It can be considered normal for a valve radio to hum a bit during warm-up but then it's supposed to fade out, allowing programme sound through. Not here. The hum only increased, accompanied by slight crackle and it remained at the same level regardless of the position of the volume control. No programme sound could be heard anywhere on the dial

Up with the variac again, monitoring the amp-meter... - nothing ! In came the voltmeter, showing that the voltage reached- and passed the fuse now and the high voltage (HT) was present at the main smoothing cap and filter caps but the valve heaters didn't glow. The heaters are all in series and the ohm-meter showed that all heaters had good continuity

I wanted to keep the appearance fairly close to the original, also inside so the fuse holder needed to be repaired rather than replaced. A newer part was found with holding clamps looking exactly like the original so these clamps were transferred to the remains of the old holder and a new fuse was mounted. Much better.

Before powering up a valve radio for the first time after standing unused for years it's always a good idea to do some initial checks to insure that nothing drastic is about to happen. This is a matter of personal safety and also a matter of insuring that no components are becoming damaged, possibly totalling the radio. A few initial checks and

Regarding the safety, everything with valves always bears a risk of personal injury if poked the wrong places. This radio is no exception. There are two leads in the mains flex and after the mains switch one goes directly to the metal chassis so the chassis can potentially be the bearer of live mains. Furthermore, voltages greater than that of the mains

Little marks of the passing years and daily use is fine in my opinion, it's part of the radio's history and this particular unit is in great shape, obviously loved and cared for from the first day and 46 years have passed leaving only a couple of minor chips to the veneer at the sides, all the way back at the rear edge, nothing major and the

Some call them valves, in the US they are named tubes but since this is a UK site I will go with the english and stay with valves. The valve line-up brings no surprises; UCC85 / UCH81 / UBF89 / UABC80 / UL84 and "magic eye" UM84. The rectifier is of the metal-type and the radio is built on the early pertinax type PCB boards. One large board

A quite extensive tone control was available with two combinable filter positions for bass and the same for treble plus the extra settings for "Speech" (Tale), "Music" and both together "Orchestra". An input for a grammophone (GR) is present and a similar plug at the back is for an optional external speaker.

The Jet Present 607 has FM but also a quite extensive AM coverage with both FM and AM antennas readily built-in, both very good. The FM antenna is a dipol made of alu foil glued to the inside cabinet with soldered wires running out the back to two plugs allowing the use of either the built-in FM antenna or an external. The AM antenna is in the form

In this thread I will try to document and tell about the repair and restoration of a vintage Bang & Olufsen radio, namely the JET Present 607. Built in late 1960 for the 1961 season model range, the JET Present 607 is somewhat large but still categorized as a mid-sized table radio with several good features and a superb build- and sound quality