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Paul LarsenJul 30, 2025
Why doesn't the status indicator light up on my Yamaha NX-A01?
- MMr. Brian EvansJul 30, 2025
If the status indicator on your Yamaha Speaker System doesn't light up when you press the "STANDBY/ON" key, it may indicate a problem with the microprocessor (IC501) circuit on the MAIN (2) P.C.B. You should check the RESET signal. Verify that Q501 and its peripheral circuit are OK, and that pin 18 of the microprocessor (IC501) is also OK. Make sure the cables are correctly reconnected. Also, verify the power supply section. Ensure that +12V and +12VA, as well as +5V, for the system are all OK.