• We have upgaded to the latest version of XenForum and the process finished without any errors!!!! Enjoy the new forum!

Recent content by Allan

  1. A

    Hulk LE #93 Stolen from location

    That is why I don't operate machines ,I worked for a few operators here and there through the 80's,90's that kind of thing was not unheard of.
  2. A

    Dr. Who DMD Issue

    Those press in plugs are great for production but break down over time
  3. A

    System 80b help

    Not a fun board to work on RIOT chips allways seemed to run hot hopefuully its a 7404 or 7400 first inline and easier to change.
  4. A

    need someone to repair computer switching power supply

    Look for a 210 to 270K resistor that is open it feeds B+ to the driver IC on startup
  5. A

    STP22NE10L Replacement

    IRL is stronger the IRF has failed on me but is very common that is why I mentioned doubling them up ,IRFP250 is a monster but it will fit used once on a stubborn problem and still going a year later. Starburst sells P20N10 have had good results with it.
  6. A

    Flipper Coil Hot and Buzzing Gottlieb Sys80B

    The cabinet buttons need to be taken out and cleaned once in a while
  7. A

    Williams Fan Tas tic

    Mad scientist re-wire? sometimes in that situation you need to study an identical game.
  8. A

    Williams Space Mission Project

    I had one a little finiky ;fun to play
  9. A

    Bally Spottem

    O well if it was easy everybody would do it. You have to enjoy a good puzzle to work on this stuff,as for it's value its all what it is worth to someone
  10. A

    Gold wings no sound!

    You checked all the basics good thing I've seen too many replace a blown up board but they did not find out what blew up the first board
  11. A

    Gottlieb system 1 display problems

    Thing with Germanium diodes when they fail they tend to open rather than short so if you get some nasty coil voltage heading to the mpu they tend to open before they burn the board up. Pretty much any diode will work in its place the strobe rate is only 400 cycles per second but a rectifier will...
  12. A

    F14 Tomcat balls won't lock

    That is what I like a resolution; so many times I give advice and get no feedback,when all I want to hear is"did that fix it?"
  13. A

    STP22NE10L Replacement

    IRF540 is pretty common you can double them up for more current it gets a little crowded but it works. IRFP 250 works fit the centre lead thru the board the 2 outside solder on the top. Thing with mosfets is the gate current is barely a microamp the device turns on with a voltage so its very...
  14. A

    Gottleib EM startup problem

    AX ,R and U relays are trouble get a schematic from Steve Young pinball resource instruction manual has Operating instructions[startup] before you hack up the harness .Found 2 many torn up harnesses
  15. A

    Converter needed...

    Parallel to usb then usb to parallel? just buy a jamma harness and rewire it
See more
Top Bottom