I recently bought a LaserCue, not working blowing the solenoid fuse. I found a drop target coil to be low ohms and replaced it (also replaced the drive transistor.) The issues seemed resolved an had played a good two dozen games over a couple of days. However today powering on the machine and starting the game the drop targets went wildly crazy. The previous bad coil locked on and the controlled lighting lamps were all out. I assume this maybe the reason the machine failed in the first place.
I went to dig into it, pulled the connector to keep the coil from locking on, tested the fuses, in the process of powering up and down after a couple times the controlled lights were all back working and the game worked as normal.
When in the failed state, if you plunged a ball it would tilt as soon as the spinner was hit from plunging the ball. Also the MPU appears and act like it boots normally in any cases.
The PS has been recapped, NV ram installed on MPU, and other refreshing but I am still wondering if it could be a bad power supply. Came up to pull the documentation to find out what voltages it should have (been along time since I have had sys7), but then decided to make this post while on the computer. The 40pin connector looks replaced as well.

Thoughts?

I figure I will look into that, but honestly it could be any switch hit causes a tilt. Didn't experiment enough when it was failed and it has remained OK since. The spinner is in the same row as playfield tilt.

Turns out it is the 40 pin connector, it was in a failed state when I just went to play, pressing on the board connect 40pin brought it back to life and working. Will check for cold solder and replace. Thanks