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There’s a buzzing or crackling sound from my transistor radio sometimes when I’m listening to my favourite radio station. What is it?

April 26, 2017buzzing crackling favourite I’m listening radio sound station transistor

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There’s a buzzing or crackling sound from my transistor radio sometimes when I’m listening to my favourite radio station. What is it?

1 Answer

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The buzzing or crackling could come from a number of possible sources, but a very common one is a faulty thermostat that arcs for a long period of time – several seconds – when it switches. During this period it’s creating a lot of radio noise. The cure is to replace the thermostat.