Pinball Circuit Board Repair And Restoration

When reading through this information there is a few ways you can navigate. You will see our links to the Figures within the content. When it opens the window, you can click the next or previous arrows to move back and forth between the Figures. When you have viewed the Figures you want to see, you can click on the X in the corner to go back to the text. If you prefer, you can click on one of the Figure links and keep clicking next all the way through to the last Figure referenced on this page.

When I say circuit boards I mean all the boards located in the backbox (Figure 3.1 – 3.4), and any located in the lower cabinet. Most circuit boards will be green, and some will be red. For clarification, I also include the player displays, or dot matrix display in the circuit board category.

These components are as important as your upper and lower playfield, as they are the brains of the operation. If they are not functioning correctly, nothing else will be.

Some of the most common problems found in the circuit board area is battery corrosion, expired filter capacitors, burnt &/or brittle connectors, bad IC sockets, cold solder points, broken fuse clips, poor ground lines, and required safety modifications.

I always start with the power distribution / rectifier board (Figure 3.5 – 3.7), as it takes all the different AC voltages and converts them to DC, which is what most of the game circuits operate off of.

Once this board is rebuilt (Figure 3.8), and it’s output voltage is all within proper operating specifications, then and only then can I move forward with powering up the other components. At this point any other issues will reveal themselves, and can be corrected.

Many problems on these boards are connector related (Figure 3.9 – 3.10). I spend lots of time changing out connecters, and both have to be done, the male pin, on the board, and the female in the connector housing.

Each board is pulled out one at a time, and all solder connections are re-flowed, board mounted battery packs are removed, and remotely mounted (Figure 3.11 – 3.12), with a quick disconnect. Many board issues were caused by pinballs being stored away for years with the batteries still in place. Batteries over time leak fluid, and gases. I’m sure we have all seen the damage done to old radios or toys that had the batteries left in them; it’s the same for pinball machines. For those that are wondering what the batteries are for, well they hold things such as the high score thresholds in the memory, and game parameters such as free play and so on.

On all early Bally & Stern games I remote mount a custom made bridge rectifier board (Figure 3.13 – 3.14). The original 3 bridge rectifiers were very under rated for the job required of them. (8amp-200 volt) When they fail, they are very hard to replace, requires much de-soldering, basically a service call. The 3 new bridge rectifiers (50 amp-1000 volt) if they ever fail, are function identifiable, and easily changed.

Player displays on many of the older games will be what’s called gassed out. These cannot be repaired. The industry now has access to new LED displays that require much less power, which provides greater reliability; as the high voltage section on the power supply can be turned off, as it’s only function was to provide power for the plasma displays.

Again, I’m not going to go into huge detail, just trying to let you know the care that goes into each rebuild / restore here at Absolute Pinball.

I was satisfied with Devron's services. His prices are reasonable and he is very knowledgeable. I bought a circus pinball machine from him two years ago. He has done an excellent job of refurbishing this machine. I can phone him anytime when I need questions answered or need to tweak my machine. He is always happy to help me. I would definitely buy another machine from him. I highly recommend him to others.
I just wanted to drop you a note to let you know I received my Space Invaders Pinball machine yesterday afternoon. It was very well crated and arrived without any damage! I have set the machine up and all works as it should. Thanks for coding the plugs, and providing the set-up manual. It has been a pleasure doing business with you.
Hi Devron, I picked up the Buckaroo yesterday at the airport and got it put together this evening. It made it through the trip in great shape, thanks to your great crating job! Nothing was able to shift or get loose and you did a fantastic packing job! The machine looks and plays great! The new backglass arrived last week so I have to put it in to make it look even better. I'm real happy with the machine, and thank you for your very accurate description. Thanks, again, for everything and maybe we'll have the chance to do business again in the future.
If you want to buy a pinball machine without the fear of inheriting someone else's problem – buy from Devron. He is meticulous in his restoration of machines and will never let anything go out the door unless it is 100%. I have seen the results of his work on many occasions and I am always amazed at the quality, and attention to detail. Many people and businesses claim that they have "shopped" their machines, but with Devron it’s the absolute truth. He goes through machines top to bottom, inside and out. I have plans to buy a couple more machines over the next few years, and I guarantee they will be from Devron. I just know that it will be done right.
I have been completely impressed with the professionalism, knowledge, and honest dedication to customer support that Devron Gibbon of Absolute Pinball has shown me.  His enthusiasm and respect for the art of pinball is readily evident in the quality and thoroughness of his restoration work.  Devron's willingness to answer questions and to assist a 'new to me' pinball machine has been remarkable - he honestly cares about his customers.