Caps should be replaced. Why?...it's from the 1970s and even if it was treated with kid gloves, it's time to change them. And if it was in storage, the caps may have dried out.
You can look for yourself; see if any caps are leaking or dry and brittle.
Also, it should be bench tested by a pro and set-up to spec. I'll wager you'll need a few other parts replaced or tweaked; eg: resisters, solder joints, power suppy. After that, you'll have years of enjoyable use.
You can look for yourself; see if any caps are leaking or dry and brittle.
Also, it should be bench tested by a pro and set-up to spec. I'll wager you'll need a few other parts replaced or tweaked; eg: resisters, solder joints, power suppy. After that, you'll have years of enjoyable use.