Re: TECH: How to check coils

cfh@xxxxxxxxxxx wrote: 
The EOS cap may not be needed. It depends on the coil.
They made the 11630 two ways - one series wound and
the other parallel wound. If it's an older series
wound (single diode), the EOS cap does *nothing*.
the EOS cap only supresses EOS switch spark on the
newer 2 diode parallel wound coils.

to measure one of the coil resistances the EOS switch
needs to be opened.

beaver wrote:

I have a never used 23-600/30/2600 here.  The main coil measures 6.6
Ohms, and the hold coil measures 125.5.

Before you chuck the coil, have you performed the usual EOS maintenence
steps?  Also, does the coil sleeve show signs of overheating?

Don't forget to add the EOS cap to lengthen switch life.

Edward Cheung

Thx everybody. My coils seem to have to right resistance. I did notice that the EOS switch is always open (one of the legs lost it's elasticity). I guess this explains the weak behaviour.
.

Relevant Pages

  • Re: Data East flipper problem
    ... opening up properly when the flipper coil plunger pulls in all the way. ... don't try checking the EOS adjustment by moving the flipper ... When the EOS switch opens up, it tells the PC board to turn off the high ...
    (rec.games.pinball)
  • Re: System 11 flipper problem
    ... Sounds like the "pull" winding of the coil is being energized even when the EOS has been opened, when only the "hold" winding should be energized. ... right flipper coil eventually heats up enough and blows fuse F5 on the aux power board. ... This may take several games, but I have gone through enough fuses to know it's still unresolved. ...
    (rec.games.pinball)
  • Re: Flipper blowing fuse
    ... repair by replacing the right flipper coil. ... EOS was adjusted incorrectly, was shorted, or that he had wired the ... had crossed one of the EOS wires and the orange wire from the flipper ...  EOS switch wire to center lug. ...
    (rec.games.pinball)
  • Re: uh, capacitors? (WMS Sys 11)
    ... coil, but did NOT add the capacitor! ... The new pawl barely touches the EOS switch. ...
    (rec.games.pinball)
  • Re: Tech: Calling All Electrical Experts - Flipper Issues
    ... energized and the hold coil is never added to it. ... then as the flipper goes up the pawl rotates and opens the EOS which puts the ... attached them to the pins on the flipper power board. ...
    (rec.games.pinball)