Toshiba laptop power problem

H brought in a laptop, a Toshiba Satellite M35X, with the power problem and solution as given at laptoprepairguy.com - he had done all the homework. Using the beautiful disassembly guide from irisvista.comKR opened it up with occasional help from me and did the job. On putting it back, it did not show any display. In the evening, came back and checked again, while it was charging all the while - turning the speakers on with the switch provided, heard error beeps - 1 short, 3 short, 3 short, 1 short. Was it the Phoenix BIOS motherboard bad signal 1-3-3 ?! No - I suspected the RAM. Removed it - a single 512 MB DDR, the same signal. Replaced it in the other slot, no beeps! Put it back in the first, this time seated it properly at 30 degree angle and more inside, slid in without any problem, now booted fine. But the soldering or the power jack still has problems, jiggling the power plug makes and breaks the contact. Maybe he can live with it, or maybe he wants to use the external jack method.