Check and clean the the 2 contacts 1S1,1S2, at the same time clean and lubricate all mecanics, check Start/Stop on the front panel
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!!