I have a blanket with a very similar brd. Measure the resistors. I don’t remember the values, but mine were still good and the same value. The problem is the white axial device between them. It is a thermal fuse that opens on over-temp. Measure it, open if bad. Replace it with the same temp for safety. Then, don’t use the blanket over level 2 and it shouldn’t fail again. I went thru this 3x and it’s still working for me. Level 2 is warm enough. My blanket has 4 setting levels.