Thanks for the link. That part seems to have more solder points than the original jack, which has three. If necessary, can one bend the leads to fit the original solder points on the circuit board? Please remember that I know just enough to be dangerous...
Thanks again. This solution worked. I didn't change the phase of the speaker wires the first time I tried it. I still want to repair the jacks... it's too nice of a preamp not to. Any advice would be great!