maybe? troubleshooting
Dryer will not turn off
If your dryer's panel stays on after a cycle finishes, or the drum light stays on even after you turn off the dryer, this is normal. What's not normal is if the drum won't stop spinning or the panel won't turn off when you press Power. This guide goes into more detail about how the dryer turns off.
samsung.com/us/support/troubleshooting/TSG01001990

found in solutions area
source:
samsung.com/us/support/owners/product/electric-dryers-dv42h5200