Philips 42PFL5603D/27 with bad backlight inverter

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  • curt2199
    Senior Member
    • Oct 2013
    • 54
    • United States
    #1

    Philips 42PFL5603D/27 with bad backlight inverter

    I picked up this TV for $50 and the picture quality is decent. The people I bought it from said it would shut off after 5-10 mins. The first night I brought it home, I stuck it on my UPS battery backup with my Panny Plasma and watched Family Guy episodes for 2 hours and it never shut off. After moving it to it's final destination (bedroom) it would shut off much closer to the 5-10 min mark so I started some investigation and found that it the tv is not shutting off, the screen is going black (still playing sound as well) and I can still see the menu/image on it with a flashlight.

    So it appears the backlight inverter(s) is bad. It is now to the point where the time that it stays on is random (sometimes depending on if it is left completely unplugged or if a fan is pointed at the PSU with the back plastic off) and it tends to come on and then flicker and go out.

    My next question is, I've had some experience with electrical parts and soldering having taken some electrical engineering classes while back in college and worked on things here and there. Is this something that I could test and replace parts? I discovered that the inverter is actually built into the power supply.

    I'm attaching a picture of the power supply/inverter used on this TV. (Picture is of the part from an ebay listing).
    Attached Files

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    Tags: None
    • mmartell
      Badcaps Legend
      • Oct 2013
      • 3189
      • Canada
      #2
      Re: Philips 42PFL5603D/27 with bad backlight inverter

      Use a hair dryer in the suspect area to try to pinpoint failing component(s).

        Comment

        • notallbad
          Badcaps Legend
          • Oct 2012
          • 1190
          • UK
          #3
          Re: Philips 42PFL5603D/27 with bad backlight inverter

          You might want to check reverse side for dry/bad solder joints.

            Comment

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