AMS35i
AMPLIFIER PROBLEMS?
Issue 2
Page 10 of 12
Basic problem-solving with an amplifier is similar to troubleshooting other electrical or electronic equipment. Always check the most obvious
possible causes first, such as the following examples:
Problem Probable Cause Remedy
No power when POWER button is pressed Mains power plug is not fully inserted into
rear socket
Plug in securely.
No sound Mute function is still active
Wrong connections between input sources and
the unit
Speakers not connected, or incorrectly wired
Press the MUTE button on the remote control
to cancel.
Check audio input lead connections
Check speaker cables
Sound cut Loose connection
Output overload or short circuit
Check speaker and input connections
Switch unit off. Check speaker connections
for shorting strands or wires. When all has
been double-checked reduce volume and
switch unit back on.
N.B. Take great care when bi-wiring or bi-
amping that speaker bass and treble linking
straps are removed; see speaker manual for
more information
Sound is not precise, lacking in bass and
stereo image
Speakers are connected out of phase, i.e.,
connections to one speaker (+ and -) are
reversed
Ensure speakers are connected with same
polarity at amplifier and speaker ends.
Hum Audio connector plug not fully pushed in
Cable Fault
Unsuitable Cable
(e.g. cable grounds not connected)
Insert plug securely
Check cable is connected at both ends.
N.B. Some esoteric cables have internal
wiring intentionally disconnected/modified.
For best results on all inputs analogue AND
digital, please use good quality screened coax;
signal and screens both separately connected
at both ends.
No audio output, or too low level output Incorrect or missing connections Check connections and make sure they are
secure.
Remote control does not work Amplifier’s POWER switch is set to off
Unit overheated
One or more batteries fitted the wrong way
round
Batteries are flat
Remote control is not pointed directly towards
the front panel of the amplifier
Interference from another source
Set switch to on
Check for excessive heat build-up.
Insert batteries correctly
Change batteries for a new set
Ensure there is no obstruction between the
remote control and amplifier front.
Lighting such as fluorescent, incandescent, or
even sunlight contains large amounts of infra
red radiation. Ensure such sources are not
shining directly on the infra red window as
this could swamp the signal from the remote
control.
Also check the system and any other nearby
remotes for stuck buttons
Remote control range has greatly reduced Batteries are running out Change batteries for a new set.
If none of these actions affect a cure, please contact the dealer, or an authorised Musical Fidelity service agent. Remember; never open the case
of the AMS35i, as this will invalidate the guarantee.
(7 pages)
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