philips 32 backlight problem

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  • chestercc
    Philips TV Backlight Repair
    by chestercc
    So i'm trying to replace the LED's in a Philips TV. It's 42" with a 715g7262-p01-000-0010 backlight driver board based around an O2 Micro OZ9902CGN.

    My issue is when I replace all the LED's on one board with the new 3V 300ma ones they immediately burn out when the set is powered again. I previously tried the same thing with 6V LED's and the backlight flickered for a bit but wouldn't start.

    The original LED's which I removed which are still working start to melt and burn when given more than 3V on DCPS so I know they shouldn't be higher voltage ones.

    ...
    11-18-2022, 01:15 PM
  • ohren
    Trying to control Philips backlight manually with PWM — brightness increases with frequency...?
    by ohren
    I raised the question of whether PWM on the power board "dim" pin would be a reasonable assumption for controlling the backlight of a Philips TV (55put6101/12): https://www.badcaps.net/forum/troubl...d-tv-backlight. I didn't receive any insights there so I went ahead and tried it.

    The setup is basically:

    Rpi3 hardware PWM → 220 Ohm → NPN transistor → dim pin

    Transistor is switching the 3.5 V supply on the power board....
    12-05-2024, 11:10 AM
  • Xristakis795
    42pfl5405/h05 philips lcd tv backlight problem
    by Xristakis795
    Hi i have the above tv and has backlight problem
    I noticed with a flashlight that I have picture and sound when I put an antenna
    My problem is that I do not have a device to test the fluorescent lamps and extend the transformer high to see which of the two is to blame and to give a solution to my problem
    I was thinking an easier solution would be to turn the TV into a LED but I had done it before in another (different model) and it looked like bright dots behind the lcd panel and it was ugly
    What do you recommend ?
    07-04-2021, 03:39 PM
  • Dobrowol
    Asus GA402RK keyboard and kb backlight problem
    by Dobrowol
    Hi. I have a problem with Asus ROG GA402RK. The keyboard suddenly stopped working along with the kb backlight. I replaced the keyboard and the ITE KBC chip and the problem is still the same. I don't see any passive elements that look damaged. Does anyone have an idea?
    04-28-2025, 04:30 PM
  • ononos
    LG M2362DP Backlight problem
    by ononos
    hello everyone!
    As the title states i am an owner of an LG flatron M2362DP 23 inch monitor Tv. Since i currently use it as a tv i'm posting the problem on the "troubleshooting tvs and video sources" section.
    I'm from Greece so English isn't my native language, so please forgive me for any mistakes i make. I have basic knowledge in electronics, and although i have a degree, many things have changed since i finished a 2 year coarse (over 30 years ago). Occasionally i repair easy stuff, mostly things that break at home like appliances.

    So i decided to try to...
    03-12-2023, 05:05 AM
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