The place seems to be called 14Laptop and their sign mentions the website. It's not the nicest website, but hey, maybe they know their stuff.
The other signs on the building say they fix smartphones, laptops, TVs and other devices.
Angie's List says they have been in business since 1975, but I don't remember seeing the spot before, though they're there in Google Street View pictures from 2011. If you've used it, let us know in the comments. I know my phone could use a few repairs.