如果火牛發出V V聲即係代表乜

火牛發出V V聲
係咪即係命不久矣啊

原帖由 royying 於 2009-4-11 03:09 發表
火牛發出V V聲
係咪即係命不久矣啊

以前有無先?

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It means
1. The PSU (Power Supply) is under very heavy load
  (and maybe overload).
  Solution -- Replace the PSU with a better one.
2. There may be an wide air-gap between the cores
  of the Power Transformer. It cannot deliver the
  required power (at that moment).
Solution -- Also replace the PSU.
If yr PSU is in warranty, go to the dealer and ask
  for service.  If it is out of warranty, buy a NEW
  (and better) one.

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會唔會係風扇發出嚟嫁 係就換咗把扇佢啦

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原帖由 WINGLESLIE 於 2009-4-11 13:08 發表
會唔會係風扇發出嚟嫁 係就換咗把扇佢啦

係電器火牛,唔係電腦火牛

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電腦火牛試過..清塵後無事

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er....根據個人經驗...正常嘅...插咗用電器就冇事.如果係charger,插咗一個充滿電嘅電池都係仲會有VV聲嘅,但係插一個未充滿電嘅電池就唔會有vv聲....
不過,為咗安全起見,買過個都得嘅..因為nokia嘅charger唔會噉..其他嘅就唔知拉

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萬用電子牛有機會係無野叉情況下咁...
以前聽過好似話有機會電容差..有共鳴

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半導體轉電壓出既聲

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原帖由 鬼(?) 於 2009-4-11 23:00 發表
半導體轉電壓出既聲

高頻起震的聲音

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