I was having trouble with my 998 not wanting to turn off. It didn't happen all the time and worked great otherwise but I called HB about sending it in. They said $370 service fee so I sold it to a friend with him fully aware of the issue. The service fee I saved and the sale price were just short of the cost of a new Helix 10. No brainer for me. With your unit dead, I would think you had no choice like I did.