Sync_ope no output


I have recently assembled a sync_ope board from underscores; however, i do not receive any output from video_out or video_send. The LED indicator lights up when i connect an input source and I have positive voltage readings with a multimeter on both out and send jacks. I have tried biasing the trimpots but I still have zero output. I have an oscilloscope coming next week which should help troubleshooting, but if anyone has any suggestions that would be much appreciated.

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