Anthony for Model Number LG LMV1680ST Hello. How can you tell visually, if a fuse, AP4440371 (LG #3B74133N), is blown or still good. Since the fuse is frosted, with a black stripe around it, the element inside cannot be seen. Thank you.
Answer Hello Anthony. I'm sorry to say that the only way to check a ceramic fuse is with a tester or by passing voltage through it to a known good circuit so you can see the circuit operate. Hope this was useful! Read More... Answered by AppliancePartsPros.com | Wednesday, February 29, 2012