Your best direction ,would be the yellow pages.If you try pulling out the trunk card with the system powered up,you will cause more damage than you will save money, if it were only a station/jack problem you might be allright,but as you stated the manual is 797 pages, and at that they assume you have experience.The SX50 is not the one to start on green.Bosses tend to blow up if you blow up their system,That is too much for him to expect of you.