Is Any Table Tennis Serve That Hits the Net and Goes Over the Net a Let Serve?

Question: Is Any Table Tennis Serve That Hits the Net and Goes Over the Net a Let Serve?

Answer: Hi Jimmy, the quick answer to your question is nope, it's a fault. It's only a let if it hits the net and then hits the other side of the table as well. According to the Laws of Table Tennis - Section 2.9:
2.9 A Let
2.9.1 The rally shall be a let
2.9.1.1 if in service the ball, in passing over or around the net assembly, touches it, provided the service is otherwise good or the ball is obstructed by the receiver or his partner;

For the service to be otherwise good, it must comply with all the other requirements for a good service, including Law 2.6.3:
2.6.3 As the ball is falling the server shall strike it so that it touches first his court and then, after passing over or around the net assembly, touches directly the receiver's court; in doubles, the ball shall touch successively the right half court of server and receiver.

So as you can see, if the serve hits the net, it must then touch the receiver's court in order to be a let. If it misses the receiver's court, it is a point for the receiver.

Good luck in the tournament!