This is a problem that seems to afflict many respected turntable brands.
Like Gundam I also suspect static as a possible cause. Several years ago my supply started behaving erratically and, suspecting static, I routinely started discharging myself on the power block's external earth terminal before handling.
Another possibility is the emergence of tin whiskers since the widespread adoption of unleaded solder. Any item manufactured since 2001/2002 is at risk from this phenomenon. To manufacturers credit they've got the problem surprisingly under control - largely by avoidance of reactive materials and heat-stressing assemblies to purge the likelihood of any intermetallic effects.
It's a good argument in favour of buying classic amps that pre-date this period and reconditioning them (with leaded solder.... :)
Like Gundam I also suspect static as a possible cause. Several years ago my supply started behaving erratically and, suspecting static, I routinely started discharging myself on the power block's external earth terminal before handling.
Another possibility is the emergence of tin whiskers since the widespread adoption of unleaded solder. Any item manufactured since 2001/2002 is at risk from this phenomenon. To manufacturers credit they've got the problem surprisingly under control - largely by avoidance of reactive materials and heat-stressing assemblies to purge the likelihood of any intermetallic effects.
It's a good argument in favour of buying classic amps that pre-date this period and reconditioning them (with leaded solder.... :)