I have had the same issue and it is so frustrating. There is a point where there could be a burner leaking gas since we don't know if it is completely off or not because we have no fricken knobs. This is a huge concern! Where can you get the buttons from? Sorry we lost the manual and I am desperate at this point.
Try Ebay. There are knobs on there for $16.00 up to $36.00 and higher. I have 5 broken knobs on mine too, but won't buy from Samsung ever again. Too bad, I really like the stove otherwise, love the convection oven!
Come on Samsung just admit you screwed up.
I am having the same issue. I just spoke with Samsung and they say its just a cosmetic item and i need to part with over $300 for 5 Broken nobs. I am on the call with the State of Texas filing and complaint and reporting the deceptive and substandard products sold by Samsung.
I HAVE ALSO FILED A CONSUMER REPORT FOR UNSAFE AND DANGEROUS PRODUCT.
HERE IS THE REPORT NUMBER <20180220-B95D7-2147392770>