bk av1260 User Manual

10 

 

 

 

No sound (‘on’ LED 
not illuminated) 

1. Power cord not plugged in. 
2. Power off at AC source. 
3. AC power inlet fuse blown or faulty 
 

1. Reconnect power cord. 
2. Check AC switch or fuse 
3. Check for shorts or overloading 
 

No sound on some 
or all selected 
channels (‘on’ LED 
illuminated) 

1. Speaker leads loose or faulty 
2. Line stage to amp cables loose or 

faulty 

3. Source to line stage cables loose 

or faulty 

4. Line stage or source not correctly 

selected 

 

1.  Tighten, repair or replace cable 
2. Tighten, repair or replace cable                       

 
3. Tighten, repair or replace cable 
 
4. Check all switch settings 
 
 

Sound lacks 
direction, bass 
weak 

1. Speakers connected out of phase 

1.  Check all connections making sure that 

cables are connected (+) to (+) and (-) to (-) 

Loud hum or buzz 
on one or more 
channels 

1. Poor ground connection in inter-

connect cables 

1. Check all connectors and repair as 

necessary 

Channel sounds 
distorted and low 
output 

1. Blown rail fuse 

1. Replace blown rail fuse inside amplifier. 

* *Note:

 If unit continues to blow power inlet fuses, 

please contact customer service to have the unit serviced. 

 

Under normal use, the amplifier will not require any special care. Clean the exterior of the unit by wiping it with a 
damp cloth to remove any dirt or dust that accumulates. Do not let any liquid enter the amplifier through its vents 
or top cover. It is recommended that the connectors on the rear panel be cleaned annually using isopropyl 
alcohol.