The seller, located in japan and who works as a camera refurbisher with good reviews and all that, told me I can ship it back and they will have it repaired for free and then sent back to me for free, which I will take them up on. They also said they will test it with film inside, and offered a 100% refund if I want that instead. I'm gonna go for it and, if it doesn't work when I get it back, will obviously return it for a complete refund. Thanks everyone.