Circuit/System Testing

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IMPORTANT: Verify the auxiliary audio or video input device is operating normally before performing this diagnostic.

Auxiliary Video Inoperative or Degraded

Test for an open, short to ground or short to B+ on the auxiliary video high signal and drain wire.
- If all circuits test normal, replace the audio/video adapter.

Auxiliary Audio Inoperative or Degraded - Left or Right Channel

Install the left and right audio inputs into the audio/video adapter. Operate the auxiliary device audio and note the malfunctioning channel (left or right). Swap the left and right auxiliary audio inputs and verify that the original malfunction is still present.
- If the malfunction now appears on the opposite audio channel, the auxiliary audio device is not operating normally.
Test the suspect auxiliary audio signal circuit and drain wire for a open, short to ground or short to B+.
- If all circuits test normal replace the audio/video adapter.