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Maintaining Your Parasound Amplifier
Your Parasound power amplifier requires no periodic maintenance and has no user serviceable parts
inside. To avoid the risk of electric shock, do not remove the top cover. The amplifier's exterior can
easily be cleaned with a soft cloth moistened only with a few drops of water or glass cleaner.
Main Power Fuse
There is an external fuse located within the AC receptacle that may blow as a result of an internal fault
condition. This fuse protects the unit from possible damage to internal parts. Never replace this fuse
with a fuse of higher value than installed from the factory. Substitution of a larger fuse may create
serious stress and damage to internal parts and will void your warranty.
In Case of Trouble
If you suspect a problem with your amplifier, first turn the amp off and check all your connections.
The trouble may be caused by another component or even a defective hookup cable. If you are hearing
hum out of any of your speakers, turn off the amplifier and disconnect the inputs to it. If the hum goes
away, it was probably be caused by your processor or one of the source components connected to it.
Frequently hum in home theater systems is caused by a grounding problem with the cable TV system.
Contact your cable provider if necessary to make sure the cable feed into your house is properly
grounded. There are cable isolation devices available such as the Video Link #634 or the Mondial
Magic specifically designed to cure this problem. In rack mounted systems, ground loops and hum can
sometimes develop via the metal rack rails of the equipment rack. This problem can be solved with
nylon shoulder washers available from Middle Atlantic Products (refer to rack mounting section of
this manual).
If All Else Fails...
Call your Parasound dealer or Parasound Technical Service. We can suggest other diagnostic tests you
can easily perform. If we determine that your amplifier should be returned to Parasound or an
Authorized Parasound Warranty Center for inspection and possible servicing, call Parasound for the
location of a warranty center near you. If you choose to send it to Parasound, contact us to obtain a
Return Authorization (RA) number. You will be asked to repack the unit in its original packaging
including the additional outer box for protection during transit. The Return Authorization number
must be clearly marked on the outer carton only. You should ship the unit by UPS with adequate
insurance and a copy of your purchase receipt to validate your ownership.
Units that arrive without your specific Return Authorization number, without a suitable shipping
carton or with evidence of improper internal packing must be refused. We do not accept collect
shipments. After repair under warranty, the unit will be returned to you via prepaid UPS. In the case
of a non-warranty repair, contact us and we will advise you of the repair charges before you ship the
unit to us. The same packing and Return Authorization number requirements apply.
