All Inputs No Activity

Tests 1 - 2:

Tests 3 - 4:

SYMPTOM
ALL INPUTS NO ACTIVITY

WHEN MONITORED
When the DRB III performs the amplifier Input Test.

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

POSSIBLE CAUSES
- (+) Circuit shorted to ground
- (-) Circuit shorted to ground
- Open speaker circuits
- Amplifier
- Radio