Putting my Sinbad back together, I am checking coils and connections with my DMM.
I used a Flipper rebuild kit from Marco on all four flippers, including brand new A-17875 coils.
As I check the resistance, the two flippers on the RIGHT side give me an expected reading of 2.9 ohms (Sinbad has four; two on each side). All good!
However, when I check the resistance on the LEFT side flippers, the Ohm reading for these coils is 10.2! Yikes!
So I’m confused! Why would the coils on the left side have a resistance more than three times the right side set of flippers?
Clearly, something is wrong.
Note that the entire playfield is disconnected from all boards (power supply/driver board) and there are no connections to any power at all.
The only thing that I know might suspect, is that when I was reattaching these flippers, my older disassembly photos seemed to indicate that one of the EOS switch wires was going to an outer lug instead of the center lug, so I made the swap to match the connection of my photos of the original (pre-rebuild) flipper connections (I.e. the “top” wire on the EOS was on an outer lug, and the “bottom” wire on the EOS went to the center lug: these were swapped to match my photo).
As I Google the internet looking for some ideas (and not really knowing exactly what to look for in a wiring diagram) I thought I would ask here to see if anyone might know what could cause such a high and inconsistent ohm reading for brand new coils.
Thanks in advance!