At last I got time to pick up my Bay items from McAllen, Texas: 1 BM 2400, 1 BM 901, 2 Beovox S45 (81-83), 1 BG 5000 with MMC 4.
I could test the BM 2400 with BV 45s in McAllen, no foam rot, but a little greasy the foam, so change is needed, the BM no bass light, reception on Fm without antenna some few stations, with antenna a lot, and stereo light came on, sound OK. the 901 had a Danish power plug, so no test.
The BG 5000 was good packed with a lot of tape, so I left it like that, the MMC 4 looked OK.
Packed everything in buble plastick in my trunk and went back to Mexico city, 1100 KM with some bad potholes.
Arrived home I connected the BM 2400, the S45s and antenna, and got a lot of stations, but no stereo light, but as I have done my home work, I have a cap and bulb kit from Martin, the stereo light was left in a pot hole.
Put a new plug on the 901, connected the S45s and antenna, FM station, everything I get on my Beosound 3000 I get on the 901, but no stereo light, but all push buttons working, mono stereo works, connected the BG 5000, 
, Hanne Boels Dark Passion comes out with sounds I never heard before, cimbals, deep bass and good middle tones, my old BG 2404 with my old MMC4 had hum and odd noices, so I now I can walk on water.
Connected the BG 2404 with the MMC4 from the BG 5000, no hum no strange noices, just like the BG 5000, read and learn, buy a good MMC4 or a SMMC4, before you try to modify your cables or connections or try to repair your RIAAs, it a difference like day and night.
I will refoam the S45s, change the cap that Martin send me, change the caps and lamps in the BM 2400, change the belt in the BG 5000.
I will come back with pics and reports as I start with the repairs. I can walk on water, you may call me Jesus 
Soren Mexico
Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!