Wisdom Audio Series SA-3 - Manual (Page 10)

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Front Panel
1 Power Switch and Indicator
The SA-3 features a sculpted front panel that conceals a switch under the
flexible left end of the middle section. Gently pressing the left end of the
center section will engage a microswitch under the face of the SA-3, which
will in turn toggle the unit between operate and standby. The international
symbol for power is inscribed in this location to designate its purpose.
There are three normal states for the lit indicators
• Lit amber LED on left side indicates the unit is receiving power
and is in standby
• Lit blue channel status indicators indicate the unit is receiving
power and is fully on
• If both the amber and blue LEDs are off, no power is being
supplied to the amplifier
2 Channel Status Indicators
These three LEDs provide visual confirmation of the operational status of
the three channels in your SA-3. Any fault condition that causes an individ-
ual amplifier channel to shut down (for example, a short-circuited speaker
wire) will result in the LED indicator for that channel blinking to notify you
of a problem.
If one or more indicators are blinking, turn off the amplifier and complete-
ly disconnect the speaker wires for the offending channel. (The LEDs are
arranged on the front as the channels are arranged on the back, as seen
from the front.) Turn the amplifier back on and check the status indica-
tor. If it is still blinking, there is likely an internal problem within the SA-3.
Please contact your local Wisdom Audio dealer or Wisdom Audio’s Tech-
nical Service department for assistance.
If removing the speaker wires from the offending channel appears to solve
the problem, check the DC resistance across the speaker leads you dis-
connected. It should read several ohms (the exact number varies a bit by
model). If the DC resistance is under 1Ω, carefully check all the connec-
tions to make sure no speaker wires are touching each other, or shorted
out as a result of their insulation having been damaged.