I just joined this club last week with a James Bond 007, I was kind of hoping that I would have gotten in with a Hollywood Heat, but a barcade type of place not far from me is selling all their stuff, and I picked up the pin and a Mortal Kombat II arcade game in a combo deal. Plus I really like the James Bond 007 because it has both the unique timed play scenario, and the four flipper set up. I am going to use it as an opportunity to do the 3-5 ball play ROM mod, to get some experience with ROM mods before I try out @slochar’s mod on the Flight 2000.

The only thing that is not working is the bottom pop bumper. It did not come with a manual or schematics, so if anyone could help me out, I would greatly appreciate it. Pop bumper driver boards? What’s up with that? Thanks.

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Pop Bumper: I screwed up again taking something apart, by not making a note of which wire was which when I tried to switch out a Gottlieb A-1496 with a stern J-26 1200, to trouble shoot why the pop bumper ring does not engage when the skirt triggers its switch. I looked at the 007 manual and the system 80 service manual but am not seeing anything. Thanks

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neither way worked. So i want to go back to the original coil. This is a James Bond 007. Thanks again.

Are the wires interchangeable on pop bumper coils? I’m thinking they are not...

I was not seeing the Black - Black - Yellow wire on the other pops.

First pin the house, so I can check these things much more easily now. Right now I have:

Lower Pop Bumper Coil: Diode Side: Black-Black-Yellow / Not-Diode Side: Purple-Red

Middle Pop Bumper Coil: Diode Side: Red-Red-Yellow / Not-Diode Side: Purple-Yellow

Upper Pop Bumper Coil: Diode Side: Red-Red-Yellow / Not-Diode Side: Purple

Lower Pop Bumper is only one not working. I took readings of the coil and switches and compared to the others and they seemed similar, so I will next switch out a driver board from one that is working. I was looking at the driver boards though and did not see anything that I could correlate to which pop bumper it would go to. Are the wires supposed to match?

Should have written “band” instead on “diode”

I think it is low, mid, upper from left to right, in pick because the wire on the 1 pin in the driver board is matching up with wire on the non-banded side of the diode.

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Which I guess answers my other question about which wire goes to which lug On the coil.

Pop Bumper: definitely went in the wrong order. So after changing out a coil, and switching the PBDB’s, I switched out fuses, and the fuse blew when I triggered the pop bumper. So now I “see” the problem. Just need to figure out how to fix it.

I was going to start in on the ground modifications, thinking it will solve the issue, but I realize I don’t have all original boards, which is what the PinWiki site describes. I have a rotten dog MPU. See pic, did someone do and then undo a ground mod on this board?

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Wow, who would have thought that installing a fresh fuse would have taken such a long and winding route? I think the fuse blew, in part, because I had in fact crossed the wires on the stern coil that I swapped in; because after changing the driver boards i did not get any different results, and the driver board for the non working pop was working to power the other pops. Then I realized I had crossed the wires, so I put the original coil in with the wires correctly configured, and put a fresh fuse in, and viola, pop. A bit week at first, plus double popping, but at least its working. Now if only I had the two other fuses, I would have three working pops again... Thanks for helping me stay on track!

The hardware store only had 3A slow blo fuses, so i put those in, and all the pops are working. Now I just need to figure out how to play with these dual flipper set ups. Lots of whiffing between the two flippers. Plus I really miss the center post on the stern F2K.

If i have a system 80 w/ a rotten dog MPU and a NVRAM power supply, but an original driver board and sound board, will i still benefit from the ground mods?

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thanks. I’ll have a go at it tomorrow...

System 80 ground mod: Just wanted to make sure i understand what I’m doing. I have only taken things off of boards, but i have never added something to one. I’m attaching a photo showing where i Think i am suppose to solder the end of the new ground wire. This is based on the photo from the PinWiki description. Am i right that you just solder the wire onto the trace and the trace is the line that runs from point to point in the circuit, where the trace is narrow in some places, and then, like the back of the sound board where PinWiki says to put the other new ground wire, the trace can take up a whole patch of space? Please let me know if the markups on the pic are not discernible. Thank you.

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System 80 ground mod: also i am very curious whether the ground mod has an effect that will be apparent based on before and after mult-meter or logic probe tests. I would really like to learn more about using these tools to troubleshoot, etc., and find that i learn best by doing, and hoping this an opportunity to do. I tested the pop bumper coils when i had the fuse problem, and they seemed fine, but since i was not confident in my readings, i kept focusing on the pop bumper, instead of moving on to the fuse (plus i didn’t even really know where the fuse was, at that point, so it was also that).

Thanks again

I see so it’s a matter of there being no difference noticeable now when the machine is okay, but if their were to be a change in future and the machine is not running properly, and I do the mod then, that’s when I would notice the difference and see what the ground mod had corrected? Moreover, the mod is there to prevent the machine from not running properly, so that I will never see the day that a difference is noticeable.

Do you test for continuity of the ground circuit at the point where the ground wire is leaving a board or other place? And I am just testing to see that there is continuity right? Do I also need to see a particular amount of Omhs? Thanks again

So if have just been doing practice attempts on a random board from a PC PSU i found at the dump. My best so far is attached. But I’m thinking that it would still need work. Am I right that my wire cannot touch any of the solder on the heads of the pins sticking Through, or on the other side, it should not touch the solder connected to the wires, pins, etc., that go through to the other side. For the driver board ground mod I am doing it looks like an chip and a few resistors are closest to the trace I’m working on.

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I’m realizing that the actual pin my wire is touching is connected to the trace that i soldered onto. So I think my question should assume that the head of the pin that i am touching is not directly connected to the trace i am joining...

Yeh, thanks for that advice. I was chasing the little balls of solder around a bit too much. I think it went alright, see pics. But damn if I didn’t just look at the power cord. Does the cord negate the effect of the ground mod, since there is no ground prong on the cord?

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From what I understand about electricity, the ground is there to prevent people from getting shocked by touching things. But I am also hearing that the ground serves a purpose within the circuit where if there is no ground then the machine will fail because certain components will fail. So is it both reasons?

Done

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Should the ground mods be done to non-original modern boards, like the rottendog MPU, and the x-pin power supply boards?

Wow. Even the wires! Did you clean them or install new ones?

Is there any way to know where to connect the ground wire to the modern boards? Pinwiki page just has the pics showing original boards.

The MPU has some signs of a previous mod maybe? See pic.

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See pic. The part I circled is NOT what you are referring to i, I think. What is the part I circled? Pin is James Bond 007.

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Thanks

With a little help from a friend, I was able to figure out the ground location on the modern boards, which was actually way more obvious than I had anticipated.

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