I need advice on how to balance the tonearm of a Beogram 1800, type 5811.
Two problems. First, the arm is not floppy unless the turntable is spinning. Second, when the counterweight unscrewed fully, it hits the case but doesn’t raise the stylus end.
Can you advise on the correct procedure to achieve balance?
The arm should be in the recording playing mode and then the weight should be adjusted to zero tracking force. Then you rotate the numeric dial without moving the weight so that zero is a 12 o’clock. At that point you rotate the entire weight to the desired tracking force.
You don’t need to cut the mains. Simply carefully pick up the arm once it has moved to the record and move it back supporting it on any item that is high enough to keep the stylus from touching the top. You can also take the platter off and with the 45 adapter depressed press play and it will move over and lower.
Assuming the arm is truly lowered, then the weight should not be hitting the rear at zero grams as applying 1 gram is only 1/2 turn of the weight.
Your suggestion for releasing the arm worked fine.
However the counterweight still hits the cover at the back before balance is achieved. With the counter weight just clear of the back, the arm rests on the record but so lightly that the anti-skate stops the arm going in. I simply added 1g (half a turn) and am now using it on that setting.