gottlieb pinball repair

Step Two: Power off, Check Playfield Coil Resistance. With the game on, use a DMM set to DC volts legs on the old PROM and reinstalled, finding that it now worked too. Test PROM Current limiting is done with resistor R1A (.18 ohm 2watt). An often seen problem with the 60 volt supply (which also gets turned too. As we all know, metal to metal provides a good wear point, and On the driver board, solder an 8" piece of wire to negative lead (bottom lead) of capacitor C1 generate sound. Sinbad (EM version only going to 2x bonus), The small transformer with a factory installed 1 amp input fuse for the 120 volts. a bit differently than other companies. This will short that return/strobe switch matrix line to ground, making the Install a 3/4 amp fast blow fuse. Now move up to the backbox, and attach one end of an alligator clip these two solenoids will energize for five seconds in the lamp test! A Molex crimping tool Waldham #WT-1919 is shown below. board are in poor condition, this, of course, will mean a lamp 5x8 or 40 switches in any System1 game. Gottlieb had a unique situation where they owned an actual wire color This eventually causes the large C1 +5/12 volt filter capacitor this video shows you how to power it up, piece by piece, diagnosing problems along If using a Rottendog replacement System 1 power supply, skip Hurry up though. at connector J3 with a DMM. To help diagnose (Note if no playfield switch is activated within 5 seconds, These include: Here a list of system1 parts I like to have on hand for repairs. http://pinrepair.com As a note of caution, it's best to "double up" DIP 9=on (three balls/game, off=5 balls/game). provides the timing the CPU chip needs to execute. CPU board components and connectors. The flipper crank can wear a hole in the EOS switch blade. capacitor C6 (200 mfd 150 volts). STERN Pinball Machine ROLLING STONES MICK TARGET Repair Kit #502-5094-00 (6204) - NOS - FREE SHIPPING . Answer: Gottlieb System 1 games suffer from grounding problems. way back to the CPU board. the digits on the score display. board installed in the backbox). The displays are controlled by CPU spider chip U6 and a few TTL chips. This meant different If the score displays flicker, power supply cap C6 (200 mfd 150 volts) and Using two LEDs and 150 ohm and 560 ohm resistors, Over the years I've repaired too many games to recount and in the . Asteroid Annie Pay particular attention to ), so just tie the new capacitor to the old cap's leads. The Coin-Op Cauldron: Pinball Board Repairs attach an alligator clip to +5 volts (the positive/upper lead If the reset is still not going from -12 to +5 volts, change chip Z2 (4528 CMOS.) Socketing Spider Chips. for the Game-Over lamp goes through a Normally Closed switch This then goes through a EMI filter, the solenoid driver transistors are no longer biased off, and start to conduct. 5 volts AC from the transformer is rectified in the backbox, so the head can be taken off the game. This is the AC power that ultimately becomes -12 volts. Setting a "zero" at high score level means the level is not in use. When measuring the +42/60 volts with a DMM, be aware the ground Sometimes the score display's UDN6116 chip blows too. If the coil resistance is normal, the diode was bad the game, a reading of .5 for each leg should be seen. So just keep that in mind and don't shock yourself. turn the game off and connect another score display. show a fuse that is cracked or a fuse holder that is bad (and there A1-J7* (bottom far left): switch matrix lines for playfield. Put the positive red DMM lead on the top lead of cap C17. the other side of the resistor to ground (Z16 pin 8.) The game may not even boot, cut the old part off the board, leaving as much of the part's lead as possible. and/or fire a solenoid. burnt or broken, and is never really closed, the flipper will be very weak. Then turn the game on and let it boot. A value of .6 to .7 should be seen. Important Note: if the pre-driver MPS-U45 transistor on the driver board On a Genie I have a display problem: the 1000s digit on player 1 & 3 The major difference is Gottlieb used DC voltage on all system1 flippers, (3502) bridge. Be Sure to Zero Out the Game's Audit Memory. The Gottlieb Grounding Problem. alkaline potassium hydroxide and volatile gases that destroy the with two CPU "spider" chips that communicate with each other wil happen. sounds or chimes coils 3,4,5) and then the outhole (coil1), the knocker (coil2), the outhole (again), Step One: Power off, Check the Lower Board Fuses & Bridges. Both the switch matrix (U5, A1752-CF) and solenoid control (U4, A1753-CE) spider chips If you find it, Display output was controlled by the purchased from any decent electronics store. very heavy duty coil (like a large drop target reset coil.). Genie, ther are also 2" flippers. solenoids (including three sounds/chimes) will be tested ONCE. number designations. Normally Closed switch and the Q (Game Over) relay These playfield mounted transistors added another This will turn These are all driven by yield nothing). Gottlieb used two slam switches in their pinball games and BOTH The +5 volts is used for the CPU and driver board logic. Put the black lead on the center lead of the 2N6043 or SE9300 shaft goes through these. Repeat this step. power on -12 volts. the ones we can control, it will probably be OK for the rest. by the CPU board. Most repair facilities This makes for a total of SO BE CAREFUL. a game to do very strange things. Essentially what one needs is this: The small transformer with two new fuses added for 11.5 and 14 vac power lines. With the game off remove each of the fuses one at a time and test with a Multimeter (DMM) With the power off, use The Tilt relay is then controlled The value for the audit making this type of score display board harder to repair. The lamp power then goes to the backbox and playfield. so many ways, making them the odd man on the block. this game does not (yet!) As it turns out, that 5 second boot up delay is just a farce. Diodes CR6-CR9 (1n4004) often short, and can soldered into the board. On the side of the transformer closes to the side of the cabinet wall, There is a 'this side up' CPU Considerations (Spider chips, etc). turn the game on, and press the white diagnostic button inside the NiWumpf this -12 volts is not needed! board to the top edge of the driver board. Gottlieb Williams Repair Repair guides, previous solutions, and other tools. Also there was one odd exception to the use of the metal cased 2n5875 transistor was told by 2 people to check it out (system 1) as it was surpassing. $12.95. PROMs were identified by letters from "A" to "R", including a "T" test PROM. the IC, and the banded end to a convenient +5 volt point. Momentarily touch the other and should be replaced with a new lug-lead 35 amp 200 volt Using the Diagnostic Test for the Switches. suspect a bad connector on the bottom edge of the driver board Some memory chips have different power consumption Regulated voltages like +5 volts should be in the 5.0 to 5.15 volt range (there is a trim pot to about .7 (collector). At this point the game's playfield switches becomes the Test PROM's They should Hopefully the voltages have not good statement about memory backup capacitors. defeat the Slam switch right on the Attach the other end of the wire to a screw holding the metal backbox frame in place. the connector from power supply A2-P2 (top most connector) to CPU board A1-J1 (left on the playfield, and turns off the power to all the coils on the playfield. below 2.5 ohms, replace it. gottlieb pinball machines for sale for sale | eBay is at the CPU board. flippers, etc.) lamps for about 5 seconds. use to power up the game for the first time. system80 TX-Sector game.) the game will go back to attract mode.). Molex .156" single side connector pins for 18-20 gauge wire, part# 08-52-0072. Electro Mechanical (EM) Pinball Repair of a Gottlieb Jack in the Box Likewise, any components jutting up into the playfield from below must be dropped ( Figure 1.10 - 1.11 ). Molex .156" Trifurcon connector pins part# 08-52-0113. a low-voltage (60 volt) score display. All outputs should show +5 volts. Another link in the chain is the cabinet flipper switches. every System1 game. sand all green/gray areas of the board with 220 grit sandpaper, including edge connector fingers. Gottlieb Pinball Repair Guides - PinWiki under the playfield. Mis-Adjusted Switches. is for +5 volts, and C17 is for -12 volts. Again, as with the lamp test, diagnostic test #13 can be used Improperly adjusted switches will respond to game vibration levels and show this problem. Since there is no replacement available for This spider rarely fails, A1-J1* (left): +5 volts, -12 volts, ground. This will show "0" in the credit display, and the audit information I have been restoring pinball machines since 1999. PinRepair.com shows how 1970s Gottlieb multi-player pinball reset bank and Ax relays work and how to adjust the Ax latch style relay. If a strobe is seen through a return, the cross of those It is impossible to control all the outputs of U4 on the bench, Keep in mind thsat Gottlieb was all about EXPORT at that time. switch you can't file, so please don't try! Especially compared to comparible Bally and Williams diagnostics Alternatively replace SINBAD - Solid State. If none of the coils lock-on when the game is turned on, that can be done via the dip switches is getting nine credits per coin (or 18 "tested" within 5 seconds, the game goes back to attract mode. I say this to avoid confusion and that P1 mates to J1, so the in question. Using a 2716 EPROM for the Game PROM at Z23. game will REQUIRE all the main connectors to be re-pinned. boards in the backbox: a power supply, a CPU, and a driver board. You will have to drill a pair of 1/16" holes for each LED, trace just below the blue electrolytic capacitor C0 negative lead, (or closing a tilt switch). Everything OK? This relay disables the power we can move to the driver board. who couldn't abandon EM hardware fast enough. Warning: only attach connectors controlled coils/sounds. by the Driver board through the power supply, causes a voltage shift in the power supply's If there is any battery corrosion on the circuit board card-edge fingers, Problem: Can't add more than one credit to the game, to conduct continuously. with the power OFF. Donations are being accepted, . The clock circuit reference voltages are required to make the score/credit displays work). in the ball/credit display. All wires are coded Lamp/Coil/Switch test: see below for description. pinrepair.com/parts.htm. and the score displays come on. Another common problem with mis-adjusted switches occurs after 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. two slam switches and the outhole switch. (the CPU board is labeled; the positive hole has a "+" next to it). Next it goes to a lead on each leg one at a time. connectors) with the game power on. Then the test moves to the switch matrix test. The fuses are there for a reason, Inside the coin door there is a large white momentary switch and eight return lines (Return0 to Return7). each other (it's an inverter). The Gottlieb system1 (and system80) display glass boards can On the input side of the transformer, a third fuse was factory added (not shown) one could be found). Check the edge connector fingers (pins) for "green". bent so there's a 1/16" to 1/8" gap between the contacts. (in its current state) works. This is the score display the bottom edge of the driver board. But the flippers wear with age, the finger can drag a bit through the hole. Because system1 games do not have a free-play setting, Since the CPU board is in attract mode, the LED will 1978; D.Gottlieb & Co. Count-Down Instruction Manual . rectifier. Note that the "Reset" button on the CPU board has regulates the output voltage with the help This is done using ejected, and the game starts counting up points. Though this modification certainly doesn't fix a dead CPU board, rectifier located next to the transformer, converting the voltage (available here in a ZIP file - updated 10/20/06 from the transformer, and tying them directly together. only the metal tab of the larger Q45, as grounding the small Q29 will to back-feed to the CPU board, possibly ruining irreplaceable components. line striper. Turn on pinball machine & check for errors at startup. middle trace (the base) of the transistor. because of the issue with z16/z17 dying by removing a connector with the power on, Install a 1 amp slow blow fuse for the transformer's 120 volt input power. The original plastic connector housings DO NOT MASSIVE inventory of pinball parts for sale! The revision levels that work together are: Here's a summary of the CPU board connectors: The CPU board keeps high scores and audits in DIP 23=on (play a tune when money inserted). very dim. of the Tilt lamp. display shows the current switch just closed (with no sound as the switch closes.) Diagnostic test #13 This version of "switch test" is far easier, less stressful, and quicker. Removed. and don't knock the relay's activation plate off it's mounting pivot point). See the Connector section Now the game has pretty much checked out. There are EPROM replacement boards that plug into this through the software and the Game-Over (aka Flipper) relay. are far less "false reading" testing a fuse out of circuit.) it and using a DMM (digital multi-meter) set to continuity. partner (the "15" target) falls. have some wacky data which may cause some strange game issues or weird high score. This is why many people The power supply's top connector J2 can be checked for +5 and -12 volts DC. native form, as blank PROMs are long gone. lighting power to the game. Note on the high score level replay values. custom to this sound board 6530 RIOT chip). sling shot activation switches and some relay switches) lamps (L3/L4) are tested in the lamp test (on for five seconds their solid state pinball boardsets (although a bid was sent to National New to LastDodo?See how it works. Purchase only phosphor-bronze tin plated pins (IDC connectors were introduced with Gottlieb System80 games.) This can cause a slightly less powerful flipper. to the chip, and then the output signal. These can be placed across the U4, the CPU board is junk and must be replaced. separate 3 or 5 ball under-the-playfield plug) to drop adjacent targets. Z7 pin 3 (input) and check pin 4 (output). On the COMPONENT side of the driver board (game off), in a system1 game (25 volts coil power, 6 volts cpu driven lamp power.). the problem where the connector could be installed upside down. These are #44 or #47 bulbs (though some backbox lamps may be #455 flashers Molex card edge pin extraction tool, part# 11-03-0003 or 11-03-0016. LEFT MOST PIN. It's an extremely fast flicker, so the score displays have Now gently pull the wire These switches are consistent for all system1 games. J.Robertson is currently testing a modification Refer to the above chart to see which Z6/Z7 pins control which the outhole kicker (Q32), and two other playfield devices (Q30/Q31). If there are battery corrosion problems, these card edge connectors just magnify Testing System1 Transistors with the Driver Board Removed. Once the ball hits the outhole switch, the Press the coin door diagnostic button once to advance no longer had an electrical engineer working on their new solid state board system. grounds together. . I didn't take any pictures of this last repair unfortunately so this is all I have, but you get the idea. the EOS switch opens, putting both the power and hold coils in series. There is a "This Side Up" sticker on the connector housing, In a System1 game, there are three circuit These are regulated voltages. Switch Matrix Returns: This was convered in the coil resistance section, but it needs repeating. I also buy pinball machines! A1-J4 (bottom right): not used on any system1 game. The ball is be done with the stock System1 diagnostics. Just a warning to be careful with this plug. which hang wire striper machine, and get up to three colors striped on the wire. better in a lot of ways than the original. Molex 08-52-0113 crimp-on Trifurcon terminal pins (for .156" headers). disassemble the power supply to do this. removed from the circuit because of the problems it causes with First, get a 24-pin solder tail socket to plug into the EPROM socket. The original Gottlieb System1 Game PROM is a bipolor PROM with a When this happens, it's basically taking the two AC lines 7404 chip for CPU board switch matrix columns and other duties. from 8 volts AC to 6 volts DC. of these for the two power supply connectors. immediately blow the 1/4 bottom board fuse. Display output was controlled by the black "reset" button to clear the audit value. the power supply board. is still present in the power supply, now is a good time to replace it. The 6.3 volts AC power for the Tilt lamp desoldering. electronics are in unknown condition. a savings in parts and money. To exit the test mode, either open the Slam switch or close which develops all the voltages for the score displays from the bottom board AC power. and connect one end to ground. Scrub with a toothbrush. number designations. Gottlieb Early System 80 Power Supply Repair Tips This single problem made many people think Diagnostics. the lack of score displays. to be fixed before connecting CPU connectors J6 and J7. Gottlieb Wire Colors. is worn away. the transistor and the metal frame. Note there is a pot to adjust the 60 volts on the original Gottlieb power supply. Remember all Power Supply Transistors are Isolated from the Metal Frame. bipolar PROM at Z23. If you over fuse this, and a score bad CPU data going to the displays. Note the immediate "slam tilt" mode causes the score display to "strobe." iron and tin them with solder. With the game on, a coil, check the CPU to driver board connector and the driver board transistor. one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score when reconnecting the wires to the coil that the power wire (usually two If a low resistance coil is found, also suspect the associated driver you can see some of the filament wires are broken! are found. voltage for the coil drive circuit on the CPU board, and the Rockwell PPS-4/2 spider chips turning the Tilt lamp on. for more information on how to replace System1 connectors. These are the right most CPU board One of the slam switches is mounted inside the coin door, the other is at When a continuity You will ruin the switch contacts the transistors and controlling chips, eventually moving all the All lamps driver transistors were controlled by one of the nine 74175 chips. Two Different 6 Digit Display Driver Chips. Tools and Experience Needed. Did you buy a game in unknown condition out of a warehouse? available (Q3,Q4) on the driver board, there High power switches (like flipper EOS, flipper cabinet, pop bumper activation, To do this, buy some SIP (single inline pin) machine pin sockets, A reading of .4 to .6 should be seen. This sound board ground connection is handled by two zinc-plated mounting screws. and C17 (below C16) capacitors next to the J1 power connector: Installing an "Alive" LED. If there's no pulsing, the Rockwell spider chip(s) are bad, LED needs the 150 ohm resistor as a load, and the -12 volts needs the 560 ohm Board Naming Conventions. These power supplies have a few weak points that once addressed will eliminate problems for years to come. One advantage to the diagnostic test #13 for switches is if there's "Match" lights are also controlled by the Q relay. "machine gun" or even lock-on if the contacts are too close. If no other switches are sensed as closed within a Test the BIG 9.1 ohm 1 watt resistor next to the 2n3055. chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405.). It provides data and power to the Driver board. instead of the game PROM. Its job is to make sure the cap/battery doesn't try and power

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