I am working on my macbook pro and decide to charge my iphone. After plugging it in, the computer screen goes black and wont come back on. A visit to the Apple store reveals that it is possibly the main electronic board but I would have to come back in 2 days for an appointment to determine that. I found Carl through a friend and 2 days later my computer was up and running. I did not need a new motherboard. I could not believe how reasonable his price was and he gave me so much more info that benefitted me. Carl is my family’s IT guy now. Thank you Carl for incredible service with honesty and integrity!! You are the real deal!!