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Kathleen KnoxJul 31, 2025
What to do if there is no sound output from promethean PRM-10 Projector?
- RRebecca RamosJul 31, 2025
If there is no sound coming from your Promethean Projector, check IC5001 and its peripheral circuit. Also, verify the 5V_AUDIO and 9V power supplies. Then, check IC5031 and its peripheral circuit. Check the Mute signal at pin 1 of IC5031.