Jump to content

Andrew96_

Mecca Supporters 2019
  • Content Count

    2812
  • Donations

    5.00 GBP 
  • Joined

  • Last visited

  • Days Won

    94

Everything posted by Andrew96_

  1. Andrew96_

    Looking for some maygay epoch help please

    Easy enough to fix but the right desoldering tools are a must if you don’t want any board or track damage
  2. Well from time to time I get asked to fix boards, but as you all know it is time consuming and with a full time job it can take ages too! and of course people get 'upset' if you keep there board for ages! so someone suggested why not buy one off the bay and repair up and sell it to them!, thought naa M1 non working is gong for silly money at the moment, then I see this one £56 non working delivered, the underside was perfect with no rot and thought that one don't look so bad! so bought it, it arrived today bit green round the chips! first thing remove the battery, yep good old track damage under! and very green IC legs! 74 hc04 was next to come out, even with the leg looking so bad it came out really nicely with my pace desolderer at only 380 deg C, was impressed it did it so well, and the usual on M1B the chip legs are all clinched which makes them even worse to get out! was quite surprised as it looked so bad I thought it was bound to be faulty... but no!!!! chip will still go in the bin though! so spent a couple of hours tonight just desoldering the chips with the pace unit! board now looks like this!!! that's as far as I got tonight!
  3. Andrew96_

    Looking for some maygay epoch help please

    most likely the lamp board, they can be fixed but most don't bother this was a reel board, fiddly but can be done first row of bad chips! found a bad one! nope that did not cure it, second go at bad chips
  4. Andrew96_

    JPM System 80 repair advice

    can we see pic of the new cpu chips?
  5. Your need to buy a crimping tool, housing and pins, this is part of the thread on recrimping i did https://www.fruitemu.co.uk/ib/index.php?/topic/20015-maygay-m1ab-board-repair-thread/&page=3&tab=comments#comment-321191 sorry but after Sunday’s comments you made there is no way I want to help you, especially sending you my address!! Perhaps someone will!
  6. Andrew96_

    Stadium SEA1191/SA schematic diagram

    you will be very lucky to find one as one for these does not exist... well it does at Stadium but they won't release it! it is the type where the 12v HAS to be set to over 13v for it to stay running which then burns out the 12v fan inside causing it to overheat! If you set the 12v to 12v then the psu would keep cutting out or worse not even run! bellfruit never did fix that problem! If your very lucky you just might find some bad joints on the connector output pins to the pcb
  7. Andrew96_

    fruit machine

    proper old school crt monitors too
  8. Andrew96_

    fruit machine

    Well I used to buy non working neo geo boards with errors and repair them, so yep recognize them a bit! these are 2 I have working ( and about 6 more stored), not a very good pic but they were testing boards hence the 1943 monitor being on its side ( I could not be bothered to turn it) and the neo geo on the right running puzzle bobble
  9. Andrew96_

    crystal mpu4 board with a jpm rom [ update ]

    ah ok, there are many quirks to mpu4!
  10. Andrew96_

    crystal mpu4 board with a jpm rom [ update ]

    Ok, I am looking at this thread on my phone, so bear with me if you have already covered this... where did the roms come from that don’t work? Did you program them yourselves? And if so do the files fit the roms or are they for bigger capacity roms?
  11. Andrew96_

    MPU3 Lighting Tubes

    yeh T5, just measure whats there if they look the right length
  12. Andrew96_

    crystal mpu4 board with a jpm rom [ update ]

    Make sure the links on the card are set right for the correct eprom size
  13. Andrew96_

    MPU3 Lighting Tubes

    Aren’t they usually 12” 8w t8 tubes? White colour around 4000k
  14. Andrew96_

    Wanted: Scorpion 2 Power Wire Loom

    If you use mpu4 plugs make sure you use the red ones, the reason is other plugs use smaller cables so you risk damaging cores in the thicker cables your putting in! Or damaging the plug, And I am sure the other colour plugs are lesser current carrying capacity you can press the cables in with a screwdriver but beware as it is easy to poke through the cable insulation and cause damage that way! The correct tool is t shaped to push the cables in
  15. Andrew96_

    Crackpot/potluck

    Excellent work!!
  16. Andrew96_

    Tales from Midibobs workshop, Sys80

    If pad 1 has been torn off look closely to see if it was originally connected to pad 2, no way would it be floating and to me that seems the obvious thing to look into.. well I would!!!
  17. Andrew96_

    fruit machine

    yup
  18. Andrew96_

    BFM Cops N Robbers

    Stick a bit of see through red sticky back plastic over it, not ideal but has to be better until you can find something better
  19. Andrew96_

    fruit machine

    That’s just a fruit case with a snk neogeo board and psu put in it and extra fruit buttons added, not the best conversion I have ever seen!!!
  20. Andrew96_

    BFM Cops N Robbers

    I think the original was 12v xenon strobe, the type that you used to put on alarm boxes due to there low power consumption, like these, the blue one!
  21. Andrew96_

    Boards stored in bubble wrap good or bad ?

    You just don’t know when or how static damages chips, just standing holding a board your clothing can generate 200v or so, not good if that goes up a chip!! But at that voltage you won’t feel or hear a noise
  22. Andrew96_

    Crackpot/potluck

    Yes mpu3 chr is crackable, but not mpu4 unless someone know something more than I do! That’s how I understood it too
  23. Andrew96_

    Wanted: Scorpion 2 Power Wire Loom

    I now cannot give you any numbers on the plugs as mine where the small type, I did have a tool that pushed the larger wires into the same type of connector you have, but loaned it to someone that then ended all friendship, so lost the tool as never likely to get that back now, and so cannot give you any numbers from it, such is life!!
  24. Andrew96_

    Crackpot/potluck

    Ok so what about the lamp mapping table that's also in the mpu4 chr chip? how do you get round that so the lamps are in the right place?
  25. Andrew96_

    A quick MPU2 Question

    How do the connectors look, It does not take much corrosion in them to create all sorts of reel troubles, I have just posted in a thread where someone wants a power loom and pics of the reel connectors to the motherboard! these stopped the boards booting up hence had to be replaced! been perfect since! worth a second look at the connectors perhaps?
×