Guitar pickup type, not piezo Owner never realised his reverb was broken as 2 of the 3 springs remained connected. So I will leave as is but with the loose one removed. So I didn't take it apart to replace. Anyone familiar with the anchor points, I'm just curious? They look like small soft iron rods somehow soldered to plastic surrounds - so I left alone. It was the 2mm or so diameter iron that had snapped about where it passes through the laminated iron surround of the pickup.
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on