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Showing content with the highest reputation since 02/19/24 in all areas

  1. A massive thanks to Ed off here for taking a look at the rom program code to unblock the gamble on this great old mpu3 clubber .the three single bars dropped in on reeld 1,2&4 and it held so obviously I held them and the fourth bar dropped in .couldn't believe it but was over joyed .here is a clip of that jackpot .it stopped paying £6 short due to the tube sensor .
    9 points
  2. They are holding up very well thanks being switched on 14 hours a day. There is now in full working order Line Up Frog Hop Adders and Ladders High Lights Exchange Unlimited Fire Cracker All working fine on new coins and getting reasonably used. Cash or Nudge not in the line yet but is fully working with a slight lamp fault Not about making money just good to see them for play and many people love them just for the memories they brought to them when they were younger
    7 points
  3. Another one that caused an inordinate amount of head scratching. Usual symptoms of no boot due to rotten components. All the really bad stuff was swapped out until the board booted and ran OK on the test rig. On return all was not well and came back with No Boot again? Back on the test rig all was good so all the rest of the chips were swapped out around the battery area just in case. Back it goes and guess what, it comes back again as No Boot? Sometimes you think there must be a easier way to enjoy your hobby. I had to get to the bottom of this but couldn't see any reason why it would work in the workshop but not in the machine. Sometimes these boards can go conductive and need a serious clean on the top surface. The slightest bit of humidity in the atmosphere can make all the difference between it working or not. I sometimes recommend just a quick blast with a hairdrier around the battery area just in case. Back at the ranch... So after a good few hours on and off with this one and the previous one I was getting pretty fed up. Then something magical happened, it wouldn't boot. For most folks that would be a disaster but for me it was what I'd been waiting for. Being careful not to disturb anything I evenually discovered that D24 wasn't connected to IC3(6) anymore! There was a microscopic break on the top pad of D24 underneath the etch resist. The copper had been eaten away under the etch resist but looked good from the top. The bad bit is just below where the marking for R77 is, you can hopefully see where I've scraped the etch resist. Anyway a patch wire was fitted and it all burst back into life. Let's hope it doesn't come back again.
    6 points
  4. Well there you go,do apologise for me emptying them that night and pissing the money up on Pernod and black.
    6 points
  5. Float down the Nile and search the pyramids, Will you raid the tomb for its treasure or be cursed and lose the lot!! Thanks goto @hitthesix for the previous classic layout @infection - images Now onto the layout itself, this layout has a few minor problems. Firstly like the Classic layout beforehand, the Main LCD screen in the centre isn't Emulatable Atm so a fair bit of info won't show as in Let Em spin, hi lo reel is lit, and find my treasures!! also some features rely on the text so its guess work on our part!! For the main "find my treasures" the logo will flash. Finally the Start / Collect button should spin the reels and collect the bank, but couldn't workout how to make a dual functioning button, so to get around this the Collect button is underneath. you can drag the button off-screen and press "C" to collect winnings.. if anybody knows how to make it dual buttons let us know via a topic? Shortcuts are as standard Start = Spacebar Collect = Cancel = ` Holds = 1,2,3 Exchange = E £1 = 0, 20p token = 9 Enjoy and Happy Gaming!!! Secrets Golden Nile £6 Dx.zip
    5 points
  6. Got this today while at work as I was near.it has been damp at some point as some pannels have swelled,may need to replace them not been inside yet as needs drilling. Need to see if it's worth saving.come with lots of coins too.like to know your thoughts ron.
    5 points
  7. Well there I was this morning, swimming trunks on ready to jump in the Thames and all because of a System One board that was driving me nuts....... This one started with being stuck in reset, pretty much standard fare for these Ace boards. All rotten components swapped out and board running OK, at least as far as my test rig was telling me. I could play games on it and all switches and outputs appeared to function correctly. So back it went and to cut to the nitty gritty there were still reported problems. The main one was when it booted the reels were slow and the lamps dim? Not seen that one before and it was difficult to see it on the test rig not having any reels. So on the third return things started to get worse, it would still boot OK credits could be clocked up but the START button did nothing? Even during the game's test function it wouldn't recognise the START button? After a few days of head scratching and basically getting nowhere the sound went off! You couldn't make it up. By this time all the small logic chips around the battery area had been replaced, mainly out of desperation but of course the fault persisted. I'm now thinking I'm getting too old for all this stuff and I've lost my touch but before I jump in the Thames I thought a fresh head on a new day might be a good idea. OK, thinking cap on, hang on tight as it gets a bit techy from here on. I thought I'd take some readings on a good board to compare so starting with the lamps and then the reel pulses I saw that they were approx half speed?? OK, that explains why the reels run slow and the lamps are dim but why?????? Next step was to discover what was holding up either the bus or the interrupts. This is where my understanding gets a little hazy but I know from the docs that if IC12 sends a pulse out on pin7 (74LS138) then it can prevent NMI from occuring which controls the reels and multiplexer (lamps). Checking pin7 and there was a constant pulse. My notes state that in normal running there shouldn't be one so this is looking promising. What on earth is happening though to cause it? Another day gone and still no resolution so off to bed. Now most people count sheep jumping over gates but I see circuit boards and logic gates. Anyway in my dreams a voice said surely it has to be an input, perhaps a stuck gate on one of the input chips? Previously I'd already swapped out two of them trying to track down the reel sensors and the START switch and also IC37 (8255) thinking that might be it. Nope! So this is where we came in, trunks on and ready to walk down to the river. Before I go had I missed anything? That's when the old lightbulb lit up and I got all excited again. There is another input albeit it's not mentioned in the docs and also it appears on the diagram in the outputs section!! This is the DATA IN which goes to pin 13 on IC24, under normal running it should be HIGH but it was stuck LOW. It's fed via a 220K resistor and clamped HIGH by a 1K resistor to the 5v rail. On the DATA IN side it was indeed HIGH but LOW on the chip. I've no idea what caused that as I doubt whether anyone has a DATA pack connected. So it was out with the 8255 and in with a new one and checking the pulse back on IC12 pin 7 it came on for a second after starting to boot then went off. Whoopeee!! Reels now definitely running a lot faster and the lamps also brighter, what do you know the START button now works too. Definitely one for the Midibob notebook. Hmm, still no sound so it's out with the AY-3-8910 and in with a Yamaha YM2149 and bingo sound restored. Trouble is it's my only spare and prices on Ebay are ridiculous. If anyone wants to sell me some I might bite your arm off as long as they aren't Chinese of course, the chips not the seller. I think I deserve a few glasses of vino tonight.
    3 points
  8. Thank you to all for helping with Top Tenner. It seems to be working ok now. My husband has added a video of it in action. Take care Ann.
    3 points
  9. Anyone that wants to know the full story I made the video I was also part of obtaining permission and I was there when they were removed, I got 4 myself.. I'm happy to tell the full story to put to bed some of the rumours.. Looks to be a bit of jealously ffrom 1 or 2 unfortunately.. The main thing is some were saved❤️
    2 points
  10. Hi all, Currently I am digging into the schematics of the JPM SYS80 CPU board. I do have quite some experience in 70's , 80's microprocessors, concepts , memory mapping, bank switching but the TMS9980 is new to me. Looking at the SYS80 memory decoding I cant get my head around how it works (can be the age as well 😉). This is a memory map I found of the SYS80 CPU boards (the 14K is not in it but I can guess that one). So the 16K addressing space makes sense here : Looking at the schematics of the 6K , 8K, 12K memory decoding I see the use of a few 74LS138's. Here the 6K, 8K and 12K memory decoding logic. So far so good but what I don't understand, for instance with the 6K board (but same question for other boards) is how you can decode the 2nd EPROM , on address $0400 , which is from A13-A0 -> XX00 0000 0100 0000 by just using BA0 to BA3 which are the lowest 16 addresses ?? Anyone who knows this and is willing to explain ? Kind regards, Bram
    2 points
  11. Apparently got “permission” from The owner, and done so instantly it’d seem….🙄
    2 points
  12. 2 points
  13. Ha ha no way a very rare sight indeed !! well done 👍🏻 very very clever
    2 points
  14. I love the pcb tracks! work of art in themselves!
    2 points
  15. Here is the mpu.shame the wood has swelled.but it's good inside and solid.mpu was tested June 1985.
    2 points
  16. The issue you have seen with the coins being accepted, and routed correctly, but not giving credit is a common Scorpion 2 fault, I have seen it on lots of boards, it's a faulty PAL chip - in red below Paul
    2 points
  17. https://www.facebook.com/share/p/w1vEZKcEzLWqzWuP/ In case you haven't seen it
    1 point
  18. Thanks guys for taking the time, as always it's appreciated.
    1 point
  19. More Barcrest Token goodness in the form of the iconic Cash Counter the true skill players game This is probably the third, forth or maybe fifth time i've made this, originally made the "other" version back in 2013/14 then this "alternative" cab version which at the time was a mini 1024wdx using the real lit machine images instead of just photoshop so its more authentic to the real machine in lighting techniques. i longed to make it for mfme6/-20, but lost the starter images a long time ago. Fast Forward to 2024 and along comes @johnparker007 with the original mini art upscaled which he's done a brilliant job with so here it is the final/final edition from me (unless the other cabinet real images come to light lol) A super Large edition!!!! Enjoy and Happy Gaming all over again Cash Counter (Final) Alternative Cabinet Upscaled Dx.zip
    1 point
  20. Great to see some true classics on offer to play .
    1 point
  21. Permission was obtained and the machines were saved, A few were ransacked for parts beforehand though so will be useless without ROMs which is a real pity!
    1 point
  22. Yep Cash or Nudge Maygay very sought after machine, along with the mk1 EWN, NDU Deluxe , Winbanker, 😞
    1 point
  23. That's not good! Some are for sure viable to restore but not if they get robbed! Would love that moon bug one, takes me back even tho it was shit compared to all the jpm and barcrest stuff lol
    1 point
  24. For me it’s not about the potential to win or any financial gain, it’s to connect with memories and nostalgia with playing these in the past. Not sure about the licensing or business model. Are the machines on old money and tokens? Is there an exception as they aren’t running legal tender and are they classed as amusements of some sort?
    1 point
  25. Will these not need to be moved with new law comes in, anyway? So they’ll have to be in an over 18 section, where you could have same amount of machines earning much more. unless whole venue is over 18, I don’t see the point of installing aging machines with temperamental hardware; that take ages to earn more than £5🤷🏻‍♂️ not a dig, just trying to understand why. yeah, nostalgia etc etc etc - but from a business POV is what I’m asking. In an under 18 area, surely you’re going to get 98% of people who won’t appreciate them. With that comes risk of coins rammed in from young kids, buttons smacked etc. with working boards commanding £200+ on eBay, running them 12? Hours a day seems madness. interested in your reply. Again, not trying to be an arse.
    1 point
  26. One fuse for lights had blown,so replaced.plugged in,it lights up,gives credits,when I press play it kind of worked but mainly first reel stops,middle reel is irrattic and keeps stop starting as if solenoid not engaging properly and third reel keeps spinning.it has operated payout solenoid but it also lockedc2p solenoid in while reels were spinning. So not right but trying. Hold and cancel work.
    1 point
  27. I never thought I'd see the day! Thank you very much. Gonna spin this up now
    1 point
  28. Look like a bit of scorching on one of the roms .get them dumped as well .anychance of some good pics of the inside and outside si ?
    1 point
  29. Thank you for the fantastic layout.
    1 point
  30. Pretty sure this one was early 80s Simon. 2p play, 5 games 10p and incorporated the later 50p for games and 40p change mech.. MPU controlled but Carfield had moved from direct drive reel motor, the bulb, lens and optic through the reel drums to a belt drive motor and wipers on this model. Although it seems the wipers were not used for long as they probably found out the reverse nudge with wipers is not the best idea so adapted to reel sensors on Frenzy. The MPU was bespoke to Carfield but whether they built it themselves or by order I can't be sure but usually mounted under the reel shelf so, Apart from the power supply there was a vast cavern of space in the bottom of the cabinet. Hopefully not too many problems to save it and the MPU is still operational, Possibly may need a reel strip to clean the wipers and studs as they needed to make just as good a contact as on electro machines but descent looking machine and they do look good with those big buttons.
    1 point
  31. Can’t be THE Sydney Devine surely.
    1 point
  32. Great stuff, thanks a lot for this mate!
    1 point
  33. I've come across an MPU3 ROM card marked as "Druid 5p 1.50", anyone remember this one? Will dump when I get the opportunity.
    1 point
  34. An amazing coincidence - I got the ROM card from the operator who owned those machines at Keats!!
    1 point
  35. I bet the seller said..... 'it just needs a fuse'
    1 point
  36. I found this MAME site which has loads of ROMs https://www.planetemu.net/roms/mame-roms
    1 point
  37. Here seems ok for roms. https://www.emuparadise.me/
    1 point
  38. If you like old school 80's layouts, I am starting to add some of my layouts to my new site (https://fruitmachine.org) on the Emulation page.
    1 point
  39. Just had a board in from a Match it machine that was listed as dead and on test it just sat there looking at me. First thing to check is the 5v and this was spot on. Next point of call is the main clock which wasn't running. Most times if not all is the 9602 (8602) chip that's failed. These are also used in the MPU3 but for a different purpose. These are getting very scarce these days, which I've mentioned before, and the prices on Ebay are ridiculous. Once replaced the board burst into life and ran all the diags and played games OK. After a good soak test it was time to pack it up and send it back. Back in the users machine all was not good. There were problems with payouts and the Match it feature didn't work. Not too long after the board died again. Most faults I've come across with payouts are due to the reel sensor backplane board but the main worry was the board being dead again. This time the board came back with the backplane and the sensors. Back on the bench with the board again I quickly discovered that although it looked like everything was ticking over ie all address and data busses were running there was no enables going to the PIO chips. IC7 (74LS02) had failed, you couldn't make it up! Because of this I decided to swap out all the small TTL chips just in case. They all tested OK but I didn't want to get bitten with another failure. Moving on to the backplane there were two outputs not being switched and this was due to the CD4049. All sensors appeared to be OK using my sensor tester so it was time to return. A longer soak test was carried out and all looked good. I had to do some detective work on the slingshot mech to get a good understanding of how it functioned and to work out how I could check the payouts on my test rig. Once I was happy back it went. Back in the machine it was functioning again but wouldn't run the Match it feature on reel 1. Also the Gamble feature never did what it said on the reel? Lots of head scratching then began to try and diagnose what was occuring and why. The first thing that became apparent was the lamp on the reel backplane interface board wasn't lighting up and this was due to one of its legs was broken. This never left the machine as it's bolted to the reel deck. That would explain the Gamble reel. Next conumdrum was the Match it issue. From the symptoms shown on various videos I assumed it had to be something to do with reel 1 not being sensed correctly. Lots of avenues were tried to no avail and I was running out of ideas. One other possible reason was the green interface cable between the deck and MPU. Sometimes you get dry solder joints on the plug (socket). This was checked and continuity tested but all looked good. Photos were sent over and no solder rings were able to be seen although it is very difficult to see them sometimes in pics. A breakthrough came at 04:00 this morning when the owner checked the continuity again and found that two connections, although showing good between the pins at each end, had no connection to their pads! A quick job with the iron and the Match it feature was back on. To say I was relieved was an understatement and the owner was ecstatic. Well you would be wouldn't you.
    1 point
  40. Have got my husband to do the Action Pack video i promised everyone. Here is the link. Thank you if you take a look. Ann
    1 point
  41. Yeah... there are voltage regulators used (ZN404) which drop out of tolerance when cold. It's a silver coloured small cylinder on top of the processor card and one on the main board. They also suffer from age (think I repaired your cpu card years ago-i would have fitted a new one). I'd watch the artwork on your monopoly 60 aswell in an outbuilding. That particular machine really suffers from peeling artwork
    1 point
  42. Updated the new romset with the code to remove the gamble limit. At this time the jackpot tune will play and auto collect at more than £100 on the roulette wheel. Original version: Changes made: At this time there is no code to reduce the pot back to £100 when the gamble win is higher. This is due to limited space for additional code. Next step is to try the new roms in a machine. The new rom set is attached. CCH120_STD_MOD.zip
    1 point
  43. Sometimes I think it must just be me and I'm being punished for a misdemeanour in an earlier life.
    1 point
  44. Hey all. I thought it was time for a long overdue update on this. I've been busy with work and family so have been limited with time to work on it. After looking at all the IC's under the microscope, pretty much all were showing some serious corrosion on the legs, along with some of the caps too. I eneded up replacing all caps and socketing all the IC's on the motherboard. The only ones i didn't replace were the RAM and the CPU itself. I also replaced all the transistors for the three motors and numerous ones for the lights as well, along with sorting out the sound issues by replacing the trimmer pot that controls it. After doing all that, i still had a problem with the Number 2 stepper motor binding up! Luckily i managed to find a replacement on ebay though, fitted it and it all worked ok. As you can see I still have a few lights to sort out, along with some cosmetic repairs to the cabinet. Annoying the stepper motor for reel 1 has now started to bind up in a similar way to the one I replaced on reel 2! The chances of finding another replacement being fairly low, I decided to strip the one that I had removed previously. I know a lot of people say they shouldn't be opened as they are difficult to assemble again, but I've managed to get it open and stripped it down pretty easily. I removed both the front and rear bearings and soaked them overnight in some oil in the hope that some of it would get inside. Unfortunately they seem pretty well sealed, and any effect is only very short-term. However I've managed to source some new ones, so as soon as they turn up i will fit them and rebuild the motor. I'll film it as I go and will post a video up here of it.
    1 point
  45. Because when power rails on the board fail or get noise CMOS components are very fragile. They need very stable voltage levels on vcc and gnd or they will break. Common thing to happen is latch up, this is where pins are driven on an IC that has no power supply, it causes the internal transistors of the IC to fail. On top of that, battery damage to a maygay is usually widesrpead because the traces are thin to begin with , very easily corroded through.
    1 point
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