25
Troubleshooting
The Halcro dm78 and dm88 contain no user
serviceable parts. Please do not attempt to
open the unit as this will void the warranty and
will expose you to dangerous voltages.
For all service requirements please contact
your dealer, or Halcro at
Symptom
Remedy
No sound or light
Ensure mains cable is plugged in to the amplifier.
Ensure the mains cable is plugged into a working wall socket.
Ensure the Master Switch is ON.
Check fuse.
Red light is on / no sound
Press the Standby / ON switch to ON.
Green light is on,
No sound
Ensure Input Selector switch is set to the correct input.
Ensure loudspeaker cables are correctly connected (both ends).
Ensure the Input cables are correctly connected (both ends).
Check preamplifier is on and correctly connected.
Check for a signal from the preamplifier (with headphones if
available).
Check audio source is on and correctly connected.
Check for a signal from the audio source (with headphones if
available).
Try a different audio source.
If none of the above rectifies the problem please contact your dealer.