No announcement yet.

Mp Chassis


Adsense Classic 1



  • Filter
  • Time
  • Show
Clear All
new posts

  • Mp Chassis

    In need of some help. I have two mp chassis that won't run on the machines. First one its in the chassis i've switched out the mp board, the 3 cube relays, and have checked all the wires in the c1 plug. When you put it on the machine won't turn on.
    The second one when you put it on the machine the backend starts but won't cycle, when you turn on the sweep you get a continuous sweep run, when you shut off the sweep and turn on the table you get a continuous table. Thanks for any help.

  • #2
    #1 Chassis check mask switch & plug, or Mgrs control Switch

    #2 Chassis try a working Bd.
    If at first you don't succeed, try, try, again. Then quit. There's no use being a damn fool about it." -W.C.Fields


    • #3
      Both problems are in the chassis not the mask plug or the mgrs control and I'm positive that it's not the board.


      • #4
        Check CB"s
        #1 BE relay (old style) can be pushed in with a pencil to turn BE on.
        #2 T4 glass coils
        T3 Mask/Scoring
        T2 Mgrs Control Circuit/Spot
        Last edited by felix; 05-31-2012, 02:20 PM.
        If at first you don't succeed, try, try, again. Then quit. There's no use being a damn fool about it." -W.C.Fields


        • #5
          After reading you post, several times, I figure these chassis are not "Known Working", and they were on the "Other Bench" attached to the "Healing Wall". Been there, done that.

          On both you could try a simple reset. This has worked for me many times.

          On the first chassis you might try tracing the wires inside the chassis to make sure one or more of them are not nicked and finding a ground. Had a couple of those.

          On the second chassis a reset might work, also I have used the ball stepper for a soft boot.

          Swapping boards with known working is always a good call, as is cleaning the contacts of the boards, including and especially the grounds.

          If you have the boards with the button batteries, change them! Those little buggers are a PITA sometimes.
          Necessity IS NOT the mother of invention. Laziness IS the mother of invention.


          Topic Starter RibbonScript


          Adsense Classic 2

          widgetinstance 666 (Related Topics) skipped due to lack of content & hide_module_if_empty option.

          MP Chassis Tester

          Good morning,
          I have built a tester for the MP Chassis for the 82-70 machines. Instead of using the cam switches
          I am using relays. My question is to anyone that may...

          Preventative Maintenance - As, Jets, A2s - LEDs

          Those of you looking for new LED lighting ideas may want to check out this site. Lots of stuff.


          4:1 Timing off..

          *sigh* Hello friends..

          I had a 4:1 go bad and I've never seen or done one before. Trying to search the depths of the forums, YouTube videos, it didn't seem too bad....

          Adapting the Bluffton end cap & terminal board kit to Franklin BE (and FE) motors.

          Left a rant about this in the bowling forum…

          I’ve already repaired a a number of Franklin FE motors using the Bluffton-style end cap and terminal board kit (090-004-582)....

          Turret clutch rebuild

          At what thickness do you replace the clutch face.
          Is there a minimum dimension from the clutch face to the rivet.


          Solderless relay conversion

          Is anyone running the solderless relays on the accelerators? How do you like them? What brand? How difficult to convert was it? Would love the feed back as I'm about to switch...