After I got the demounted radio for 1 buck I went to my small Steampunk Lab to take out the tubes and other useful parts. But I was too curious - I wanted to know if this radio is really broken. So I plugged it in and switched it on... The "Philips BCH 420 A
" hum very loud even before the vacuum tubes warmed up. A clear sign that the filter capacitor is over the edge and broken. I found an old one in my storage and replaced the part.
Yesss....the radio was running!!!!
So I cleaned out all the dust from the last 60 years and with the help of some "contact spray" even the switches and the potentiometers became like new.