Announcement

Collapse
No announcement yet.

Record year for pinball repairs.

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Record year for pinball repairs.

    What a year just passed. I have worked on over 200 pinball machines this year. Great to see so many non working games now working again. I'm sure all the pinball repairers all over Australia have been also flatout this year.
    From minor faults to major jobs, I have seen the lot this year.
    I will detail a listing of most types of machines with the most common faults, that I have encountered.
    Hopefully it will be of benefit to others who own these machines.
    Will start the listing later tonight after dinner.

  • #2
    Sounds great Tony, it would also be a help to guys looking at buying a as-is machine. Would help them know what to look for, and have an idea of the $$$ it needs to fix.

    Comment


    • #3
      Royal Rumble 1994. I have seen this 3 times this year, because of it being a widebody game, I have seen evidence of the whole playfield dropping off its rails into the cabinet while being lifted up, resulting in the flipper board which is positioned underneath on the side of the cabinet being badly damaged also on another, a wire was severed from the transformer which carried the 50v to the ppb board for the high powered solenoids.
      Be careful if you own this game when lifting up the playfield.

      Data East games in general. A major problem is the fuse holders, they used a very poor holder which quickly lose its tension. Every time I check the fuses on one of these games, I always get one that snaps off.

      Jurassic Park, most common fault is the t rex positioning, this is governed by small micro switch underneath, have seen several times the switch arm snapped off or bent out of shape.

      Guns and Roses/ Last action Hero. the playfield magnets, these are very troublesome, most times the small magnet board underneath has a blown transistor that has also taken out the fuse beside it. These magnets are really a large coil that can burn out, these can be checked with a multi meter to ensure no dead shorts.
      Funhouse/Roadshow Most common faults are inside the heads, there are very small plungers that operate the eyes and lids, they are most times snapped in half. The plastic cogs that drive the jaws are also prone to losing teeth casing the cogs to jam.
      Bally/Williams games with the 6 ball trough. What a troublesome design, machine keeps kicking out balls losing track all the time. Most common problem is with the 7 opto switches, switch test will detemine which one is faulty. Finding a lot lately is another trough problem, when the ball is lost and drops into the trough, it just sits and doesn't roll down onto the switch. You have to remove the whole assembly and gently file out any little dents in the ball roll areas to ensure the ball does roll down correctly.

      Comment


      • #4
        Nice Tony keep em coming

        Comment


        • #5
          Most types of games. The general lighting, which in tech terms is called the G.I. Nearly every game that I have serviced this year has had some sort of G I fault. Most games have 4 or 5 strings of lighting that stays on most of the time, generally 2 strings are in the headbox and the rest for different sections of the playfield underneath plastics most of the time.
          Whether its because we are all using cheaper lamps which tend to burn a lot hotter, I'm not sure but the connectors are getting so hot and evenually burning and melting around the pins causing loss of lights in certain areas.
          I just change the connector to the molex type with the most better types of pins, which seem to take the heat a bit better. This heat also is causing a lot of dry solder joints forming on the backs of the circuit boards, these are easily fixed by resoldering the damaged areas, be careful when learning to solder that you don't leave small splashes of solder resting between pins. This can cause problems. Always try and clean up your solder job with a little solvent to remove the flux stain. Shellite with an old toothbrush is handy if you have nothing else to use.

          Early Bally solid state games from 1977 to around 1982. Most of the problems with these games of this era, is the power rectifier board which is the small circuit board located beside the actual transformer. Almost every one that I worked on, I had to change every connector as they had become burnt and brittle over the years, most games even had the wires soldered directly onto the pins bypassing any connector. The fuse holders should always be replaced and lastly you may as well change the 3 bridge rectifiers if they are the small original ones. Change them to the larger 35 w type which will do the job much better.
          These early Bally's are a pleasure to work on and can be made much more reliable that other games from the same era.

          All games, problems with switches not working. Because of the use of a switch matrix, all the switching is done in rows and columns of 8 x 8.
          What this means is that each row of switches has 8 switches linked together. Most switch faults are caused by a simple wire dropping off one switch which then causes several others to just go dead. If checking and they all look ok, just give them a gentle touch and make sure that the wires that have the clear plastic tips on the end are not broken inside this small tip making it look like no break, this is very common for them to break there for some reason.

          All games, a lot of games coming in from overseas seem to have this fault. Switches just going haywire causing all sorts of other problems, in most cases this has been caused by somebody replacing a switch and wiring the wire back on in the wrong position in relation to the diode. This really freaks out the game play. Always check that the wires go back on in the correct positions.
          Last edited by The Pinball Shed; 1st January 2009, 08:36 PM. Reason: Automerged Doublepost

          Comment


          • #6
            thanks tony. some great tips there. agree 100% re those early SS bally games. they are a pleasure to work on and if the restorer takes the time to do a comprehensive job (on connectors) then they can be made very reliable. Using an alltek board to diagnose is a good trick too. I love playing them too!

            best tip i learned this year and had 4 WPC machines with this problem was the J101 connectors from the PDB to the CPU board (both ends). This carries the 5volts for the CPU logic and when it drops low the machine resets. You can measure the drop over these connectors by testing pin 32 on the cpu rom against test point 2 on the PDB. In all 4 cases the drop was .20 or more volts and replacing the connectors fixed this and cleaned up all reset probs.

            keep em coming, the info that you guys have that are seeing lots of faults so regularly is gold. cheers and thanks.

            Comment


            • #7
              Originally posted by Pinball Shed View Post
              Finding a lot lately is another trough problem, when the ball is lost and drops into the trough, it just sits and doesn't roll down onto the switch. You have to remove the whole assembly and gently file out any little dents in the ball roll areas to ensure the ball does roll down correctly.
              Hmm, might have to do this on my Dirty Harry, it's doing this now about 1 in 3 ball drains. Usually can jiggle it on, but occasionally this is causing a tilt. (I have checked playfield with a level.)

              Comment


              • #8
                [quote=Pinball Shed;242763]
                What a year just passed. I have worked on over 200 pinball machines this year. Great to see so many non working games now working again. I'm sure all the pinball repairers all over Australia have been also flatout this year.

                Great to hear you got so much work this past year Tony.
                Over 200 machines is certainly a lot!
                Wish i could say as many but i didn't even come close to repairing that amount.
                I don't do call-outs so have to rely on people bringing the machines to me.
                Around 35 was it for me this year....actually the previous year was better for me.
                With so many people bringing container after container into the country ,there's little wonder there's going to be a lot more machines needing repairs.

                I'm glad your up there in Queensland and not down here

                Comment


                • #9
                  Nice info Tony.
                  Heading my way anytime soon. I can't figure out a GI prob in my GnR Pinny...

                  You're right about the fuse holders. I have a bout 3 or 5 that snapped when taking the fuses out to check...

                  If you sell them let me know!...

                  Comment


                  • #10
                    Good one Tony great read-next time I'm up your way I'd love to say hello..

                    Peter

                    Comment


                    • #11
                      Good stuff Tony.

                      There were a fair few fixes in there that I have come across with my machines and I spose it is good to know that in some ways, the problems are consistent amongst all machines and reasonably easy to fix once you know how.

                      Alot of repairs - I dare say a combination of more machines in the country as well as the age of the machines. They are no doubt getting to the age where bits and pieces are starting to fail. I think the connectors are a prime example - whether you use cheap or expensive globes, they aren't going to last forever. Parts are designed to eventually fail over time. As Mr Ford said, "I don't sell cars to make money, I sell cars to make money from spare parts." or something along those lines.

                      I would class the last machine I bought as a rescue. If the guy that had it kept it for much longer, it would have taken alot of work and $$$$ to get it back up to scratch. As it is, I am still looking at a fair few dollars to get it 'nice'. My point being - the guy had no idea and with a bit of time and effort, could have kept the machine playing nicely. Just little things like screws missing out of the trough switch bodies which meant they would move and then the balls would not activate the switch. Three screws later and the problem was solved. As you mentioned, 1/2 a column of switches was out......loose wire found, re-soldered and problem solved. Hardest part was finding the loose wire. All simple things that make or break a machine as far as game play goes.

                      Keep em coming Tony. They are going to be very very helpful to alot of guys in the future.

                      Comment


                      • #12
                        Thanks for taking the time to type that Tony. Much appreciated..

                        I know of some techs that don't want anybody to 'KNOW' their tricks...

                        Sad but true..

                        So again i tip my hat off to you.
                        _____________________________________________

                        INTERESTED IN GOTTLIEB VOLCANO and STAR RACE. IF YOU CAN HELP, WELL ITS A BONUS.......

                        Comment


                        • #13
                          Originally posted by Savage View Post
                          Nice info Tony.
                          Heading my way anytime soon. I can't figure out a GI prob in my GnR Pinny...

                          You're right about the fuse holders. I have a bout 3 or 5 that snapped when taking the fuses out to check...

                          If you sell them let me know!...
                          Just rebuilt GI on 2 x GnR lately, if you need some assistance let me know.
                          Last edited by silverball; 2nd January 2009, 11:56 AM.

                          Comment


                          • #14
                            Great Post Tony,

                            Good to hear you are busy

                            The more pins kept in happy running order the better.

                            Very kind of you to take the time and to share your experiences

                            Maybe there could be a special section dedicated to faults and remedies ?

                            Anyway great job

                            Cheers,
                            Ando
                            Pinball, Its an Addiction

                            Comment


                            • #15
                              there already is

                              http://www.aussiearcade.com/forumdisplay.php?f=75

                              Comment

                              Users Viewing Topic: 0 members and 1 (guests)
                              Working...
                              X