How to troubleshoot no sound on Arcam Amplifier?
If there is no sound from the Arcam Amplifier PA720 / PA240 / PA410, ensure the following: * The power amplifier is correctly plugged in and switched on. * Your audio/video source (e.g. pre amplifier) is correctly connected. * The amplifier is not in protection mode. * The amplifier is not muted. * The RCA/XLR input switch is in the correct position.
What to do if the Arcam Amplifier sound cuts out unexpectedly?
If the Arcam Amplifier PA720 / PA240 / PA410 unexpectedly cuts out, it may have entered a protection mode due to a detected fault. The front panel LED will indicate the fault type: * FLASHING WHITE: The internal temperature of the unit reached an unsafe level. Allow the PA720 / PA240 / PA410 to cool off. * FLASHING RED: The amplifier detected a speaker short circuit. Inspect all speaker cables to ensure none are shorted. * FLASHING ORANGE: PA720 and PA240 only. The amplifier detected a DC offset. Following any of these faults, the amplifier will turn off and power to the speakers will be removed. To continue using the PA720 / PA240 / PA410, remove the fault and turn the unit OFF then back ON.
General| Type | Power Amplifier |
|---|---|
| Channels | 2 |
| Input Sensitivity | 1V |
| Input Impedance | 10 kΩ |
| Power Consumption (maximum) | 800W |
| Power Output (4 ohms) | 380W per channel |
| Frequency Response | 20Hz - 20kHz |
| Signal to Noise Ratio | 110dB |
| Damping Factor | 100 |
| Total Harmonic Distortion | <0.005% (20Hz - 20kHz, 100W, 8Ω) |
| Dimensions | 433mm x 425mm x 171mm |
Avoid operation in environments with flammable gases or fumes.
Handle live circuits with extreme caution and disconnect power before touching.
Do not perform internal service alone; ensure first-aid assistance is available.
Do not substitute parts or modify the instrument to avoid hazards.
Heed warnings preceding potentially dangerous procedures.
Be extremely cautious of dangerous voltages within the unit.
Guidelines for servicing, identifying damage, and understanding hazard symbols/warnings.
Steps to prevent electrostatic discharge damage to components.
Step-by-step instructions for verifying unit functionality and performance.
Guides for diagnosing and resolving common operational problems like no sound or cut-outs.
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