L-ACOUSTICS LA 24 MANUAL Version 2.2 17/11/08 22
• MAINTENANCE
Under normal use the LA 24 amplifier should give years of trouble free service. The only user
maintenance required is to remove and vacuum the front grill periodically.
In some extreme cases it may be necessary to clean the inside of the amplifier. This is usually
necessary after prolonged use in environments where "cracked-oil" smoke machines are
present.
If you are using your amplifier for heavy duty use i.e., concert touring, it is recommended that
you have your amplifier serviced every 3 years, purely as a preventative measure.
• TROUBLESHOOTING
These are typical things to check if you think your amplifier is faulty:
Fault: No output.
If the output bargraph is functioning there is nothing wrong with the amplifier and the likely
cause is an unsecured Speakon.
Check that the VHF protection is not activated. If it is, remove possible high frequency
oscillations from the relevant input.
Fault: The amplifier goes into thermal protection when driven at low level.
Check that your loudspeaker does not have a short circuit in its windings (this can occur when
the speaker's voice coil gets hot).
Fault: The amplifier goes into protect with power indicators off.
Check that the AC line voltage is not outside the amplifier’s operating range (130-260 volts).
Over/under-voltage protection may have occurred.
If the amplifier is connected by mistake to a 3 phase supply (415v), an internal non-resettable
fuse or resistor may have blown (return the amplifier for service).
Fault: The amplifier does not respond even after checking the above items.
In the unlikely event that there is a non-user rectifiable fault, return the amplifier to L-
Acoustics or an approved service centre.
L-ACOUSTICS cannot be held responsible for damage or injury as a result of the
top cover being removed.
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