Why does my Flex 3000 make cracking noises from inside when it gets warm?

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  • Problem
  • Updated 5 years ago
  • Solved
My Flex 3K makes cracking noises inside the blue box when the PA gets warm. I don't really bother with that noise since I most of the time operate with headphones on. But when something expands/ contracts all the time, I am afraid it will eventually break.
Any idea how I could identify the cracking source or should I not worry at all?
73 Harry, 7Z1HL
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Harry

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Posted 5 years ago

  • 1
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Tim - W4TME, Customer Experience Manager

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Harry,

We need to look into this hardware issue in more depth.

I have converted this Question topic to a Problem post and transferred it to the HelpDesk. If you are experiencing issues of this nature, please submit a HelpDesk support ticket (using the Zendesk link on the front page of the community in the right side bar)
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Steven Hess

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Mine did this popping for about 6 months and finally settled down. It is some kind of thermal expansion.
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Harry

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Hi Tim,
I loosened all screws of the PA board and moderately tightened them again. Now the radio is lovely quiet again as when it was new. I guess the screws holding the board to the chassis were too strongly tightened after repair.
Case closed and one more happy ham with a Flex
73 Harry, 7Z1HL
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Tim - W4TME, Customer Experience Manager

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Thanks for the follow up! That was a good idea.

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