[quote user="tournedos"] Excellent news! So, the preventive measure that nobody cared to speak out loud is to replace the coupling cap? My three Beolits with still intact speakers would be very interested. [/quote] Yes, mika, probably worth it for peace of mind, I used 1000uF / 16v on six so far which I iike to imagine helps the bass a bit

Have spent some time trying to fix these Seas speakers from Beolits with some limited success. As other posts suggest the voice coils jam inwards maybe due to faulty 470uF coupling capacitor. Inspired by Phil's post at (http://www.vintage-radio.net/forum/showthread.php?t=17620) I found they can be freed if you disconnect the speaker and apply 9

Many thanks Martin, your help saved another Beocord 3300 from the skip. I had the same problem with no sound and all level leds lit so replaced the three black caps (47uF and the two 220uF) and it works. Found one of the 220uF had gone short circuit. Rick

[quote user="Dillen"] Blue and yellow are datalink (only one of them actually used = pin 7). Black is probably signal ground. Protective ground is the cable's shielding. Martin [/quote] Having spend some time searching the posts to fix a severed cable on a BeoGram 3300 (not the CD) I found by looking at a BG5500 it's just the yellow