![]() There might also be an interruption in the early power supply: for instance, a failing power transformer. The speaker wiring has deteriorated, or the jacks have rusted to the extent that they can no longer make the proper connection The output transformer is open or otherwise faulty However, it is certainly possible for the speaker to be interrupted in a way that also silences the speaker. This is because, in many cases, the signal is interrupted well before the speaker, leaving the speaker to transmit any incidental noises that enter the circuit outside of the fault area. For instance, you may hear hum, hiss, reverb crash (if applicable), or even popping sounds when connecting or disconnecting inputs. ![]() Usually, in a no-sound scenario, you will hear some sound coming from the speakers, even if the signal path happens to be cut off. ![]() If you don’t see these things, you should read the guide My amp doesn’t turn on first. If you see tube glow and the pilot light is on, that is an indicator that the early power supply is functioning correctly (i.e., your amp turns on). If there is absolutely nothing coming from the speakers, you should distinguish between an amplifier that is not turning on and an amplifier that is not passing signal. ![]()
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