PS Audio Stellar M700 Instructions For Use Manual - page 10
4826 Sterling Drive, Boulder, CO 80301
Troubleshooting
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15-076-01-1
Rev A
Troubleshooting
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Owner’s Reference
Stellar S300 and M700 Amplifiers
VCR’s, surround processors, and any device that is connected to a television cable or satellite dish can
cause a loud buzz and should always be suspect. If, by the process of elimination described above,
you determine it is a component like a cable TV box that is causing the hum/buzz to occur, and using
a cheater plug doesn’t help matters, it may be necessary to isolate the cable connection (CATV) with
an isolation transformer. This inexpensive device is available at most department store type outlets and
is sometimes called a ‘matching transformer’. If you have problems finding one, call your local cable
TV company for advice. The matching transformer will be placed between the cable TV cord and the
cable box, TV or processor.
The system
has no bass
It may be
something
unrelated causing
the hum
7
Just remember, take the system down to its simplest level of connection. Find a way to hook the
system up with as many pieces of the system not connected as possible. Keep it simple and get it
to the point where the hum’s gone. Then start adding back components one at a time until the hum
returns.
Finding the problem is 9/10th of the work in finding a solution.
It may be that you have the polarity of the amplifier loudspeaker connection wrong on one channel.
When out of phase, polarity, will cause bass cancellation and should be avoided. Check to make sure
the red terminal on the Stellar goes to the red terminal on your loudspeaker.
Fuses
There are no user serviceable fuses in the Stellar S300 or M700 Amplifiers.