Meridian Audio 501 - Manual (Page 43)

Setting up the Control Unit
39
Troubleshooting
This section describes problems you may encounter when using
the control unit, and includes suggested solutions.
If these suggestions fail to cure the problem, please contact
your Meridian dealer for further assistance.
No lights are displayed when
switching on
❍ Check that your AC power supply is connected correctly.
❍ Check that the ON OFF switch on the rear panel
is in the ON position.
❍ Check that the fuse on the control unit rear panel and the fuse
in the unit’s power plug have not blown; see To change the
mains fuse, page 41.
There is hum on the LP input
The LP input is the most sensitive input on the control unit.
❍ Check that the tone arm is connected to the technical ground
of the control unit.
❍ Check that the tone arm is connected to the power ground in
the turntable.
❍ If you are using a magnetic pickup, check that there is not
another piece of equipment too near to the turntable or the
left-hand side of the control unit. If so, re-position the
equipment to cure the problem.
There is hum on other inputs
❍ Check your other equipment.
❍ Consult your dealer.