So your machine is a stern and the video is a Williams. Also what game are we talking about? Pin tech did change from a NC EOS which breaks the circuit on the pull in coil to a NO EOS which modulates the voltage to the coil to prevent it from burning out.

Typically flipper coils that only use 2 lugs are Normally Open so the mpu knows when to start the modulation. You'll want to verify this by supplying the machine name so other owners can chime in.

Did you compare the left EOS with the right? Do they look the same? On some machines the EOS is closed when the flipper is at rest and on others it is open. Not sure what yours should be.

your manual tells you that your flipper EOS switch is a 180-5149-00 - you search that, you find it's a normally closed switch. That means it should be closed and making contact until the flipper hits the End of stroke position, where it then opens.

So when you are in the diagnostics, the dedicated switch for flipper EOS should appear 'made' until you manually move the flipper and it should open in the last 1/8" or so of travel.

I think you are reading the diagnostics wrong... one mode will show you the current switch states, one will show you the LAST switch hit.

Note Stern also had a period of time with SAM games where their transistors they used for the flippers sucked, and holding a flipper for an extended period would blow the transistor.. even when EoS was fine. The fix is using a more robust transistor. This started around AC/DC era. I don't recall transformers being particularlly susceptible to this.. but TF was right before AC/DC

Although I've never actually seen official confirmation of this from Stern, the general understanding seems to be that your game should work fine (and not blow fuses or transistors) even if the EOS was completely removed from the game. I know this is how WPC and Data East games work from experience; they don't need the EOS to work to function safely. WPC even gives an error message if it notices the EOS is malfunctioning, but will ignore it to keep the game going, and I can't imagine Stern games don't, although at the moment I don't have any Stern games to test on.

depends on the flipper and driver design...

Stern's are single wound, pulse modulated flippers. So the CPU controls high vs low power using pulsing. Without the EoS, it doesn't know when to goto low power. I don't know if stern has software compensation for that or not.

I wouldn't worry unless it happens again with the new parts.

It happened to me & the local barcade on a MET pro. I was cradling the ball bullshitting with the manager of the place & smoked a transistor. Damn, and I was having a good game too.