All Inputs No Activity

Test 1 - 2:

Test 3 - 4:

SYMPTOM
ALL INPUTS NO ACTIVITY

WHEN MONITORED
When the DRBIII performs the amplifier Input Test.

SET CONDITION
The Amplifier detects no activity on any of the input circuits.

POSSIBLE CAUSE
- (+) circuit shorted to ground
- (-) circuit shorted to ground
- Open speaker circuits
- Amplifier
- Radio