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ARCHIVED FORUM -- April 2007 to March 2012
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This is the first Archived Forum which was active between 17th April 2007 and
1st March February 2012
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Happy birthday, Keith ! I hope you have a great day, well deserved. Martin
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The size of the JET 606 is apprx. 60x38x28 cm so quite a large tabletop set. Can you think of a more appropriate radio to have at that time than a JET set ? Martin
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Note the fairly slim height of this chassis. The same chassis was available in a much lower cabinet with no built-in speaker as part of the then super modern building furniture series. The considerably lower cabinet volume in the building furniture series dictated the need for a capacitive dropper rather than the large ceramic resistor for adapting
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All knobs and buttons were then cleaned and the knob brights polished a bit. One knob, the tuning knob, had rusted to its spindle and its grub screw wouldn't budge. I gave it a drop of sewing machine oil and left it to soak in overnight. Next day the knob was easily losened and I can even reuse the grub screw. The knob itself had an old break that
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Thanks. That was one more fault found and cured. And I still haven't had any power to the set. Speaking of mains power, the dial lamps will be the first and clearest indicators of power when the set is switched on so I like them to work. Being in series with the valve heaters, they will also tell me if the heater chain is OK. The lamps measured
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A/S is short for Aktie-Selskab ( Share Company ). www.bang-olufsen.com Martin
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Welcome to Beoworld ! I am almost sure that Bang & Olufsen A/S would be the place to ask. Martin
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Thanks Anders, greatly appreciated ! This kind of fault is extremely rare. The tubular capacitor consist of a ceramic tube with silver coatings inside and outside with a lead connected to each coating. How on earth this can change into a resistor is beyond me but it has happened here. Now I know why the 22Kohm resistor got toasted. Ohms law used in
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Putting the ohmmeter across the capacitor gave a reading of apprx 600 ohms. Hmm... it has a 200 Ohm resistor to ground at the other end... that could easily add up to 800 ohms... One lead from the capacitor was lifted away from the circuit and the capacitor was measured again. Same result. 600 ohms across. That is wrong. Very wrong ! Out it came and