Not clear from your post....

Does the coil even attempt to move? If no, could be several reasons.

In switch test, are the three drop targets all making their switches?

With game on, push the three targets down. Lift PF, and briefly short the target reset coil lug with the non-banded diode on it to a convenient ground (braid in bottom of cabinet), using a piece of spare wire. Does the coil reset the targets?

my ES drops were also doing this. the coil sleeve i put in was too short causing the plunger to slightly bind when in the down position i installed a longer sleeve (the correct size 03-7066-4) and no more problems.

Is the metal reset plate intact? Mine was cracked when I got my pinbot.

$5 part.

I had this issue with my Pinbot, and if you've done a google search you will probably find dozens of cases of this symptom and no single common solution.

My symptoms were the same as yours, I think. The coil felt weak. It could reset a partial bank, but if all 3 were down, it'd just pulse. I pulled the drop targets apart and cleaned them all up on mine, since that seemed to be the most common cause. It didn't cure the issue.

It was a bit intermittent on my machine, and I was struggling a bit understanding how the System 11 coil relay system works (I'm no electronics expert).

I ended up shotgunning the repair, which I hate doing but I don't have a lot of spare time to work on the machines. I replaced the relay under the playfield, replaced the coil and re-seated all the connectors and seem to have fixed it with one of those repairs.

I realize my reply isn't much help, but I'd like to follow the your repair progress to see what your solution is.

I would check the sleeve, the coil stop, and the diode first. I'd also make sure the correct strength coil is installed.

What is there to oil on that assembly???

There isn't enough metal to metal contact anywhere on it that would cause very much friction if it looks anything like the system 9 target banks...

I know, it's a very old thread but does someone have any development with this issue??? I have the same problem with my Pinbot!! Like all of you I completely disassembled the target assembly to clean it, installed a new sleeve with new coil, resolded a lot of pins on the driver board.... New driver and pre-driver have been installed and still the same problem!!!!

now I have joined the club of drop target bank sufferers! I took everything apart and cleaned it/replaced the sleeve but to no avail. Next I am going to try a longer sleeve since it seems like a bind and mine had the shorter sleeve in it. Will report back soon!

Confirmed. The longer coil sleeve prevents binding. 100% fixed!

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