It happened on every TGIF show except for maybe "Hangin with Mr Cooper"
But, Full House, Family Matters, Step By Step all had it in 95% of the episodes.
Every time the episode got down towards the end and the "lesson" was being learned it was always the same sad music.
Example:
Carl: Edward, son....come here
(minor strings start playing lightly)
Edward: Ok, dad.
(Carl rambles on for a min, then....)
Carol: Son, your mother and I love you, more than anything (sad strings get really heavy) in the world....and we work hard to make sure we raised you in a safe environment.
Eddie:
(Carl rambles on a little more)
Eddie: You're right dad, I'm sorry. I know I was wrong now, I'm gonna make sure to stay away from those guys. (strings lightens up a bit, an few ascending acoustic guitar licks play)
Carl: Well Edward, no need to fret...tell you what next wknd you and I are gonna go fishing and have father/son bond time!
(entire orchestra of happiness starts playing as they fade to black)
Use the same scenario on Full House anytime Danny Tanner wanted to teach DJ/Stephanie a lesson. Or any "Step by Step" episode where they had a family sit down.