https://pinside.com/pinball/forum/topic/f14-tomcat-owners-club-fans-also-welcome
Post in here as well. Lots of great info in that thread. I would not think your connectors are subject but is possible. Take them off and look for corrosion then reinstall if they look good. Re seating them some times helps. Doing this with the game off. It could also be, that some of the connectors need re flowed at the circuit board.

I'd suspect the power supply, possibly the capacitors. Test voltages at all the test points on boards.

"Use a DMM to test the DC outputs. Set DMM to DC 200 volts and stick black lead under the ground braid and use the red lead for testing."

I've put red boxes around the test points. Test point 1(TP1) is in the top box, and test points 2-4 are in the bottom box. The orange box has the two connectors to leave connected. I'm not sure which fuse is which, but you may have a fuse chart in the head that will show you which fuses are F2, F3, and F4.

MRudowsky posted this on my F-14 resto thread! Is deff helpful and a easy check!!

pasted_image (resized).png

TP1 5.062V
TP3 14.60V
TP4 -14.94V
Fuse 2 42.49V both sides
Fuse 3 19.66V both sides
Fuse 4 42.46V both sides
J5 Pin 3 -103.5
J5 Pin 4 104.6
J5 pin 6 5.062V
This is what your voltages should be around.

if your voltage is good you may want to check the 6802's on the mpu and reseat them. One of them my be acting up or going bad. i had one go bad last week and it was doing as sorts of weird things until i replaced it. luckily i had another system 11 board to swap the chip out to test.