Any flaky opto or connector pins on the interrputer board ?

LTG

Try playing a game on it with the galss off. When the time is right hit the trunk with your hand simulating a ball hit.

If it stops then concentrate on the trunk stuff, if not then the eddy sensor is causing it.

LTG : )

Auto eddy board from Pinbits is nice but pricy.Exaust all other possibilities,and if you can't get her going try one of these.....but it's not a guarantee.

How can the eddy board cause the trunk to stop?

I don't think it's actually the eddy sensor,I think it's in the software ....but....a flaky eddy sensor can cause a bad read and contribute to the stop/freeze problem homeboy is having.Scott

Take apart and clean and lube the gear box.

I had random trunk errors and in my case the trunk gearbox was filled with old grease that was like molasses. I cleaned and re- lubed it and no more errors. My trunk rotates twice as fast as before.

Info in this thread-

http://tinyurl.com/crjang2

Wrap the led indicator on the eddy board for the trunk in electrical tape, but so you can see the top of the LED, but light does not emit from the sides.

This LED, when the eddy detects a hit, flashes, indicating a switch hit. The LED is used for calibrating the pot, but in play, this LED actually emits enough light to set off the opto in the trunk. You hit the trunk while it's turning, the opto inside the trunk gets fooled thinking a ball is somewhere it shouldn't be, as a further switch does not get activated, as there is no ball in there, and the software instructs it to halt.

I had issues with tuning my trunk eddy board and strange behavior was observed with the trunk spinning too much or reversing motor direction. I got tired of tuning the board before playing each time so I bought the pinbit board. Yes it is a little more than replacing the original but -- for me -- it fixed my trunk issues and was worth it.

The other thing I did before replacing the board was disassemble the plastic housing (below playfield) where the optos are located (lots of plastic dust, good grief!). Gave it a good cleaning and checked the alignment. It helped a little, but the board seems to have been my real issue.

Anytime - absolutely anytime you have an opto board out, especially a hard to reach one such as the one side of the trunk, always replace the optos, or at the very least reflow the opto bulb leads. These are always prone to cracks, and in any game can cause intermittency issues.

The problem is now solved, see here:

https://pinside.com/pinball/forum/topic/tom-trunk-error-leons-fix-anyone-done-this