There are a few things to consider. First off, assuming that your soldering/de-soldering skills are good, the circuit board arrangement is important to consider. What I mean here is that in some cases, circuit boards can be stacked, one on top of another in the chassis. If I were to see this, I would put the top back on and call it quits.......... If there is easy access to the components that need replacing, that is the best situation, since the circuit board may not have to be removed at all........ Using Alcohol to clean the pots and switches is Not a good idea. There are products made specifically for this. I am not against the 'idea' of blowing dust out of a component, but realize that the very dust being blown around can possibly enter the pots ans switches that you are concerned about in the first place.......... One thing that is so important, is to take accurate, in focus, and useful photos of every section of the circuit, and layout from different positions so that you will have a good reference to how everything should go back together............
I am sorry, but i don't have a suggestion for a reputable place to send this amp in S. Cal. Though it is a good idea not to ship any further than you have to, shipping to a QUALIFIED service center is of the utmost importance. Get references from those that know the difference. By this, ignore the folks who tell you that the people were nice on the phone, or were really fast, or cheap, etc. Hopefully, you get the picture.
I am sorry, but i don't have a suggestion for a reputable place to send this amp in S. Cal. Though it is a good idea not to ship any further than you have to, shipping to a QUALIFIED service center is of the utmost importance. Get references from those that know the difference. By this, ignore the folks who tell you that the people were nice on the phone, or were really fast, or cheap, etc. Hopefully, you get the picture.