Question about ViewSonic E70f 17" CRT Monitor

1 Answer

No display, clipping sound appear

My E70f monitor has no display and the clipping sound appeared. All of the AC/DC voltages appear. What happened?

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  • CF Thor Sep 10, 2008

    What are the bad components that caused this problem? If it is short, then what could it be?

  • CF Thor Sep 10, 2008

    By the way, where is that clipping sound come from? I am trying to fix it

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  • ViewSonic Master
  • 19,396 Answers

The clipping sound is the internal safety switch that keep shutting down the monitor.
It means there is an internal problem on the main board (overvoltage, bad component , short).
Try unplugging power cord and leaving it unplugged two or three hours, this will reset ICs by draining power completely from circuits, it is called hard reset, it rarely works.
CRT monitors waste up to 15 times more energy than TFT screen, if your CRT starts giving troubles, then it is a good time for upgrading it to a new TFT.
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Posted on Sep 10, 2008

  • Ginko
    Ginko Sep 10, 2008

    There are like 3000 components inside a CRT screen, you need the service manual ($30) and a tester, then you follow diagrams from service manual to find the fault.

  • Ginko
    Ginko Sep 10, 2008

    The clipping sound comes from a relay mounted on the board, called the safety switch, and you cannot fix it , because that is the effect of a different fault, not the cause.
    Servicing electronics can lead to hazard and serious injuries if you do not know what you are doing.


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