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Why does my rear projection big screen television seem to flicker, or like its losing power?

When I turn on my television (which is only about a year old) it seems to act like it wants to turn off, and makes a clicking noise. Some days it doesn’t do this. Other days it will do this for 30 minutes and stop. Any reason why it might do this?

Hi, without knowing too much about the model etc, my best guess as an ex television engineer would be the clicking noise that you are describing i would say in the televisions power supply (inside the set) They normally have what is called a switch mode power supply which unlike the name has no mechanical switches. It relies on various electrical components. If it is intermittent as you say my guess would be a dry solder joint or maybe a capacitor either are not dear but sometimes locating the faulty part can take time.

This entry was posted on Friday, February 26th, 2010 at 3:10 am and is filed under TV Technology. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

5 Responses to “Why does my rear projection big screen television seem to flicker, or like its losing power?”

  1. guill m Says:
    February 26th, 2010 at 8:31 am

    It might be the wall outlet. Try plugging it in a different one if it still acts the same its probably the television set that might have a bad power supply.
    References :

  2. Myles Says:
    February 26th, 2010 at 8:43 am

    Depends on the model.
    The description of clicking and screen flickering with a DLP could be the color wheel is off axis.

    CRT RP: Would be power issue.

    LCD RP: Could be the lamp.
    References :

  3. biker550_uk Says:
    February 26th, 2010 at 9:17 am

    Hi, without knowing too much about the model etc, my best guess as an ex television engineer would be the clicking noise that you are describing i would say in the televisions power supply (inside the set) They normally have what is called a switch mode power supply which unlike the name has no mechanical switches. It relies on various electrical components. If it is intermittent as you say my guess would be a dry solder joint or maybe a capacitor either are not dear but sometimes locating the faulty part can take time.
    References :

  4. kc2irv Says:
    February 26th, 2010 at 10:02 am

    I can’t be certain due to the vague description fo the problem and no model number but it is likely a bad capacitor to the power relay. I have a a few models with that same problem. Mos tof the newer ones now dont even use relays anymore.
    References :

  5. jimbob92065 Says:
    February 26th, 2010 at 10:11 am

    Sounds like a slightly defective or intermittent relay, need to get it replaced (the relay)

    ALL TVs still use relays
    References :
    +30yrs CE repair

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