The power supply I use on my bench is from the old days. It can be used for either 12 volts or 6 volts. It also has an adjustment that affects the voltage. In those days they didn't have solid state regulators. Also the supply is not capable of putting out too much excess current. It has a voltmeter and amp meter on the panel. As one uses a piece of equipment they become familiar with how it performs and to me that makes quite comfortable.
I stand behind my advice to replace the wax paper capacitors and the electrolytic capacitors. From a circuit point of view, it is safe to power it up at that point. There are some other small value capacitors that don't generally cause the same problems. They can change value and cause some problems. Generally most resistors will change value over time. Most are not precision types and if the nominal readings in operation are demonstrated, there is no need to replace them.
As far as alignment goes, specifically the IF strip, I like to check the operation of the radio first. If there is good sound reproduction coming out of the radio and good selectivity, I do not adjust the IF alignment. That also depends on the model. I have a signal generator that will give me additional information. There are radios around that have IF coil or capacitor trimmers that will actually fail or break if one tries to move them. So you can end up with a radio that is scrap after observing that it worked rather well before.
