Looks like leaf blade switches all over the bottom :

https://www.ipdb.org/showpic.pl?id=2723&picno=50400&zoom=1

Should be available or something else easily used. All kinds of leaf blade switches available. Worst case scenario you might have to make new screw holes if you need to adapt something.

LTG : )

Ball trough switches I wouldn't worry about. It could also be that the kickout coil is bad, or the transistor that controls it on the driver board is bad. Not a big problem either if you can do basic board work but not quite as easy as a ball trough switch.

If you could get it into switch and coil test you could find out for sure where the problem is

To further comment on what zacaj said, if a coil was replaced on this game it may have easily been replaced with the wrong coil.

Vector used a solenoid expander board to be able to add more coils than the driver board was capable of. The SEB is a tiny board under the playfield with a light bulb on it. If the bulb burns out, the coils controlled by the board will no longer work. Also, all coils controlled by the SEB require TWO diodes instead of the normal single diode coils used everywhere else. If one of these special coils was replaced with a normal one it would cause very strange game behavior and could even damage components on the driver board.

This can be difficult to troubleshoot because the symptoms can be very different than the problem that was just "fixed". If the owner doesn't understand how the SEB circuit works they will never figure out where the problem lies. And if they had to replace driver board components they won't understand why the same components keep going bad.

The outhole coil is one of the coils controlled by the SEB.

If you buy the game (I've owned both Vector and Firepower and FP is the better game by far, IMO), come back here and we'll help you fix it.

check there is 3 balls in the game, and make sure the 3rd ball is registering on the switch wire that protrudes out of the apron

This game does have unique trough switches that protrude out of the apron. I’m sure there are replacements out there, but I’ve never searched for them.

They're not the same that are used on fathom, elektra, etc?

Not sure. Never seen another game use them. Well flight 2000 has similar ones, but not the same as vector.

There are so many reasons to not buy Vector. Go with the Firepower.

Here is some trivia about Vector from my days in the Bally Lab,
Designed by my good friend Greg Kmiec, Vector was so packed with targets and features I coined the phrase, 'Vector Syndrome' to describe games with so many objects on the playfield there was physically no room for the ball to roll. Bally wanted to clear out the parts warehouse so the designers were given freedom to throw anything and everything they could think of on the playfield.
Enjoy!

It's a cool game, don't get me wrong, but the play is very herky-jerky due to the 'Vector Syndrome' as BigAl mentioned.

Vector can be a very challenging game, lots to shoot for, biggest problem I found were the flippers didn't have the strength it needed.
upgrade to Williams FT's and what a difference! Ball fly's!

Vector trough switches can be problematic if someone has been bending them every which way

If you get the game, ask here for some photos of how they are supposed to look.

Might want to inspect the Vector game. A person not that familiar with pinball may say "won't serve the ball up" when the game is completely dead and just the GI turns on.

What's he asking?

Do you own a meter?

New MPU board is good, but you could buy a working Vector for 1500

Can you post pics of how they are supposed to look so I can compare to my vector.

I'll say that fixing the switches costs $10 max

Rebuilding the other things like the flippers, and pop bumper another $100

This is true. I just sold one in KY for 1400

You should be able to get any parts you need for any of those machines, except maybe an MPU for Space Shuttle.

For Vector, put the game in self-test and run the coil test. Make sure all coils fire and they match the numbers listed in the manual. If some don't fire at all and others fire more than once, check the lamp on the SEB under the playfield to make sure it lights. If all the coils fire properly, then run the switch test with all balls removed and drop targets up. Manually press the trough switches and see if their switch numbers pop up on the display.

2 possible problems, the ball feed solenoid is bad or a bad trough switch. Either should be an inexpensive repair.