Bang&Olufsen audio: Typical B&O Beomaster 7000 (reciever/amplifier) issues?

I’m about to be given a Bang&Olufsen Beosystem 7000. Includes Beocord (audio cassette deck), Beogram CD (compact disc deck), Beolab Penta III speakers and Master Control Panel 5500 (tabletop remote).

Everything works great except the Beomaster will not start, no click. No standby light I think.

Is there a common problem I can figure as the most likely issue?

Repair or replace?

I’m aware this is a long shot here, but why not?

Thanks in advance.

Posted in Social, banter welcome.

Like new Beolab Penta III’s. I KNOW. OMG!