Did you ever hear the story about The Price is Right Plinko screw-up?

If you look at the Wiki article for Plinko you will see the following bit:

The Plinko board is often used by RTL Group-licensed lottery promotions, CBS affiliates, and UbiSoft to promote the show. For the promotions, two fishing lines (one on each side of the board, hanging from the side down towards the center slot) are used to "rig" the game, so the dropped chip would always land in the $10,000 slot. After a promotional advertisement for the video game was taped, the wires were mistakenly left in place for the July 22, 2008 1:00pm taping of The Price is Right. As a contestant was playing the game, three consecutive chips she dropped landed in the $10,000 slot. As the fourth chip was being dropped, co-producer Adam Sandler (not to be confused with the actor) realized that the wires were still in place and stopped the chip as it bounced down the board, informing Carey, the show's new host, of the situation. The wires were removed and the entire segment was re-shot for the show from the point where the contestant began dropping chips. CBS Standards and Practices allowed the contestant to keep the $30,000 won prior to the removal of the wires as well as the money won with the five chips she dropped after the mistake had been corrected. However, the segment that aired (when the show was broadcast on December 5, 2008) did not reference the mistake or the amount of money won prior to the removal of the wires.

While not having any direct influence on this situation, American game shows are regulated and governed by ethics panels because of a big dust-up in the 60s that involved shows cheating contestants out of winnings or some such things. It's a big deal when shows screw up. You can look up the history on it if you want.