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MAGIK

Mecca Supporters 2022
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MAGIK last won the day on January 4

MAGIK had the most liked content!

About MAGIK

  • Birthday 07/08/1978

Contact Methods

  • MSN
    pedster2008@live.com

Profile Information

  • Gender
    Male
  • Location
    Holytown, North Lanarkshire
  • Interests
    Anything alternate, retro, against the grain, Im not a go with the status quo guy!

FME Most Wanted

  • FME Most Wanted #1
    Rattler
  • FME Most Wanted #2
    Masterspy
  • FME Most Wanted #3
    The ritz
  • FME Most Wanted #4
    The MPU5 line up

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MAGIK's Achievements

Old Fruity Maestro

Old Fruity Maestro (19/19)

256

Reputation

  1. Self taught and I have blown a lot up along the way, and still learning every day!
  2. Anyway we could try it in the emulator ? a 2716, or a 2732 with the code burned to it twice should do the trick. Wont know for sure tho till we try it in a physical machine.
  3. underneath the shelf where the reels are. You will see a long grey box with about 4 sets of plugs going into it.
  4. CPU card is shot. Battery corrosion probably. Your gonna need to open the cage and photo it. Power it off first.
  5. Check this out. This might go to help if you have a MPU that wont boot and you cant find the issue. Sometimes you can find hidden shorts on these things... So I thought I would put a little repair log on here for you lads. MPU4 MOD2, fails to boot, owner cant find the issue. So at first I coudn't find the issue either. No dead pins on CPU or RAM, sometimes CPU starting sometimes not, not stuck in reset, no interrupts stuck low. I was a little surprised at the IRQs stuck HI at first because that crystal card I am using is a total git (they are multilayered things and the pads fail) and more often or not it locks up with the IRQs low. So a little investigation started, first thing was to find out if there was a read /write or enable issue. Ram voltage was fine, a little low at 4.6v , Output enable , pin 20 on the 6116 all pulsing away nicely, but pin 18 was stuck hi. Weird thinks me because the 138 at IC16 is pulsing away, and as far as I could see I had a good working address bus (well I thought I had). Then I smelled something burning. And then I saw something burning. C37 became a roman candle. Switched off and checked nothing shorted on my "everything" power supply . No apparent cause for the blowup. The cap had blown open , schemys show its just a bypass cap at the 5v line input so just left it alone and powered back up. Nothing else went bang so continued on. Checking up at the 138 a little further I noticed that pin 1 never went low. Which was odd because it was address line A8 it was tied to. Checked at the CPU, noticed it was always HI as well. Pulled the game card, it was still HI. Didnt think I would get a buzz, but checked for a short between pin 1 at the 138 at 5v. BEEP! Cut it and short was still there. Next target looked like the 541 tied to those address lines from the CPU, so removed that, short was still there. A8 on the CPU socket was dead shorted to 5v. How? It didnt make a great deal of sense because all A8 tied to directly was that 541. And that was no longer there. Its when I turned the board over, and used the zoom on the phone ( the cameras on these things make the digital cameras of old look like fischer price toys!!) that I spotted the teeniest of breaks in the trace pushed over onto the track for 5v. You can see on the video how its happened the two traces run next to each other and its very easy to short them if the solder mask is worn or flaky. So fixed the short , replaced the 138 and 541, reinstalled working CPU and RAM and fired up. Nothing else smelling bad, nothing else smoking, after fiddling with the PAL chip as usual on the program card to get good contact IRQs started running and I had boot. But no alpha. It was definetly working and display should have been up because IC3 and 8 were being selected and it was trying to do something with the reel outputs. Checking the pins for the alpha display on IC3 and 8 (cant remember the numbers off hand) Showed that everything was stuck low. followed the outputs down to the display pins, and saw the three zener diodes on the clock, data and display lines looked burnt. Cut them out, and pin 39 on IC3 ( alpha data out) started running. So replaced the diodes, and voila! Got "CASH METER FAULT" flashing away at me. Easy bypass , clip lead across the top and bottom leg of T11 . Then a quick bit of trickery with a clip lead on the reel photo pins and it was in attract. Hope you liked the video, got more repair logs coming up in the near future, I decided Id put them up here, and although I havent got all too technical on this one, I will try to be more accurate with pin and IC numbers and locations next time. Hope you all had a good christmas and new year!
  6. Summit coin Pull a winner, its a pseudo one arm bandit, its actually electronic, based on summits 8035 control cage. Battery on the CPU card in the cage wreacks havoc on everything else in the cage, so I would switch off, open the machine and fotograph the inside of the cage.
  7. Hi guys, while we were all being caged in I got on with a few things, this was one of them...... Not a remote control as such , but just a little something I came up with to make life easier. I shouldnt have used chinese parts tho one of the damn connectors broke already!!
  8. its not fruit machine stuff but I think this video gives you some of the best step by step PCB repair advice I have seen for a while, have a look , the guy has videod and described everything he is doing down to a nice fine detail and its nice and easy to follow, just pause between steps. Happy christmas and sorry I aint been around I have been busy with non computer stuff lately....Only just getting back into it.
  9. HMMMMM security device has me thinking cause it does a load of stuff with the PIA and 6850 before it hangs with these ROMs. I think Im going try this the other way round atm, Im gonna see if I can the black box CPU board Im fighting with to run golden shot ROMs because they do run in the emulator. Nice little outing for the needhams.
  10. Hi gents, Im after a bunch of fruit machines for a holiday location : Astra Celebration, Astra party time player Electrocoin Super Bar X Any project coin machines, Any Electrocoin casino cabs, Club climber barcrest, Any other MPU4s >>> Now, before you all start laughing your heads off, Im only after the DXs of the machines (had yous going there for a minute didnt I?) See Im away on holiday in a wee bit and its still under level 2 rules so stuffs gonna be shut and the seaside arcades are either closed or limited to redemption rubbish, so I thought I would take an arcade with me. I can only download a couple of files at a time from the fruit-emu, I did try and donate to them a while back but I never gained a supporters badge, so I thought I would ask here. Drop me anything youve got saved away, about 20 or so DXs will keep me occupied when Im not out walking to the harbour etc. Thanks in advance, if It helps I could drop some beer tokens for a USB stick to be sent to me etc. Speak later and thanks in advance again!
  11. Ok, so I will post more photos and vids in a few days. But I have noticed things that dont make a lot of sense. Its not to do with the ROMs. Theres a lot of chatter between our emulated CPU and the 6821 (address 1000h-1002h) while its hung up. Its looking for something on the lines because it counts down 1 every time address 004h goes to 0 and then the game engine goes active when it get to 0. I dont get attract mode, I think, because I am bypassing all of that by jumping it out of the loop to do with that 004h address. it also looks like it is trying to set lamps for gamble etc ( lots of calls to store stuff at addresses round 5000h) but they arent lighting up. I wonder if we have an unemulated auxillary board or something.
  12. Anyone fancy making one up for lil ol me? Im trying to progress with investigating superplay but its a bit annoying when I cant get any lamps to show up. Thanks in advance!
  13. So went one better and hunted down the instruction that sets 004a and changed the address it stores to from that to 0000. Ive changed that in the ROM and now the game will run right away so long as I set 000e to a value (its definetly the credits count) . However I still cant get sound to work or any lamps bar the buttons. Im not at all sure how you do it hehe.
  14. video of what Ive done.... https://youtu.be/HUm8vRArhDY
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