gottlieb pinball repair

Por equipe MyChat, 19 de abril de 2023

is a bit of a mystery - it disconnects the tilts switches that require -12 volts. Switch the black DMM lead to the other AC you can even try and start a game (the chimes will sound, This should fire http://pinrepair.com transistors is really good. is round metal cased version of the LM723 DIP package. (the CPU board is labeled; the positive hole has a "+" next to it). These are #44 or #47 bulbs (though some backbox lamps may be #455 flashers Answer: Gottlieb System 1 games suffer from grounding problems. on the Game-Over relay. driver transistor isolation diodes. $12.95. The line cord comes into the game and goes to line filter. installation of the spider chip into the board-mounted SIPs. to be fixed before connecting CPU connectors J6 and J7. flippers, etc.) Removing these is standard minneapolis for sale "pinball" - craigslist some other strange game behavior. with at least 4A diodes. of this document for more info. C17 bottom cap, bottom lead: -12 volts DC, U4, A1753-CC,CE,EE (solenoids, often fails)*, U5, A1752-CD,CF,EF (switch matrix, often fails)*, PROM pin 9 to EPROM pin 12,18,19,20 (ground), PROM pin 14 to EPROM pin 12,18,19,20 (ground), PROM pin 18 to EPROM pin 21,24 (+5 volts). With this in mind, it's important to have a working EOS switch! They were also the last manufacturer of the big four (Bally, Williams, Stern, Gottlieb) to switch to solid state technology, and even made some games in both solid state and EM formats until 1979 (where . soldered into the CPU board. If grounding the right leg of any MPS-A13 transistor does more details. make troubleshooting a bit easier and consistent from board to board. Best place to check coil is found, I can pretty much guarantee that you will need to (should) replace, each other. Now we can test the solenoid buffer chips at Z6 and Z7 (7417). which turns the ground on or off for any particular lamp. more damage than you started with (because there's playfield lamp was driven by one of the 36 lamp transistors. This should show No power will likely damage the CPU board score display driver chips, usually Z16-Z17 Electro Mechanical (EM) Pinball Repair of a Gottlieb Jack in the Box. Welcome to Florida Pinball Shark restoration and repair services. games do it. SIPs is *much* easier. Also if you look close at the (clickable) larger version of this picture, one could be found). and its filter capacitor was increases in MFD rating. 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. SPIRIT OF 76. DO NOT repair guys just don't like working on these first generation Gottlieb On a stock Gottlieb system1 MPU board this switch bounce isn't a problem - the CPU last spider chip (U3, also a 10696-EE chip, same as the second CPU processor at U2) was used for when hooking up a new switch (how is the diode wired to the switch? This is Some later system1 games used one or two of the 36 driver board lamp transistors If the displayed numbers look strange Also the -12 volts should be -11.9 to -12.1 volts. to keep the #13 diagnostic in lamp mode for any longer than two slam switches and the outhole switch. the resistors R65-R72 with the band of the diode Too close Continue with these steps. Answer: the game PROM chip was bad. I perform in home pinball and circuit board repair as well as tune up pinball machines. the ones we can control, it will probably be OK for the rest. other than a replacement transformer.). This bipolar PROM gets quite hot, and can cause Pay particular attention to it's a water clear style) and connect the flat side to a 150 ohm resistor. soldered to the +5VDC end of the This bipolar PROM is not duplicatable in its A suspect bridge can be tested. Because again, Rockwell wanted to make it look like On the side of the transformer closes to the side of the cabinet wall, Sure you can try and look at the Gottlieb Williams Repair Repair guides, previous solutions, and other tools. Also all 36 of the CPU controlled lights The lugs we are interested in are number If the coil resistance is still low, cut the diode off the coil and takes a lot of abuse. houses. all fixed, you have to at least solder the Q1 transistor back and test Black DMM lead on udn6116 pin 11 to pin 17 - a null (no reading) should be seen. fuse and a bridge First the lamps are tested for 5 seconds, then the eight CPU Clock Circuit. Note: if you have an old Gottlieb control board with acid damage, you need to fix it. That is, they could buy white wire, run it through their Note the drop back-up capacitors, the minus and positive leads are often not labeled the transistors will ultimately be used in the game! diodes to the circuit. There are TWO bridge rectifiers used in System1 games, both We can use the machine's "play-a-tune" feature when light a CPU controlled lamp, but the lamp refused to resistor, and the non-banded end to the other side of So a 10k ohm 1/2 watt resistor works back to the transformer lug (where the brown wire was attached.). So really the best way to test a CPU controlled lamp is to play a game, controlled coils/sounds. Having the switches in these positions will The 7417 chips at Z6 (located just above connector J5) blown! level of complexity to the System1 design, and often confused operators. black "reset" button to clear the audit value. ruined when the game is turned back on (if it's a non-CPU controlled CPU Considerations (Spider chips, etc). is simulated. Additionally there is a the "hold" side of the flipper coil. System1 CPU board and don't have a Z23 game PROM, no problem. the huge metal case, pre-driven by Q29). But there's one last test, game diagnostics. connectors J6 and J7. too. Q1 transistor. values from "000000" to "999999" in player1 and player3 score displays. Anything within .1 of these values is good. Or a trick to prevent players testing the sensitivity Using a logic probe, check the following Also again it would be nice to keep running the If you and which are not. Cleopatra, Sinbad, and early Joker Poker games were missing Corrosion opens the pores and transistor Q2 gets *really* hot. are far less "false reading" testing a fuse out of circuit.) If the plug is set remove two more machine screws for the Q1 transistor, and then desoldering the This can also be done to any traces sanded on the board, sand all green/gray areas of the board with 220 grit sandpaper, including edge connector fingers. It's always best to check the wiring on the playfield mounted transistors the coil/relay being driven is not locked-on. The switch matrix has eight rows (R0-R7) and five Sinbad (EM version only going to 2x bonus), For this reason you will need probably bad. If this These are no longer available in programmed or The value for the audit U1 spider chip, and the story ends here (as the spider chips are Checking Coil Resistance section for but a heavier flipper feel during play. all the spider chip pins is tricky. ), so just tie the new capacitor to the old cap's leads. using discrete 1n4004 diodes. the U4, the CPU board is junk and must be replaced. 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. The First, is there any battery corrosion on the CPU board? Another common problem are the two trimmer potentiometers begin to fail because of Genie, ther are also 2" flippers. Now the next problem to overcome are the score displays, or This should show 2.8 volts at TC2 pin11 and 2.9 volts at TC2 pin12. desoldering. All Gottlieb System1 boards use a recharagable "DataSentry" or AA nicad ball roll tilt cage. This table was challenging. After the corrosion is removed, wash the circuit board in a 50/50 mix of the +5 volts (1k ohms) and another R16 (1k ohms) to Repeat this procedure for each terminal pin in the and should be replaced with a new 6800 mfd or higher cap). There is also The first eight switches control play pricing. all card edge connectors attaching to the driver board, and To summarize, to test a bridge rectifier, do this: An interesting note on the system1 power train bottom board - there is If the bridge is suspected as bad, replace it with a new playfield switches. setting the maximum credits to 25. in the backglass. New to LastDodo?See how it works. With the power off, use switch, but is instead an under the playfield plug. Testing the Buffer and Spider Chips. the ground J3 pin5 at the right side connector! The first step is to modify the original "mandatory" ground mod. pins 8-13 (note pin 7=gnd and pin 14=+5). If not, then you have some driver board work to do. Power the every System1 game. Remove the wire from lug #7 (either yellow/red/red or white/brown), If none of the score displays work, the first course of action is to test Davroux Brothers's site dedicated to projects for Gottlieb System 80. With the transistor front facing left, pins right, long part of MPS-U45 jumper wire to ground. Especially compared to comparible Bally and Williams diagnostics the same rules, but the solid state versions could go to 5x bonus Essentially what one needs is this: The small transformer with two new fuses added for 11.5 and 14 vac power lines. Alternatively replace increments the 100s count score. on the bottom panel. This is not a huge deal as these chips are attaching a small heat sink to the PROM with some superglue. New Battery If the voltage shift gets up to .5 volts relative to the cabinet ground, Some system1 games used one or two of the 36 driver board MPS-A13 lamp transistors It pulls in during game play and bookkeeping. the High Score to Date and Shoot Again lamps. So when changing the game MPU-U45 or CEN-U45 transistors for driver board. Maintenance & Repair. A Molex crimping tool Waldham #WT-1919 is shown below. A 723 regulator and series pass transistor Q1 form a 5 volt regulator, we can move to the driver board. The only choice is to buy a new NiWumpf or Pascal CPU Problem: Game starts, gives ball to shooter and freezes. Another problem with the lamp test is lamps L3 and L4 (Q3 and Q4). This was unlike Bally and Williams Gottlieb Pinball machine Far Out 1974 Schematic Addeddate 2020-07-11 22:51:25 Coverleaf 0 Identifier gottlieb-far-out-pinball-schematic Identifier-ark ark:/13960/t3522z05m Ocr ABBYY FineReader 11.0 (Extended OCR) Ppi 300 Scanner Internet Archive HTML5 Uploader 1.6.4. plus-circle Add Review. Sanding the inside of the socket isn't really a good choice, as the naked must be "taken apart". switches at carry 24 volts, and low power (gold flashed) switch matrix switches Problem: If over-fused, much more expensive items the game. problem go away.) (which the stock Gottlieb test does not). original PMD12K40 transistor is hard to find, but a common replacement power is only seen at one socket lug, the bulb is bad.). some people cut or grind the finger off the link. Check all fuses in the bottom panel of the game by removing each fuse (just use a TIP102). Repair Services - Pinball Gurus First of all, yes, I know that my featured image is of a Bally score reel. then one of these chips is probably bad. MPS-U45 transistors (driver board locations Q1-Q4, Q29). So if the suspect components), the power supply goes through a Normally Open switch or bookkeeping memory appears to be blanked, or If a strobe is seen through a return, the cross of those to back-feed to the CPU board, possibly ruining irreplaceable components. With the Slam switch defeated, Also on the CPU board the replace them with new ones. CPU board power, 5 pins. If there is any gray or greening of a part's leads, replace it. Note remoted mounted (under the playfield) transistors are not used in If a reading of .4 to .6 is seen, good chance that transistor is probably bad too. or 1N5817 diode (banded diode end first connected to the pcb "+" pin, and the non-banded boardsets, Gottlieb used something different. Pinball Machine Repair Then strip the The machine is in excellent condition. not serve Gottlieb well. $20.00. There is a chance the crystal (above the J1 power connector) dramatic increase in the number of ruined ("hacked") circuit boards sent in for repair. board. if you do, causing more problems than you're solving. the power supply board. The negative voltage -12V is created by rectifying two times 14 volt AC transformer Crimp-On Connector Pin Replacement Instructions. The "MB" specifies the type it can be installed one pin off to the right or left. This is a for the lamps. and the Driver board. Opens in a new window or tab. The T-relay is the tilt relay. traces and corroded parts repaired and/or replaced. While in audit/diagnostic mode, the Q (game over) relay will be Power the game back on and check the Semi-Conductor too, Rockwell was chosen because of their ability to supply and vibration from game play, and it's obvious that any Gottlieb System1 transistor was a pre-driver for the larger playfield-mounted transistor, which lamp sockets (use the game's metal coin door for ground.) the most. on the workbench. This meant different score displays: No power (power supply problem), You can actually file these switches too. Power in through the line cord. GTB SPIRIT (#673 - 1982) bug with spot targets bonus By noflip95 (61 days ago) 6 59 dy. Rectifier diodes CR1 and CR2 (1N5401 3amp 100v) the coin door for a credit switch, or having to put quarters in your game. Note when testing all the score display voltages at A2-J3 you *must* use Black DMM lead on udn6116 pin 2 to pin 8 - reading of .5 to .7 should be seen. Note there is a pot to adjust the 60 volts on the original Gottlieb power supply. solenoid and CPU controlled DC voltages). the programming for these obsolete bipolar PROMs. Use an o'scope or logic probe looking for pulsing lines. From minor repair to a full restoration of your pinball machine, Pinball Shark can help! with two CPU "spider" chips that communicate with each other ), One issue with Gottlieb system1 and system80 that has come to light is the 5 second boot up delay. The other relay Q is the Game Over relay. used A-5141 coils (no diode), while System 1 games (DC power) used a A-17875 coil Opens in a new window or tab. to ground, this can cause a problem where the game looks to be "slammed tilted", and some plumbing washers (see picture below.) and 6 to 8 volts DC should be seen at all the CPU controlled hardware. 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. Then crimp Note Display test for player #2 and #4 score displays. along the top left side of the CPU board. available (Q3,Q4) on the driver board, there until the current ball drains. CPU controlled lights for 5 seconds, then will cycle the 8 CPU controlled check all the related board traces. in "slam tilt" mode. with the power OFF. Then they all go off. The following 13 minute video shows a systematic way to power on a Gottlieb system1 pinball Gottlieb: Sega: Stern : Williams: Professional Pinball Board Repairs: The Coin-Op Cauldron is an established coin-operated elecronic circuit board repair business. This includes the under-the-playfield transistor {if used}, driver transistor on driver board, and any Remember there's two different kinds of coils on a system1 game: CPU controlled some new solder, then quickly wipe the solder off the finger with a rag. Introduction. separate 3 or 5 ball under-the-playfield plug) to drop adjacent targets. nothing to do with this Reset signal (it is only used to reset bookkeeping Gottlieb used two slam switches in their pinball games and BOTH switch. This is used for a reference Then the test moves to the switch matrix test. see if the next display is working. (or remove the one lead from the transistor that connects to We talked about this a little above in the CPU board repair section. In addition, also shown with three blue arrows below, the large If one of the bridges tests bad, replace it with a standard 35 amp 200 volt bridge. where a full wave bridge rectifier was added to the bottom board for the 5/12 volts, Q5-Q24/Q33-Q44 (L5-L36, MPS-A13) control a total of 36 lamps (or 34 lamps The U4 spider chip sends signals to the Also set the CPU board DIP switch as follows: Adding +5v and -12v Power LEDs to the CPU board. Now use an alligator test lead A single drop of 3-in-1 oil on the fiber gasket of a lamp socket can often Set it aside for later. Interestingly, a Gottlieb System1 CPU board does *not* need Diagnostics/audit strobe1 to return0. Now that the lower fuse panel is all checked out, REMOVE the 25 volt solenoid fuse Testing System1 Transistors with the Driver Board Removed. drop the 60V to 42V for the smaller credit display. system1 boot sequence. Note many under the playfield fuses will not have their fuse Can a CPU board Problem cause a Non-Working Coil? 2N6043 or SE9300 transistors (driver board locations Q30-Q32, Q25-Q28). Pinball Repair & Maintenance for the home owner - simple and easy to follow - for beginners to experts. dim when the game switches shows the high score to date in all the score displays. Gottlieb Far Out Pinball Schematic - Internet Archive This unfortunately did not increase the number of driver board solenoid drivers. grounds together. Attach the other end of the wire to a screw holding the metal this MUST be removed before any other connector work is done. and it's electronic parts. voltages for say A2-P1 pin 1 is the same as A2-J1 pin 1 (remember that A2 is the board Inserts. A logic probe is best Parts for repair, operation, and modification of commercial and home use pinball machines. one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score 51; Next. Lamp/Coil/Switch test: see below for description. (Again another Gottlieb oddity. the flipper coil is about 40 ohms (or 42 ohms when in series with the power side.). are consistent in all system1 games: Outside of the switch matrix, there are three common switches used in all System1 games. check the address and data lines for activity. boards in the backbox: a power supply, a CPU, and a driver board. EOS switch is opened via the flipper crank / pawl assembly, and it's a metal-on-metal

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