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9. TROUBLESHOOTING
Cracking noises when switching on and off
POSSIBLE CAUSES
Household electrical equipment such as older refrigerators or 12-volt halogen light-
ing systems can generate strong radio interference when they switch on and off.
This electrical interference can cause an audible crack or pop through the speakers.
REMEDY
Connect your hi-fi system to a central mains distribution board plugged into a wall
socket. Do not connect any other electrical equipment either to the board or socket
Volume imbalance between the left and right channels
POSSIBLE CAUSES
Damaged cables and poorly fitting phono plugs can create resistance in
the signal path, which can cause one channel to sound louder than the
other.
Recording equipment (reel-to-reel, cassette, CD or DAT recorder) with a
faulty input or lead can overload the Record output and cause an imbal-
ance between the left and right channels.
REMEDY
Change the lead, clean plugs and sockets with isopropyl alcohol.
Warning: Do not use contact cleaning sprays.
To isolate the cause of the problem, disconnect your recording device(s)
one at a time. Check the interconnect cables used for recording and renew
them if necessary. If you still have not alleviated the cause of the problem,
have your recording equipment checked for faults.
Increased hiss on one channel
POSSIBLE CAUSES
Hiss that varies in level is a sign of a faulty or worn driver tube
REMEDY
You must replace the tube that is causing the problem. Return the amplifier
to us if necessary. We will also gladly ship replacement tubes. You will find
important instructions on replacing tubes in Section 6.1.
