I was able to get my SPH DA120 working after it was bricked with the help from this forum... thank you all.
But if you are not able to get it fixed here is a company that Pioneer Support gave me. They do have a replacement card for $72.40. I would trust this more then the eBay sellers. It also looks like they have a great supply of repair parts too.
PacParts, Inc. 1860 W. Carson St. Suite 102 Torrance, CA 90501 Phone: 800-421-5080 Fax: 800-782-5747 Web: www.pacparts.com Hours of Operation: Mon-Fri 8:00AM - 5:00PM PST. Will-Call 9:00AM - 5:00PM PST. Saturday 10:00AM - 3:00PM PST.