Thank-you for insight on pins I will do that.
The BM was not warm to the touch in any area after 15 minutes of use (connected to magnapan loudspeakers) with the weak sound being the same with testing using my laptop headdphone out to a 3.5 mm to 5 pin din adapter I bought off eBay.
I connected to Phono 1, Phono 2, and Tape input. All threee play the music, all three played at same weak, distorted sound.
I should note, that I have one wire not connected to anything up near the Bass slider. 30 years ago my stereo indicator lamp went out and it is pulled up out of its cubby hole with the thought that I could find a replacement lamp someday to fix it and it looks like the loose wire may have connected to the lamp, although it already has two wires connected (one is white with black stripe, and other is black) so this is a solid grey wire that is long enough to terminate to the lamp or somewhere in that area.
I can take a pic and post if needed.
Than-you for quick response. I have business prospects visiting on Saturday and my desire is to have my BM, TT and speakers going in my offic when I welcome them. I will take a picture of my "retro" setup when I finish this. It includes eames furniture, a 2 new 2 inch wool shag rug, and B&O cabinet (all pieces re-finished rosewood).