Cracked iPad screen? Don’t be a Sad Mac. The electronic experts at Firefly Electronics are troubleshooting specialists who can revive just about any busted tech product. Visit this spot in the Harbour Centre when you need help repairing a device, removing a virus, installing software or upgrading your gadgets. In addition to efficient and affordable repair services, you’ll also find a good selection of electronics in the retail section, including cables, adaptors, robotic toys, external hard drives and even spy tools.