Beomaster 3000-2: Reservoir Capacitor Replacement

A strong hum indicated poor interring of the 50Hz grid frequency. This immediately suggested that one or more of the reservoir caps of the Beomaster 3000-2 were in bad shape. This hypothesis immediately proved right after opening up the enclosure, which revealed that one of the three cans was leaking (see Fig.1; capacitor on the right). Replacement of all three capacitors solved the problem. The hum was gone, and the Beomaster seems to work much better. Fig.2 shows the three replacement capacitors. Since modern capacitors tend to be smaller than 1970s models, foam pads had to be used to secure them in place. 

Fig.1: Original reservoir capacitors. Note the leaking one on the right.

Fig.2: New reservoir capacitors installed. Due to a smaller package size, foam pads were used to hold them in place.