A test record can be expensive to find but the correct way to go.
In the mean time, open the DIN plug and check the solder joints inside. Especially the ground connections.

Martin

Thanks. I opened the DIN plug and the connections looked OK - no sign of solder splashes or flux. I re-soldered anyway but it made no difference. I also tried with/without the ground wire on the DIN shell. I ran a separate ground wire between turntable and amp but no change either.

I will be getting an old B&O system to play with in the next few days so that may assist fault isolation. Don't know which model yet. 

So now I also have a Beocentre 7000 with working turntable and good sound on S-45 speakers to continue the faultfinding. The cassette deck is not working but I'll look into that later. My plan is to rig a connection from the 3000 DIN plug into the phono preamp board input on the 7000 so that I can verify that the 3000 and its MMC4 are OK. I'll post the results when that's done.  

If you have already replaced the caps, take a good look at the resistors.

I recently had a BM1600 come in for repair, where I had to replace all the resistors in the signal path. All of the resistors were out of spec by at least 10%, and a couple were out by 80%. That was after I'd already replaced all the caps.

Those old carbon resistors do not hold their stability as the years go on.

I used Vishay Dale CMF55 and CMF60 to replace them.

Menahem

Problem solved! I rigged a  temporary cable from the Beocentre 7000 cartridge output to the DIN phono input on the BM2200 and got good sound on both channels confirming the 2200 was OK. I then traced the problem on the 3000 to a dry joint on the signal cable ground connection at the small pcb inside the turntable.

So in summary, my problem was a poor phono signal from the 3000 turntable but it was definitely worthwhile replacing the caps in the BM2200 since I found one cracked and another leaking.

Grateful thanks to all for your help.

PS The Beocentre 7000 I have recently acquired has a problem with the tape drive and also the tone arm returning but not lifting off the record when pressing STOP. I will open a separate post for this once I have cleaned the unit up and made some checks.

Thanks again. 

Hi Pete

Tape deck issues will usually be:

No tape playback - broken belts, see member Dillen (named Martin) for replacement belt kit.

No fast forward but okay rewind and playback - this means the jockey wheel which controls fast forward has sized, it needs relubricating.

I recently fixed both issues on my BC5000, see my post here for details:

Thanks Andrew

Careful cleaning and a tiny amount of sewing machine oil fixed both tape drive and turntable. Everything works fine now.

By the way, does anyone know what the sticky material is that is used on the plastic linkage to damp the top cover movement on the BM2200?

Yes, it's kilopoise grease. (The prefix kilo- here suggesting a very low grade of viscosity).
Don't use automotive grease, most types will attack the (oil-rich) plastic !

Martin