My 1st post here so here goes.
My iPad recently stopped charging when I plugged into the port. I found a workaround by powering off completely then plugging the port cable in. I phoned the repair people who said I needed a new port to be fitted at great expense so I lived with the problem.
I then bought an iJam to play with Garage Band and the iPad would not recognise the device which worked great on my iPhone.
I found a knowledgable repair guy yesterday who said he has seen about 50 iPad 1's with similar problems. He opened the iPad and removed the 2 screws holding down the connector to the main board at the other end of the port cable and the problem was fixed. Reassembled using a new clip kit to close the iPad as the plastic bits break when you open it up.
He said there is a design fault on early iPads that cause static to build up at these 2 screws which messes the port upand later iPads did not get them fitted. The connector cannot come out as it is pretty well clamped in place by the tight space inside so the 2 screws are not really needed.
The upshot is that my iPad was fixed for about $30 in 20 mins instead of upwards of $100 and a few weeks waiting for parts that others had quoted me. And my iJam and Garage Band work great now!
Hope this helps some others with similar port problems.