Leaderboard

Hi chaps, and chapesses. As I get MPU3's in various states of damage one of the most usual things is the cart holder is either missing or broken. As everyone knows without the holder intermittent faults abound due to vibration. Trying to find spare carts is more or less impossible so I thought I'd have a go at knocking up a 3D version. Here's the 2nd attempt, the 1st one the mounting holes spacing were about a 1mm out. I can probably use it but wanted a good one straight off the printer. Having said that it does need a little filing to ease the connector in but everything lines up which is the main objective. I will install it this afternoon and report back but so far all looks good. The rough bits on the bottom are where the supports have to go to enable the raised bit which takes the metal brackets. I cut those off with a small chisel. If there's any interest I'll post the STL file so you can print your own or if you want to improve it. All I ask is you post it back here so I can use it as well.

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.

Wow, it's been nearly 5 years since I last posted in this thread!!! Just had a batch of MMM's in to sort. Most faults on these boards get cured by swapping out all the components in the battery area including the RAM. There can also be the odd broken via and corroded tracks but easily rectified with rivets and patch wires. One board which I'd had a few weeks previously had stopped working so I knew it was going to be a nightmare. On power up it would bleep about every second, flash a few lamps and motor drives and the 7 seg would go on and off too. Sometimes, very rarely, it would go into attract mode but not credit and then again sometimes it would credit but only on one denomination of coin???? After about 3 days of head scratching I was getting nowhere although I did discover some more faults that would have affected the lamp matrix overload (if it ever ocurred). So here I am on day 4 and I've got no idea what's going on, nothing is making any sense and the fault condition varies every now and then. Now I have two different game chips, one is 4 ROM chips (Cash Drop) and the other is Roulette which is 3 chips. I always use Cash Drop as it confirms all ROM sockets are Ok. So lo and behold with 3 chips in it runs a treat..... hmmm put the four chips back in and socket 4 if I move the chip with a little touch it boots fine or fails. Out with the socket and in with a new one. Not the easiest job in the world as the solder is grey and crumbly on the top side. A slight diversion here... A method I use to extract old sockets with crumbly solder is to apply heat with the iron tip (approx 370c) to the top side of the pin and when it melts the solder on the underside use a screwdriver blade to push the pin flat to the board (ie force it upward). Of course the socket will be ruined but it's knackered anyway. I find this breaks the seal and the socket can be removed a fair bit easier. Lots of flux is essential of course and the usual caveats apply don't attempt this unless you know what you are doing. Back at the ranch... With the new socket in the chip now is a snug fit whereas before you could extract it with just your fingers and of course it boots and runs fine. Phew!

David Mead came to join me in CS and together we repaired hundreds of SRU circuit boards and those damned Varelco(?) plugs that kept on breaking when you unplugged the board from the reel unit, what a design flaw that was. He had an absolute photographic memory and would remember details from older machines in seconds we had no need to have record kept, although he did as I remember and kept copious volumes of details. I met him in a pub a few months (years?) ago and he is still in the industry and is an engineer for one of the big companies, forgive me I know not which one. Tony Braggins went from development to HR, strange step but there you go. He spent years in that role before retiring and as far as I know became a trustee for a Nature Park. The R+D team changed massively over the years and as I have explained previously the 'cabinet populating' side of things all went a bit pear shaped prior to the introduction of the SWP's, so that will date it for 'you that know' a you may have read I was asked to take it over when on of the w@n7ers left, or should that be pushed. The software department obviously grew from the introduction of the SRU and although we started with two or three developers, eventually it went on to number at least a dozen or more as I recall. I wasn't too involved with the software team until I took over the PM role for the SWP's and then I had at least three working for/with me under the 'matrix management' project which was novel to say the least. I do remember a game we played in the software department which involved taking an eprom and placing it in the end of the Eprom packaging tube and flicking it upwards into the ceiling tiles where the legs would hopefully keep it there embedded in the fabric, of the tile. Cheers

Big thanks to Superbank and Clo. EPROMs have been burned and have arrived. I've tried them and they work! One step closer to reviving this Nudge Double Up 😀

I now have some reels and a display. Many thanks to Phil1974. He is your top man for sru bits...

Sorry nick I forgot to post this. just to finish off the thread that bargains are rare but they our out there(I was lucky this time and hopefully another member will stumble across one in the near future).

Decided to re-base my Adders after putting it off ages.. It was well fooked, needed doing.. Should last another 40 years now... 😂😎

Well..I have been chasing this machine, for the last decade. I missed it, on marketplace in 2015, and it recently turned up again, in Detroit. And even then, the seller has been very hard to get hold of. It's a rebuild of Lucky Strike So, a 400 mile round road trip this morning, to Detroit. The cabinet is in good shape. Things that are missing. The individual coin transfer chute, from the mech to the tubes. No back door. I haven't powered it up, as the power supply probably needs a good looking at, and this is a Rifa cap style PSU??. Anything else I need to know, before powering it up? Can't believe I actually own this, let's hope, I can get it, to work

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!

I would like to thank you all for your help and suport. My two machines are now good working with the regent files N°2. I would like to present you my new "toy" a slot machine whose name is "Golden luck" but it's not a fruity machine. Do you think that it's possible on the forum ? Here is a picture of the roulette.

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........

Send it to me, I'll put a new socket on for you.

I assume this is the Data I/O 22? If so did you know a guy called Mike DiBattista has written a Windows program to talk to all the Data I/O programmers and very good it is too. I use it all the time with my 29B. It's a free download from the groups.io forum DataioEPROM but you'll need to sign up first. Hope that's useful.

Working !! The new board arrived and when I took the old board out I realised one of the new chips was only connected one side !!! Put them in correctly and all working and know sec fault too !

Nice one pete and yeah phil does help out with rare bits .

I bought off a fellow cowboy. I wish I could afford to buy off licensed sellers for peace of mind with full after market service 😉

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

Cowboys in sheds know a lot more than certain licenced sellers

My last visit was great. I did a tour video to update you all.

easy one

Found this. Wish I had a time machine...

I remember 18 months ago when i bagged a Winsprint for £50(buy it now). It was a Sunday evening and i had arranged to pick it up on the Monday evening. That was one nervous 24 hours. There is nothing like that feeling when you have loaded it in the van and are just driving away.

Yet another board nearly drove me to insanity. Maybe I'm lossing my touch with age, who knows. Usual battery rot symptoms so all the usual suspects whipped out and renewed. A bit of track patching out needed for the alpha and triac driver links but other than that pretty clean. So on power up (with diags) the triacs all test OK then the tester alpha comes up with MPU4 ALPHATEST OK so all looking good. Thinking I'm in for an early day and just waiting for the lamp tests to start it comes up with an alarm and a bit of garbage on the alpha although I can see it's trying to say 'alarm' but no idea what. The RAM solder joints were looking a bit crusty so I thought that better come out, just in case, which was good as it failed on my tester. I've had similar issues before, like the previous fault above, so it's always a good idea to check out IC16 and put it in a socket which then gives you the option to isolate the CS feeds to all the support chips. Isolating IC5 the alarm was still apparent but the alpha then stopped on a readable 6840 error. Of course changing the chip made no difference. Just a little teaser here, I'd checked the 5v previously and it was a bit low at 4.77v but we all know TTL min rating is 4.5v and it boots OK so I thought I'd come back to that later. Big mistake!! Anyway back at the ranch getting nowhere and contemplating taking out all the support chips and putting in sockets which I did. After each replacement no change to the fault so 2 days later I'm losing the will to live. By now I've made sure all the Address and Data lines are intact plus every other line from the cart to the board. I'm thinking there must be a corroded via somewhere that I've missed. Rapidly running out of ideas and it's now day 3. There's only two options left, the first one is to jump in the Thames but maybe option two first. Thought I'd go back to the low voltage supply and see what's going on there. After stripping down the regulator I thought I'd run a test on the LM323 with my bench PSU and lo and behold it stuck solidly at 5v?? Hmm, what am I missing here? Tried a spare regulator chassis and blow me the board booted and ran fine. After all that wasted work but hey ho it works so put away the swimming trunks. So what was going on with the original regulator? Putting it back with the little board again it's measuring 5v off load but if I put a 12R resistor across the output it drops to 4.77v. It was then I noticed something on the radio. I listen to Caroline on 648Khz and putting the resistor on the output more or less blocked out the radio signal! Suspicion then pointed towards the tant cap that decouples the input to the LM323. When a new one was fitted the voltage remained stable under load at 5v. As the wires to the board power socket weren't attached they probably acted like an aerial otherwise I would have noticed this before. I'm sure someone up there doesn't like me.

If it's a solenoid sticking then the plunger and the inner sleeve of the solenoid will need cleaning but no oil needed, Check the small hole in the top of the solenoid is clear and not blocked.. Also check the lift arm which is attached to the reel solenoid plunger via a metal link, It has a brass bush and secured to the shaft with a metal clip, you can remove it and apply a small amount of grease to the shaft then refit the lift arm as it needs to be free and not sticking.... If it's the reel drum sticking then it will probably need a reel strip down. Each reel has a clutch which grips the reel drum to spin or nudge the reels, it also slips to reduce the torque on the reel motor allowing it to turn freely when the reels are held in position. The clutches are made of a leather disc which is normally soaked in oil, I use Neatsfoot oil for leather, They dry out over time and causes the reels to stick or slow to start or not spin at all. I soak clutch washers in a jar with oil for at a good 24 hours, the longer the better to allow the leather to soak up the oil, When you rebuild the reel mech, you do not need to refit the clutch washers dripping in oil but dab off the excess. Also while the reels are stripped apply a thin covering of grease to the main reel drive shaft which will lubricate the reel drum bushes so they spin freely too.

This mornings update..... Cleaned the contacts on the mpu rom cart socket and reflowed the solder connections on the back of the socket, cleaned the rom cartridge edge connections and reseated and cleaned the roms. Now both cartridges work fine (happy days). I think i prefer it with the golden nudge it cart in it as you get a few more sounds, ok the nudge now panel does not flash but thats an easy work around, however i am going to keep it original. Just need to rebuild the cabinet fix hold button 2 and remove and clean the reel solenoids as reel 3 is catching by a few thou. Still so impressed with the build quality and the fact it has bearings on the reels, infact that impressed i have attached a photo🤣. And yes i have addressed the hairline fractures on the reel bearing housing. Roms, cant remember which is p1 or p2 need to read them again and take note. VID_20251227_105457405.mp4 582e5e09.bin aafe44aa.bin

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.

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.

Well, she lives. Couple of teething problems with the coin mechs, need to get some starters for the fluorescent tubes. Payout is temporarily disconnected. Finally fitted the test switch (many many thanks Nick for your generous donation to this project). It's taken a few weeks, but I love it 20251017_182306.mp4

Hi I just manage to gett this up and working. Just wonder if was also used in UK. I belive it is the only backgammon ever made on a machine. Cant win money on this type ( but Cost. Money ) its only for play 2 player or against cpu, for high points. Snapchat-1701319154.mp4

basically if you don't have the gear then don't attempt it. low heat so as not to lift the tracks, never apply heat for more than a few seconds even with a proper temperature controlled soldering iron, and NEVER EVER EVER attempt to prise the socket out with a screwdriver! if it doesn't come out with finger pressure then its not completely DE soldered. there is no shortcut, anything that goes wrong like pulling away tracks, or pulling out the through hole insides WILL result in tones more hours in corrective action which takes skill to do. here is a video I did 9 years ago with the tools you are suggesting to do it.

Well the saga continues. It's now the 11th year I've been looking and this time I've come up with another AMP document. Of interest in this one is the addition of two more pin types which have soldered tabs for PCB fitting. Not seen these before but they are the normal type of pins (ie the crimp ones). Still no further with the solid pins though and whether they are a separate item or come pre-fitted with the shells. Comboline.pdf

Spot on, looking forward to seeing the finished article! 👌

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 into the “Johncade” showroom. Been abused as was stored in a shed. Will be bringer her back to her former glory using my cowboy techniques.

Here are the Eproms for you 🙂 Nudge Double Up Roms.zip

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

A quick update from the "Johncade". Pick of the pack now back to her former glory. A couple of video's including "It's a Jackpot" ;). Time to pull the next project in

I've just realised, I forgot to post the sound ROM for the Rol-a-top. So here it is. Cheers, Paul M27C4001@DIP32.BIN

Cracking little machine this, i remember playing this in my local arcade a good few years back. here is the 10p/£4 roms if you would like them as back up. nudge bonanza 4 quid roms.zip

Cabaret 144 jackpot😂😂😂

Yep, it does make it an MPU2. They obviously made these before the MPU2 was released to give the extra functionality, and then developed it into the MPU2. Managed to get it working today.

Hello experts So, Bob is right. I installed the wrong component: T56. 🙄 I was really incompetent. This board has already been repaired, and the previous owner installed the wrong component, BC172. I always check the component and the schematic; and on the schematic, it's a BC172. Hence the mistake. Now it starts; yes; Bingo! 🙂 😀 Thank you; thank you again. But, well, there are some problems: The sound; I'm going to replace T11. The display is acting up a bit. One scroll bar is stuck in HOLD mode. And others... I'm going to check the connectors, the soldering, etc. Thank you very much.

Well hello there! It's been a while (by "a while", I mean 13 years, the last WWC was in 2013. Thirteen years!) 🙂 I don't even know if anyone will actually read this (lol), but hey. Let's do it for old times sake, this is an MPU3 machine after all. Grab a chair and a rather cheeky glass of Saint-Emilion! *** I think it's fair to say a lot has changed in all of that time, and not all of it good. |First off, Wizard - the one-man genius behind MFME has been taken from us. I won't pretend I knew him personally; I dare say we had perhaps a dozen online conversations and interactions. His work and legacy speaks for itself, as does the great number of people he has helped and provided hours of entertainment - for free. Much has been said of his passing, from people whom it is vastly more appropriate and fitting to express such thoughts. I will simply say that every time I fire up the emulator for some much needed diversion, which is often, I think of him. RIP sir. *** In terms of this "review", nothing has changed from before: just some hapless, clueless, even older old guy offering up some ill-informed waffle about some ancient old fruit machine that most people will have forgotten about, even if they'd known what it was in the first place (back in 1985). I remind myself: this machine (briefly) appeared in pubs, arcades (and in my own case, a chip shop) back in 1985 or thereabouts, fully 40 years ago. Crickey. Well, we old crusties know all about MPU3 machines, right? Played 'em back in the day, lost our shirts, made a few quid. The memories stayed with us; we all have the layouts and the lucky few even have the actual machines. In many ways, this was the golden age of the 10p AWP (and 2p-ers as well), all a very far cry from now. That we get to play these old classics (and thus they live on) is down to MFME and its author of course, but also to the layout creators - Vecs in this instance (and a very fine layout it is too, which is to be expected from him of course), as well as the play testers, the resource gatherers, the owners of these rare beasts who allow ancient ROMS to be dumped and all the rest. *** Unlike ubiquitous MPU3 machines like Line Up, Adders & Ladders, Hyper Viper, Exchanges Unlimited, Razzle Dazzle etc., this was a rare machine - I only ever saw one in the wild. If there's a "TL;DR" summary (getting down with the kids there 😉), I daresay I'm reminded of those old "naughty but nice" adverts for cream cakes (if you're a certain age, as you probably are if you've got this far, you'll remember stuff like this: There are plenty of others with the likes of Les Dawson, Larry Grayson, Kenneth Williams etc., a real 1970s Carry On fest. Thing is though, I don't know about you guys, but I've always thought cream cakes look and sound like a great idea, but as soon as you start eating them, you kind of regret it? They're a bit much - too rich, rather bland and too much of them. A cream eclair has oodles of piped cream, chocolate and choux pastry, a pretty awesome list of ingredients you'd think, but it's all rather sickly and disappointing, a classic case of being less than the sum of its parts, right? In a similar vein, Naughty but Nice surely has the most appealing, finest ingredients - it's a Barcrest MPU3 machine for starters (a late one at that, bearing many resemblances to the great MPU3 Big Shot, with a bit of MPU3 Big Game thrown in, and even a pinch of MPU4 Stake Up/Multiplay clubber, albeit without the benefit of that machine's more advanced light and sound show, thanks to the more advanced MPU4 hardware). And yet - it's all rather disappointing when you play it. Allow me to elaborate. A Barcrest sussed out very early on in the genre of MPU3 machines (AWP and clubber also) that an exchange path is necessary to "jazz up" small wins, beyond simply a cash gamble ladder. A 20p win on Line Up or Hyper Viper is exciting (even a 10p win in HV's case) because it can be exchanged for 2 nudges, with the promise of much higher prizes and/or an exciting nudge gamble. Of course, many such exchanges/attempts ended in failure, with the player stiffed with 10p, but that's the gamble. Naughty but Nice has no exchanges - and boy, does it miss/need them. Another staple was a feature board of some kind (Line Up, Adders, HV, Autoroute, Razzle, Fortune Numbers etc.). Those few machines that didn't have one, like Circle Skill and Bigshot still had multi-word fill features (Cash, Zapp, Nudges, target board etc.), and Big Shot had a fully implemented nudge exchange - all plenty enough to keep the player entertained. Naughty but Nice does away with most of this as well; there's no feature board and there are only two trails to win stuff from numbers - the rarely given "Naughties" (a rather lame super series along similar lines to Fortune Numbers, although it can credit repeat if its really in the mood, perhaps for £3 or £4 tops) and nudges. A unique twist is that, when playing for super series (Naughties), the win values are all cash (£1.50JP for 10p play), with the lower wins enhanced. However, given that you won't ever have any nudges (by definition), you'll be relying on wins simply dropping in off holds or whatever (or the stingy super series). At least half the time, the nudge feature will give the minimum 2 nudges (and it'll be obvious the machine is wanting/expecting the player to collect, as they'll almost invariably be a lame 2-nudge reel set up with 30p/40p/60p win in range). Any unused nudges off the initial nudge feature (but not subsequent if nudges held over) will mean the player has a double or nothing chance next game. This could've introduced a fair amount of playability (e.g. like Big Shot), but it doesn't really work in practice. You can gamble, say, 2 nudges up to 4 or 6, then manually nudge a 20p win (instead of taking a 40p or 60p best win), leaving 3 or 4 nudges unused for next game. Often, though, the machine will stiff you with a Lose, or even if it gives it, the best win will still be 60p odd. Above all, this machine is tight as a duck's arse - Makes Nudges Unlimited look like JPM Rollercoaster on £6JP lol. Er, and that's it. Either naff super series (which the machine will endlessly number taunt you forever for, unless you're guaranteed it by having a hold and enough numbers on the win line to reach 10), or nudges - probably 2 nudges at that. At least it's a lot more willing to give the nudge feature. In terms of the Double or Nothing gamble, this is very reminiscent of Big Shot. Like that machine, it's progressive; you'll lose 20p wins if gambled if it's in a bad mood, but start pumping in those pound coins and you'll start to get to 40p, then 80p then £1.60 more often. At £1.60, bank 20p and go for the £1.40 double to £3JP. When it's good and ready, it'll go up (and clam right up again, in all likelihood). The machine is too easy to read, too tight, too simplistic. It's not a complete woffer by any means, but it clearly lacks both the depth and charm of many of its MPU3 contempories (not to mention classic JPMs of the era, most notably Reel Crazy). There is one thing that really marks it out from other similar 'Crests, though - Unlimited Nudges allows an autonudge for £3, albeit it doesn't have that wonderful "whirring" sound (I always loved that... <UNLIMITED NUDGES> in the alpha... <BELLS OR B A R S> 😀) It's an impressive looking beast; those two big win tables alternating lamps - there really wasn't anything else like it AWP-wise. Barcrest produced so many good looking machines. This one's a bit of a dumb blonde though, sadly, and you wouldn't take it home to meet your mother. (They didn't last long and there was never a 2p play variant. Presumably, most ended up as rebuilds like Chase the Ace, Win a Gain, Rat Race etc.). WWC JUDGEMENT - SAINT OR SINNER *** PURGATORY 5/10 👼

I personally liked them a lot,autoroute and naughty the first machines after the dreary roulette wheel gamble machines of razzle etc,they didn’t last long because of the EM5 mech,never understood why barcrest and jpm with superbank,tumble,top up,top streak went for this mech over the mars,basically you could use steel form A M12 washers in the EM5 for pounds and the summer of 85 onwards they got absolutely blitzkrieged by them….so they say😆.

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

Hello I can finally read the messages. Thanks to Generation.😉 So here it is, I have two 1980 French Version Ambassadors. It doesn't distribute winnings. No money. Everything happens on the meter display. Equipped with the MPU3. Well, it doesn't work completely. 🙄 If anyone needs the schematics or the eprom files, I have them. I think I also have the eprom files for the MPU2. I'll check. Thanks Sorry for my poor english. Translate by google

Unbelievable 😂👍.great capture