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Separate reception from audio symptoms
A receiver can have a reception problem, an audio problem, or a power problem. Document whether any station is heard, whether volume changes the symptom, and whether the symptom affects every input.
External checks can include approved controls, antenna positioning and a known-good permitted audio source. Do not open mains-powered or tube equipment as a beginner. Use a technician when internal diagnosis is needed.
Worked example
If a permitted auxiliary input plays clearly but radio reception is weak, the speaker path can work; that observation narrows but does not identify the fault.
Try it yourself
Write a symptom table for silent audio, hum, weak reception and intermittent controls.
Check your understanding
Clear auxiliary audio with weak radio reception suggests checking which area first?
The observation separates reception from at least part of the audio path.
References and further reading
Lessons and examples are original introductory material. These references offer further study; their material is not included as a copied course.
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