I've never repaired a 9130, but just looked online and found a few images... The Power switch wiring has plugs on it, simply unplug the unit, take the top off, Hold your new switch next to your old, remove and exchange the wiring from the old switch to the same position on the new switch. I can't see the mounting, but it can't be much... A couple of screws, replace the in reverse order. I bet you are more capable than you are giving yourself credit. Go for it, it'll be done before you know what happened.
