No sound when a check happens

Hi,
*while the game* I can't here anymore the sound when a check happens. *While the analysis* this bell can be heard. What happened?

yeah , i was about to make a topic about it. i use sounds -> ROBOT, all sounds work except the CHECK

I have the same problem. It doesn't say "check" anymore at all. I tested with the Robot sound package as well as the Standard sound package.