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Is a TV supposed to sizzle after its off?

Discussion in 'Electronic Repair' started by Matt, Dec 27, 2003.

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  1. Matt

    Matt Guest

    Hi all,

    I got an RCA 27" television for Christmas. The one thing I am concerned
    with however, is that after the TV is off, it continues to make a sizzling
    noise inside for ever! Even the first time I plugged it in the noise
    started up, and it doesn't stop. I'm not sure if new TVs all do this or if
    its a defect, as my last TV was roughly ten years old. If any experts out
    there could help me out and let me know what this might be, I'd greatly
    appreciate it. Thanks!

    Matt
     
  2. Sounds like the static from the screen being discharged in a controlled
    manner. My 32" Grundig is the same but it only lasts around 2 mins, starts
    quite loud then gets quieter, till approx 2 mins when there is no sound.
     
  3. Jerry G.

    Jerry G. Guest

    On some sets, after it is switched off, you will hear a static discharge for
    a few seconds. Some sets will last longer.

    If you put the power on, and there is a continuous sizzling noise, I would
    have it checked. Since the set is new there should be a warranty on it.
    During the warranty is the time to make sure that there are no problems with
    the set.

    --

    Greetings,

    Jerry Greenberg GLG Technologies GLG
    =========================================
    WebPage http://www.zoom-one.com
    Electronics http://www.zoom-one.com/electron.htm
    =========================================


    Hi all,

    I got an RCA 27" television for Christmas. The one thing I am concerned
    with however, is that after the TV is off, it continues to make a sizzling
    noise inside for ever! Even the first time I plugged it in the noise
    started up, and it doesn't stop. I'm not sure if new TVs all do this or if
    its a defect, as my last TV was roughly ten years old. If any experts out
    there could help me out and let me know what this might be, I'd greatly
    appreciate it. Thanks!

    Matt
     
  4. Ol' Duffer

    Ol' Duffer Guest

    Most sets now have high frequency power supplies that run
    all the time. When you push the "power" button it doesn't
    really turn off, but goes into "standby" mode where high
    voltage, scan, and sound are shut down. The sound you hear
    is probably something vibrating because of its changing
    magnetic field. Could be a loose core in the transformer,
    a ferrite bead that didn't get glued in place, etc. Some
    chassis have been notorious and have had supression kits
    issued. It most likely won't affect reliability, but the
    set really isn't supposed to do that, so it's up to you
    whether you put up with it.
     
  5. I got an RCA 27" television for Christmas.

    Ugh.
    Well, if you are concerned about this, then take the TV set back to the place
    of purchase for an exchange. See if they can allow an exchange for a better
    brand, though. RCA is definitely a brand that's lost it's touch rather badly.
    - Reinhart
     
  6. DS

    DS Guest

    badly.

    hmm.. I was actually thinking of purchasing a 32" RCA tv because it has the
    guide plus feature. Otherwise I'd go for the Panasonic or Toshiba. Are there
    any other brands that offer the guide plus?

    Thanks
     
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