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What a cracking workbench that is Craig, 4 x Beograms laid out ready to be sorted and back to playing nicely again 🙂
This is what I got from AI on google – “When a Beogram 8002 tonearm fails to drop on a record, it usually stems from a mechanical jam in the arm lowering assembly, a worn-out tangential drive belt, or an electronic fault preventing the lowering solenoid from triggering.
The 8002 tangential tracking system uses an opto-electronic sensor mechanism to detect the record edge and determine when to drop the stylus. To troubleshoot and fix the issue, check these key areas:
Check the Solenoid & Electronics: The arm lowering mechanism is activated by an electronic solenoid. First, ensure a cartridge is correctly installed and the tracking force is set. If the arm moves over but refuses to drop, the solenoid might be stuck or the electronic control circuit (and its associated capacitors) may have failed.
Inspect the Tonearm Drive Belt: The linear-tracking arm relies on a rubber drive belt to pull it across the record. If this belt is stretched, slipping, or has turned into sticky goo, the arm assembly cannot pull itself into the correct position to drop.
The tonearm lift bar must be resting freely in the “V-channel” of the vertical adjustment screw. If the turntable was recently moved, the tonearm assembly can shift and cause the lift bar to stick to the side of the V-channel instead of dropping. Additionally, the tonearm must remain perfectly parallel to the stationary sensor arm (a gap of exactly 7.7 mm)