N
N_Cook
- Jan 1, 1970
- 0
In for switch replacement but owner says he has , sometime back , got a
shock off the mains lead by touching the earth pin when just unplugged from
the mains.
I told him probably static discharge rather than anything to do with mains ,
but explored , just in case.
The large conventional type mains transformer is mounted on a metal plate
that is held to the wood of the casing by 4 bolts. There is no earth strap ,
or ever has been , to this plate or transformer frame, so not earthed. The 4
bolts are exposed through casing on base of the amp. Hum issue if earth
strap put in place ?
shock off the mains lead by touching the earth pin when just unplugged from
the mains.
I told him probably static discharge rather than anything to do with mains ,
but explored , just in case.
The large conventional type mains transformer is mounted on a metal plate
that is held to the wood of the casing by 4 bolts. There is no earth strap ,
or ever has been , to this plate or transformer frame, so not earthed. The 4
bolts are exposed through casing on base of the amp. Hum issue if earth
strap put in place ?