30 - 45 minutes
My son's Galaxy simply died. He put it on the charger in the evening and it would not come on the next morning. I checked the battery and found that it was dead. Replaced the battery and found that the new battery would not fully charge. The cheapest fix seemed to be the USB/charging circuit.
The parts arrived on time and I read over the guide and comments attached before starting. The repair went without a hitch, just step by step through the guide. It was a simple procedure, but it did not fix the problem - apparently the problem is in the motherboard. My son and I had agreed that $40 was all that we would invest in attempting to repair the phone.
Be sure you read through the guide completely and the attached comments. The comments were an encouragement offered some good advice as well