Optimus SSM-1250 User Manual

19

With proper care and handling, your mixer should give you years of trouble-free
service. However, if your SSM-1250 is not working properly, follow these sugges-
tions to see if you can eliminate the problem. If you cannot, take the mixer to your
local RadioShack store for assistance.  

Nothing works

Check the AC power connection and make sure the AC 
outlet is “live.”

Check all the connections to the system (amplifier/
receiver, input sources, and so on).

Check the fuse. See “Replacing the Fuse” on Page 21.

No signal from an audio 
input source 

Make sure the 

 switch is not set to 

.

Check the mixer’s and the source’s control settings.

Check the connection between the mixer and the input 
source.

Hum from 

 

sources

Make sure the turntable’s ground wire (usually black or
green) is connected to the 

 screw on the back of

the mixer.

Hum from other input 
sources

Make sure there are no low-level inputs connected to 
the 

input

jacks.

Feedback “squeals”

Move the microphone further away from the output 
speakers or use a unidirectional microphone.

32-3009.fm  Page 19  Tuesday, August 10, 1999  8:31 AM