Can you repair the All Day Health IF therapy device at a computer repair store?

No. Intermediate frequency therapy device belongs to the medical equipment, and computer repair does not belong to the same field. Most computer repair stores mainly deal with computer hardware and software failure, for medical equipment repair can not provide professional services. You can contact the manufacturer or distributor of the equipment, specialized after-sales service and repair department. The manufacturer has the relevant expertise and experience to provide proper repair and maintenance.