Wisdom Audio Series SA-1 - Manual (Page 10)

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Front Panel
1 Power Switch and Indicator
The SA-1 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-1, 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
This LED provides visual confirmation of the operational status of your
SA-1. Any fault condition that causes the amplifier to shut down (for ex-
ample, a short-circuited speaker wire) will result in the LED indicator for
that channel blinking to notify you of a problem.
If this indicator is blinking, turn off the amplifier and completely discon-
nect the speaker wires. Turn the amplifier back on and check the status
indicator. If it is still blinking, there is likely an internal problem within the
SA-1. Please contact your local Wisdom Audio dealer or Wisdom Audio’s
Technical Service department for assistance.
If removing the speaker wires from the amplifier appears to solve the prob-
lem, check the DC resistance across the speaker leads you disconnected.
It should read several ohms (the exact number varies a bit by model). If the
DC resistance is under 1Ω, carefully check all the connections to make
sure no speaker wires are touching each other, or shorted out as a result of
their insulation having been damaged.