It sounds like you have two separate issues: first, the refrigerator is only dispensing crushed ice instead of cubed, and second, the ice maker has stopped working altogether, accompanied by a strange sound. I'll try to address both issues.
# Ice Dispenser Only Dispenses Crushed Ice: This issue is often due to a problem with the solenoid that switches between crushed and cubed ice. Over time, the solenoid can become frozen or jammed, resulting in it being stuck in one position. In your case, it seems like you were able to temporarily fix this problem by putting a spacer to keep it in the "up" position. However, if the solenoid is faulty, it may need to be replaced.
# Ice Maker Stops Making Ice: A few different issues could cause this problem. The water supply could be blocked or insufficient, the ice maker could be frozen or clogged, or there could be a problem with the ice maker assembly or control board.
The noise you're hearing could be related to the ice maker issue, perhaps something to do with the fan or the ice maker motor. The fact that the ice auger turns when you try to get ice suggests that the motor is functioning, at least in part.
You can try a few things to fix these issues:
* For the ice maker, you can try defrosting the fridge. Sometimes, ice can build up in the components and prevent it from working properly. Unplug the refrigerator and leave the doors open for a few hours to allow it to defrost, then plug it back in and see if the ice maker starts working again.
* You can also try resetting the ice maker. For many Samsung fridges, you can do this by holding down the "Ice Type" and "Child Lock" buttons at the same time for about five seconds until you hear a chime. Then wait for about 24 hours to see if it starts making ice again.
If this doesn't resolve your issue you may be covered under a service bulletin that has been issued by Samsung to repair a manufacturer defect with their ice makers. The service bulletin from Samsung guiding how to troubleshoot and fix this issue can be found here: https://www.classaction.org/media/samsung-service-bulletin-ice-maker.pdf