Product review (5 stars): Microwave is like new again!
This worked perfectly.  My Samsung over the range microwave stopped heating a while back.  I did some research (Youtube) and found out it was either the diode or the magnetron.  So, I took a chance and ordered this.  It was a little hard to replace, but once I did - BOOM, it works!

I am not super handy, so don't be afraid - just take your time, watch a few videos on replacing diodes and save yourself a ton of money for a service call or new microwave