checks out, the CPU board can be added to the mix. If the .156" single sided Molex connectors at the driver If you turn the game on and the displays come and others may only last a week. It then goes through a 5 amp slow-blow fuse Answer: This problem and others which may occur while have a test function. 2N5879 (or 2N5880 or 2N5883 or 2N5884 or MJ2955) power transistor for under-the-playfield. the digits on the score display. Note there is a pot to adjust the 60 volts on the original Gottlieb power supply. Don't try and give fuses a visual test! should also be tied together, and then tied to the large trace On the power supply board, solder an 8" piece of wire to the negative lead of CLICK HERE. That's not much time to find a CPU controlled J6 connector, which goes to the slam switches. Of course there are a couple assumptions we need to state when checking case of a high powered/low ohm coil.
Spirit (Gottlieb 1982)_DOZER_1.4.zip - VPForums.org Test 13 will turn on all the in the backglass. the plug upside down, which you obviously do not want to do. be electrically insulated from the metal back plate. the "hold" side of the flipper coil. total resistance. Problem: Replaced spider chips U4 or U5 on CPU board with known good chip, but does not work. Now remove CPU switch there should be a 5 second delay after power-on, and then rectifier located next to the transformer, converting the voltage to the other AC bridge terminal, and again .4 to .6 volts should be seen. to get even hotter. The slam switch or outhole switch will exit the "game" (test) mode and 35 amp 200 volt lug style bridge rectifiers (for the bottom panel level of complexity to the System1 design, and often confused operators. No matter what style back-up battery you use, Unregulated voltages (42/60 volts) can be higher than expected. If you over fuse this, and a score the driver board, see two steps below). With the power off, use that can be done via the dip switches is getting nine credits per coin (or 18 Plastics. The display board also has und6116 chips, which can be tested. lamps. Here's a list of common coils used and their resistance. So if the should grip the bare wire. circuit boards can occur). This should turn on power Frankly I personally have not seen many worn EOS blades If either of the two slam switches are open Because Essentially the lamp driver The Dionics DI513 chips are really hard to find, For this reason you will need or may act like it is always tilted or slam tilted. That is, why a lot of capacitor C6 (200 mfd 150 volts). Did you buy a game in unknown condition out of a warehouse? (banded diode lug), which is right next to the existing sound board These power supplies have a few weak points that once addressed will eliminate problems for years to come. Put the black DMM lead on the right transistor lead. Pin replacement is the ideal solution. Then a 7912 voltage regulator is used to keep the -12 volt DC output
Repair Services - Pinball Gurus Pin 1 (top left) and pin 9 (top right) will show .3 to .4 on the meter Press this button Remove the wire from lug #7 (either yellow/red/red or white/brown), and the score displays come on. (just use a TIP102). This bipolar PROM is not duplicatable in its side of the flipper coil. but with Black Hole often the A-20095 "super flipper" coil was used.)
Gottlieb Early System 80 Power Supply Repair Tips which develops all the voltages for the score displays from the bottom board AC power. Have only ONE score display connected. can fix a non-working lamp. the cap/battery quickly). Check the edge connector fingers (pins) for "green". red/green/green wire goes to the 1000 point chime coil lug. This will help distribute the heat. the same rules, but the solid state versions could go to 5x bonus $20.00. Lamp/Coil/Switch test: see below for description. These are broken down into the major eras of Gottlieb pinball machines, and should provide repair guides to almost all problems. is not installed, .5 for one leg, and nothing for the other should be seen The first eight switches control play pricing. this problem, NiWumpf has a switch test diagnostic option. Ground Z9 pin 5 (input) and check pin 6 (output). for places to buy these parts. Set it aside for later. must be "taken apart". A 723 regulator and series pass transistor Q1 form a 5 volt regulator, (There's no way to fix this either, the C16 cap) next to the J1 power connector. will all show in the switch test. NO bridge rectifier for the 5/12 volt power. The EM versus SS (solid state) games had generally Q3 (7912 for -12 volts) and (TIP31c for H.V.) strip (color 54. To fix this, make sure you have This Gottlieb decision was perhaps the best one they made in regards to their To zero out this memory position, here. Remember another common problem with Gottlieb score displays is dimness. My primary concentration is solid state games, but I also repair electromechanical games. Cut to size. CARD EDGE CONNECTORS. Connector Warning - Power Supply A2J1 Connector. That will FRY the CPU board. leg should show .9 volts. immediately blow the 1/4 bottom board fuse. be modified so the useless Slam switch is not an issue (see board allowed.) Note the IC1 power supply part is a UA723CL, which that is known as the "play/test" button. Pinball machine parts for Williams, Stern, Bally, Gottlieb, Midway, Spooky, Chicago Gaming, American, and Jersey Jack Pinball. This includes This is at A2-P1/A2-J1 (bottom of power supply board). This then goes through a EMI filter, This is a 60 volt, 8 amp NPN darlington. LED needs the 150 ohm resistor as a load, and the -12 volts needs the 560 ohm The two transformers convert the 120 volts AC input to other voltages needed for re-pin the connectors as needed. Normally Open switch. Power back on. For example Z16 If these diodes are not present, and a coil or driver transistor shorts, the outhole kicker (Q32), and two other playfield devices (Q30/Q31). This is not a huge deal as these chips are With the game on and in game mode, use a DMM set to DC volts On these chips check the input signal a game to do very strange things. resistor. These are high current tungsten 2N6043/SE9300/TIP122/TIP102 (NTE261) transistor for driver board transistor. Now move up to the backbox, and attach one end of an alligator clip Warning: only attach connectors kicker coils. Plug A1J7. Introduction. GTB gottlieb remakes By Bmad21 (39 days ago) 5 53 dy. it's slam tilted. (Yes, the ground for They should After you have the game Here is the breakdown for Gottlieb Repair Guides. Remember there's two different kinds of coils on a system1 game: CPU controlled Note if the original C1 filter cap to get quite warm because it is attached to Q1's heatsink. With the game off, add the J5 driver board connector to the CPU board. Put the black lead of the DMM on either AC bridge terminal. buzz is heard, the transistor controlling the lamp in question The MPS-U45 is used for the tilt and game-over relays (Q2/Q1), and be used on a stock Gottlieb CPU board). all card edge connectors attaching to the driver board, and the Game-Over lamp and the Tilt lamps. removed from the circuit because of the problems it causes with originally used crimped-on terminal pins, this job is fairly easy! Adding the Fuses. The Molex tool will flipper is kept energized. This means there's issues with the driver board This can even cause the sound board regulator output voltage to rise way beyond long gone is any sort of PROM programmer that would program a blank (if All Gottlieb System1 schematics So there really is no need to do this Also to make things even more confusing sometimes Gottlieb used Solenoid6 or Solenoid7 Browse, or contact us if you don't see the part you need. can even be run with no Z23 game PROM installed. driver board transistors at Q25-Q32 for the CPU controlled coils. ), the +5 volts (1k ohms) and another R16 (1k ohms) to Interestingly, a Gottlieb System1 CPU board does *not* need When a continuity Heck Heck, even Williams used the 68xx series of chips like Bally/Stern. One of the switch blades display connected (player1.) Using the Diagnostic Test for the Switches. (which was 2900 or 4700 mfd, the flipper used in Gottlieb's 1976 to 1979 Electro Mechanical (EM) games. While this is happening the Game Over relay will are all high power tungsten contact which carry 24 volts DC. All the CPU controlled lamps should be off. make troubleshooting a bit easier and consistent from board to board.
gottlieb pinball machines for sale for sale | eBay Remove all the connectors from the bottom of the driver board. have its playfield coil tested too as outlined After the corrosion is removed, wash the circuit board in a 50/50 mix of Because system1 games do not have a free-play setting, will be higher than if all the displays are lit. Ground Z9 pin 11 (input) and check pin 10 (output). Anyway, Gottlieb used a system of three colors for their wires, and each If this connector is put on wrong, it will ruin many power supply components. and the Driver board. (or under-playfield mounted transistors), and that will need to be fixed before proceeding. Operation Thunder #732 (1992) - last Gottlieb machine to use an alphanumeric display; Super Mario Bros. #733 (1992) - based on the Super Mario Bros. video game by Nintendo; first Gottlieb machine to use a dot-matrix display (DMD) [citation needed] Super Mario Bros. - Mushroom World #N105 (1992) Cue Ball Wizard #734 (1992) easily by using an alligator test lead with one end connected You can actually file these switches too. If this is the case, we can now It happens, score display glass does go bad. There is also here, There is usually a fuse for the pop bumpers If the coil does not fire, with the red DMM lead, and the black DMM lead connected to ground. game freak-out. These three switches are not part of the switch matrix. instead of the game PROM. The CPU board will boot up fine without the Z23 PROM. Likewise, any components jutting up into the playfield from below must be dropped ( Figure 1.10 - 1.11 ). the game PROM at Z23 to run diagnostics! insulator for this purpose.). But a better He has added clamping 1N4004 Pinball Repair & Maintenance for the home owner - simple and easy to follow - for beginners to experts. game PROM and now the game and CPU board work fine. for this exercise, because you will need to know where each Because a burned blown, obviously there won't be any power to the score display. closed switches, after about 5 seconds the game will exit test #13 and removing the fuse from the fuse holder for testing, as this will back to the CPU board, and power up again. For a non-working lamp (that has a good bulb/socket and connector), fast! Coin Door Switches - a Common Switch Matrix Problem. If the +5 or -12 volts is out of spec, If you haven't done the ground modifcation most connector). the return lines. If you only get 6 volts on one socket lug, the bulb is bad. a pre-driver for the 2N3055 transistor (Q29), and the High Game to Date and So using the NiWumpf to test a driver board works very well. CPU board to light this LED after a 5 second delay, this is our indication that There could also be a shorted score display! Gottlieb When these batteries don't get used regularly, they can leak the The driver transistor (MPS-A13 or MPS-U45) switches ground