There are at least 4 versions of the Beogram 4002; 5503 and 5504 are both AC motor versions. 5511 and 5521 are DC motor versions. Just adding to the confusion, I suppose ... Martin

And Peter likes Trolls for breakfast Martin

The stereo lamp and the lamps in the tapedeck are the same. The tuning lamps are of a different wattage. I have both types in stock. Regarding the muting of the speakers, it seems to depend on the version. Some mutes, others don't. Some have 1 pair of speaker outputs, others have two pairs, just like the Beomaster 901 receiver on which the Beocenter

It's possible to export the photos out of Acrobat Reader. Martin

Superb quiz ! Boy, there are some tough ones ... Martin

You can read the first couple of posts in this, yours initially, thread. What's written there goes for both the blue and black versions though the black version may go slightly higher due to its rarity. Or simply put it up for sale at Ebay, that will tell you what it's worth. Martin

I don't have the manual at hand but I seem to remember that the 680K is correct. Almost all multimeters have a diode-tester setting. This would be the best setting to use, though a standard ohm-meter could give a hint as well. Martin

Luc, As Peter suggests, capacitors can never be ruled out. They are known to cause the strangest faults. Your Beomaster 4400 goes into "safe mode" because one (or both) of the amplifiers no longer work symetrically. You could try without speakers (headphones alone) to rule out faults in the speakers and cables. If you didn't touch the

Yes, the Master 610 is what was later named Beomaster 900K, or at least a very similar build but I suggest that Beoguy confirms how much is present in his radio first, I am thinking about the stereo lamp and socket and last but not least the plug for the stereo decoder. It's a valve socket sitting on the main PCB towards the right, most likely a

Yes, they are placed at the inside upper rear edge of the rear plastic frame and are here to avoid wear to the plastic. If you look closely with good light, you will be able to spot the points where they once sat. One centered and one each end where the hinge pieces are. You can glue them in place, that will ease assembly. Martin