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Delighted to say I bagged this beauty recently! I only had one poor picture to decide in a very short time if I wanted it, good news is a courier has collected it for me and I will probably have a few weeks wait before it arrives! So we can all see together if it was a good buy or not. This was my guiding picture!

Ok, a bit further on, i have stripped the reel deck, soaked, cleaned and re-oiled the bearings (yes, 6 bearings, 40+ year old quality you dont see any more). Put it all back together and now the reels spin as they should. Sorted the payout and that is fine now. But and this is a head scratcher, it plays and pays fine, all lights work when they should, however when you get the nudge feature it starts of well but as soon as you nudge any reel once it will nudge the once and the machine will do a quick reset (a quick blip on pin 40 of the cpu). I thought it might be down to the sense circuitry of which the track runs right by the triacs and maybe a bit of back emf of the coils with them switching in and out quickly, however normal game play was fine (oh and also no sounds). Before i delved further into that i remembered that this machine as well as the nippy nudger rom also came with a golden nudge it rom card. So what the hell, i put that in. Interesting results, now it plays and pays fine, the nudges work (although the panel does not light up so i assume that is different lamp ouputs for golden nudge it) and the sounds work. The gamble feature on golden nudge it which is not on this one does not come into play, if you get a win you get the first tone of the gamble feature and then it collects. I then put my hand round the back to close the back door microswitch and it would not nudge again. Anyway after a fiddle about and a good kick and a wipe and wobble of the rom card it now works with door open or closed so i think my next port of call is to check the rom cartridge connector on the mpu and the edge connectors on the cards. If i did not have this to do and had to rely on christmas TV i would have gone stir crazy by now 🤣. To be continued........

New glass has been completed! Very happy with the finish and comparison. Would highly recommend Mikonos for any graphics.

Bravo!!! Bravo! 😀 RP8 is the culprit. Incomprehensible. I desoldered it and tested it outside the MPU; it's fine. I had tested it before, though. On the MPU, RP8 is allowing 5V to pass through. I'm very happy, very happy to see it working. It's a bit of an 80s nostalgia trip. I'm going to fine-tune the settings and run the test mode. I want to thank the contributors, Midibob, Andrew96, Northstar ( I had forgotten about you, sorry ) and Jimxxx, for their expertise; without which, I wouldn't have achieved this success. 🤝 Truly, hats off to you. Sincere thanks. I hope this thread will help repair other MPU3s. Gentlemen, thank you again.

Happy Christmas everyone, Well i had some time this morning and have managed to get the MPU up and running (my present to myself lol). The main fault with it being the 6810 ram was knackered but whilst i was socketing all the ic`s on the board and thanks to the retro chip tester that was found, it still didnt work after that but that turned out to be a bridge of solder on the 7414 inverter chip (think i might invest in an overhead microscope camera as my eyes are not what they used to be.) So now it runs and thankfully the 45+ year old rom cartridge is ok. Problems left to sort:- The sides, top and bottom of the cabinet need replacing (a job for warmer weather) The reel mech needs stripping cleaning etc as it is gummed up with decades of crap and barely spin. It dosnt pay out so i assume the optos and or circuitry (the slides work as it does give change for a 50p). The middle hold switch has broken behind so needs a bit of tlc / glue, bandage etc. Video below of how sorry for itself it is looking. Nippy Nudger.mp4

OK, what you have to note here is the 6561 is a 256 byte x4 whereas the others are 1kb x 4 albeit they have the same footprint. You can tell the smaller RAM machines as they have a 74LS03 instead of a 74LS12 for IC24. These are most likey to be MOD 1 and possibly 2, 3 and upwards use the larger RAM. There are others though that have a daughter board with a 6116 chip and this either plugs into the existing RAM sockets or is soldered directly to the board. You can make your own daughter board up with the 6116 chip (or equivalent) as these are easily obtainable and cheap.

Have had the missing button decals redrawn by Mikonos, and the glass graphic has been printed and is on it's way to me, thanks to Mike for supplying good images of the buttons

Far too early. Come back on 25th!

Here are the new lamp holders 👍👍👍

Now is good. Merry Christmas everyone! 🙂

Hi Guys Here is a brand new 40 odd year old layout from JPM. There is a read me file and a manual in the folder. Thanks to who ever uploaded the ROM on here for this:) The ROM I originally tried from DIF had a £2.10p Jackpot on 10p Play and double symbol on reel 1. Happy Christmas to all! Nudge Double Up Deluxe (JPM).zip

Ah got you, hard to tell on the smashed one, but I'm happy with it that way

Cross Forty is a circa 1976 electro from Lyngard Automatics manufacturing who were based in Cardiff. It is just a basic 5p play game with a gamble on some lower wins and a top win of 40p in tokens. Lyngard machines don't seen to be as popular, especially their big, heavy club machines. One of their best was Each Way Shifter from 1981.

Thank you, was described as not fully booting but worked previously so hopefully complete and not falling apart

I designed them on Tinkercad and got a local guy to print them. Tinkercad is really fun. Big thanks to MattyL for the heads up.

Well done for sticking with it and getting it going, perhaps you should buy a few more machines now you have bought all the test equipment. 🤣 As previously said above thanks to Bob and Andrew for helping and saving another relic. Well, what to do now, this story is over, the TV is crap, perhaps i should pay some attention to my MPU1, perhaps...........

👍👍 team effort!

Good evening. No, don't jump in the water. Not now. I have a second machine to start. You thought you were out of the woods. Just kidding. With everything I've learned from you, I should be able to do something on my own. And if I can't, well, I'll come and ask. Thanks again, gentlemen.

Sorry to interject here, i am enjoying following this thread and looking foward to seeing the machine run. As an outsider looking in sometimes you notice things that might help (or might not). 1. You say in an earlier post that you have tried a different reel deck (roller block) and the same fault still exists, this would mean that you have two reel decks with identical faults which is possible but unlikley. So can you confirm that the correct signals are leaving the reel deck (Bob or Andrew can talk you through where to test on that). If the above is not ok then it would seem the fault is with the reel deck. 2. If the above is ok then can you check the continuity of the green wiring loom between the reel deck and the mpu, also the green socket on the mpu and reel deck ( i can not see any mention of this being checked in previous posts). With the reel deck disconnected the mpu will see a fault and i imagine it goes through a sequence where it checks reel 1,2,3,4 and if there is no reel deck the first fault it will see and report is reel 1, again Bob or Andrew can confirm this. I will go away now and continue enjoying this thread. Jim Ps, as a relative newbie myself to the forum i would just like to say how good it is and the great people on here with the help and expertise they freely give, Well done everyone.👍

Yeah the guy is known to be good at what he does, he must have spent a good amount of time to just re draw the decal, and he is going to do the 3 missing button legends too

I managed to find a chap to redraw the damaged glass, looks good in the thread, just waiting on the actual decal to be printed and sent, he is also doing the button decals I'm missing so well happy link to thread https://www.ukvac.com/forum/threads/small-glass-art-reproduction.87391/

Great machine that is ronnie .

Hello everyone, You may remember a few months ago i mentioned this project to do one day and that day has come. The machine is not working but i am working on that (ie recapped, replaced voltage regulator and checked clock etc), anyway my main confusion is with the MPU1 as i may or may not have some components missing. I am not sure if it came from manufacturing like it or they have been removed (from the back it looks like the former and the front maybe the latter. My plea for help is could someone have a look at their board and tell me the values for D1,D2,R1,R2,R3,R4,C1 and T1, i may or may not fit them, i need to trace them out properly to see where they fall in the circuit but it does seem strange. I would be forever gratefull if someone could have a look. I have attached photos so you can see what i mean. (missing components in the red box) Cheers Jim

I've just uploaded the diagram for the early MPU3's which includes the daughterboard so I hope you find that useful. Do you mean how did I find out? Years of working on these and asking all the right questions I suppose.

Don’t think it’s too early now as I’ve just clocked off until January. All the best to all.

Hello. I found some 6561 modules at a reasonable price. Not without difficulty; in Germany. Otherwise, I would have liked to make the 6116 daughterboard. To be continued...

Scorpion 2 same cabinet as make a million etc same sort of gameplay

Good bag. Top machine that

Merry Christmas

Brilliant stuff ,they look jist rhe ticket .

Good afternoon everyone. No-one seems to have posted in this section for nearly six months, so I thought I would. My brother moved house last year, and one of the boxes he found in his garage contained a lot of my paperwork, including, amongst other things, my 'O' level certificates from the dim and distant past. The box probably came from my parents' loft when we cleared it. Anyway, I discovered a folder full of Bell Fruit paperwork from when I worked there in the early '80s. There are various documents about fault finding MPUs (black box), adjusting coin mechs, cams and microswitches (electro) as well as schematics for Super Nudge Gambler, Nudge Gambler Mk3, Firecracker, 21 Up Mk2, Plus Ten Mk2 and Hot Dog. There's also a map showing how to find/access the factory in Leengate, a 'boozy guide' to Nottingham and information for the Hotel Talsta, which is where I stayed when attending my Grade 4 training/exam in 1981. I'm hoping the Nudge Gambler Mk3 schematic will suit my recently acquired Nudge Punter. I will try to scan the documents in the not too distant future - a job for a rainy afternoon. I'm not sure what I can do with the schematics, as they're a bit big for my scanner.

Things have kind of ground to a halt, as we’ve had a lot going on recently, family wise. Hopefully make some more progress in the near future.

Nice... they look perfecto 👌

I've enjoyed following this thread, and very pleased that another machine has been saved. All credit to Midibob and Andrew for generously sharing their knowledge and experience. What a great forum this is.

Good stuff

Merry Christmas

OK, in one of the earlier pictures you show the reel deck with the lamps on. If you position the reels so that the lamps hit the sensors and you should measure 5v on pins 10, 11 and 12 on IC5. If you then cover the lamps so that they don't shine into the sensors (or force the reels round a few steps by hand) the voltage should drop to 0v. That way we can confirm the signals are actually getting to IC5. I'm still not confident this is what the problem is but it's good to check as we have to eliminate everything.

Belated thanks! Shame we don't have the original (very naughty) K-Klass sound ROMS that got BFM into a LOT of copyright trouble back in the day.

Had a play with it today and can say that it is worth the price. Took the ics out of Nippy Nudgers MPU1 and it failed the 6810 ram and was happy with both the 6820 pias and the 6800 cpu. I then got carried away testing a pile of old MOS CBM chip pulls i have (6502, 6510 etc). Still happy to have bought the retro chip tester as well, i think they each have their benefits. Think i might go to the pub now before i get too sad and carried away testing things for the hell of it.🤣

I went on Saturday and was treated to a warm welcome and free drinks. Can't remember shovelling so many 10p's into the slots before in such a short space of time but the sounds of the machines were fantastic, with the 80's music on in the background it was just like the old days. I got a few jackpots and lost a few gambles too. Glad to have made the trip, even though the trains were terribly delayed. My favourite was the JPM bingo fruit machine, forget its name. I remember some of them being really tight and nothing has changed lol, those being Chances Unlimited, Road Runner, Frog Hop and Fruit Snapper. Adders and Ladders is probably my favourite MPU3 shorter cab machine. Just a shame there were no taller MPU3's like Fortune Numbers or Strike a Light. Was also hoping for some BFM original Cops and Robbers. Maybe they will come one day. Overall a very enjoyable visit and quite happy to waste a few quid indulging in my childhood memories. Hope to visit again in the future.

next up is some 80's old skool fun in the form of Naughty but Nice on Mpu3 Tech, Thanks goto @WonkySausage - images @wayfinder - layout used for lamping references @Pook - main reel symbols @pete_w - for the star and NN symbol Shortcuts are listed within the notes This machine accepts All coins including 1p's,2p's and 5p's not £2 coins as they weren't around when the machine was released Enjoy and HAPPY Gaming!!!! Naughty but Nice £3 Dx.zip

Hi, thanks for that. I have noticed on a few of Bobs posts and mainly the MPU2`s that they are missing as well but the differnce being there is no solder on the holes at all so maybe it is a modification they made to the boards at some point, not knowing the history of the machine and lack of information in general leaves you guessing a bit. I have i think worked some out from enlarging some photos on posts but they are blured and confirmation would be good. So i think :- R1=100K R2=1M R3=100K R4=47K Diodes i assume are the same as the other signal diodes in the area (not zd). C1 is a tant of some value T1 i am sure i could work out but easier to ask.

I've just looked at an MPU1 that I have here and the components in the red area on your photo are present on my board. I'll get the values for them and let you know.

Another update. I scanned and uploaded some more pdf docs yesterday. I've also just tried photographing some schematics, but I'm not that happy with the results. I might see if I can get them scanned professionally. They range in size from A2 to A0 and beyond. The largest being 'Hot Dog', which measures 180 x 82 cm. 😲

New document added - Bell Fruit Microprocessor - TECH DOCS - The MPU Mecca Bell Fruit Microprocessor (Black Box) System outline, fault finding, etc.

Quick update. First document scanned and uploaded. Bell Fruit - Electromechanical Operation - TECH DOCS - The MPU Mecca More to follow.

cheers Phil I will do once it gets here

Unfortunately not. There are literally 100's of individual layers. I can export sections/groups of it in PNG though. Here is the top and bottom glass (PNG) with no background (unlit), so you can cut out anything you need. And the top and bottom glass with backgrounds lit, without the cabinet or mechs. I will also include the reels that I made as bitmaps. reel 1.bmp reel 2.bmp reel 3.bmp