Operation Manual; 6 Troubleshooting ; CTs Multi-Channel - Page 18

Operation Manual

CTs Multi-Channel 

Power Amplifiers

page 18

CONDITION: No sound, even though 
the amp has power. 

Power LED is on 

without flashing and the amp is receiving an 
input signal. Signal indicator is flashing.

•

Speakers not connected.

•

Open circuit due to speaker failure.

CONDITION: No input signal.

(Signal indicator is not flashing even though 
audio is applied and channel is ready).

POSSIBLE REASON:

•

Input signal level is very low.

•

Input cables have become disconnected.

•

There is a short on the amplifier

output. First disconnect your speakers 
from the affected channel(s) one by one 
to determine if one of the loads is 
shorted.

6 Troubleshooting 

CONDITION: Thermal indicator is 
flashing.

POSSIBLE REASON:

•

The amplifier has become too hot for 

safe operation. Check for loads less than 
2 ohms, and for excessive input levels. 
Check for proper ventilation and proper 
mode-switch setting. Driving low-
impedance loads while in high-voltage 
mode can cause overheating.

CONDITION: All channel thermal 
indicators are flashing.

POSSIBLE REASON:

•

Power supply thermal overload.

•

DC or excessive low-frequency signal at 

the amplifier’s output has enabled 
speaker protection.

CONDITION: Bridge LED is flashing

.

POSSIBLE REASON

:

•

The mode switch was switched while the 

power was on.