Thanks for the replies guys! I'll check the areas you pointed out and tell how the BM reacted.

I've found out what was causing the problems in the left/right channels. It was the balance potentiometer i had repaired earlier. I hadn't had pinched the potentiometer assembly back together tight enough, so there was some loose movement in it.

Does anyone have a picture of a wall mounting bracket for a BM 1900? I'd like to place the BM to my livingroom wall, but i'm not sure how to do it yet... I was thinkg i'd hang the BM directly to the wall so it would hang exactly vertical. But i've understood the brackets (atleast for a BM 4500) will position the BM slightly canted. If i hang the BM vertical will the lid stay slightly open all the time?

There's no bracket.
The Beomaster 1900 (and 2400) is already prepared for wallmounting so
you just need two screws in the wall.

Martin

Great to hear! Thanks!