LG W2453V Picture Dies After 2 Seconds

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  • JJAAMM
    SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seconds
    by JJAAMM
    This was my main TV for the last 6 years. I'm not inclined to throw out a $2600 TV so quickly so I'm trying to investigate the issue.

    Problem
    TV was disconnected from power for 6 months during construction. When I plugged it yesterday picture was fine, after 30 seconds it dimmed then started developing horizontal lines, picture then starts to ghost vertically until it degrades into vertical streaks. TV always displays a perfect picture when cold. I can unplug TV for 5 minutes and plug it back in and picture is restored for 20 seconds. I can also keep it in standby mode...
    07-06-2023, 06:01 AM
  • kotel studios
    Funai 32FL553P/10 - squealing from PSU, dies after 10 seconds, blank screen after logo, bootloops
    by kotel studios
    Hi,

    Found an Funai 32FL553P/10 TV on sale for cheap listed as broken, so I decided to give a shot at reparing this.

    State I got it in:
    Squealing from the PSU
    After logo I get a blank screen
    After 10 seconds of having a blank display w/ backlight the TV dies
    Give it 7-10ish seconds again and it starts to bootloop.

    What I did so far:
    Replaced all the caps on the PSU (apart from primaries, they were fine and none at hand)
    Checked all voltage rails:
    5VSB - 4.8V
    AMP+13V - 14.4V
    13V - 12.98V (in manual 12V)...
    09-21-2025, 02:00 AM
  • Tr0ll
    T-con suspect issue. Both ribbon cables no picture. One ribbon cable ok. (58pus8545)
    by Tr0ll
    Hi guys! I realized you have a lot of knowledge here so i am hoping you could point me in right direction with my odd issue.

    The Tv is a Philips 58PUS8545/12, it had no picture but working backlights.

    Original T-con:
    Opened the Tv and tested to unplug one ribbon cable at a time. With this test i could see that i got fine picture on both halves as long as there was only one ribbon cable connected, with two connected picture were gone.

    First replacement T-con:

    I thought it might be t-con and ordered new t-con from china(supposedly tested)...
    10-07-2023, 07:48 PM
  • Rayblaster
    HP RP7 RP7800 from 2012/2013 worst fault - has "character"
    by Rayblaster
    Hello friends, I've got a nice toy to play with - it is an HP RP7800 All-in-one POS system. I got it for free and it has one problem - it turns on very rarely, and just for a few seconds. After that it dies and doesn't come on if I don't leave it unplugged for at least 2 hours. I've repaired motherboards before, this is not my first one, but problem with these types of faults is that everything you check on the board will usually be fine. This is the case for me here.

    I dissassembled it completely, and got my hands on the motherboard. Model No. is PIQ67H/Higgins 11047-I 48.3GD02.011....
    12-30-2024, 06:28 PM
  • FriedFred
    Schenker VIA 15 PRO, PF 4NU1F V1.0, P/N: MBPPF4NU18-F310 - 36mA in stand-by
    by FriedFred
    Hello, everyone!
    I have here a Schenker VIA 15 PRO, with this numbers on the board: PF 4NU1F V1.0 and P/N: MBPPF4NU18-F310 .
    I took out the memory and the battery and the SSD.

    So, in stand-by, only the board, takes 36mA. No power-button pressed at all, I can measure 1.8V, 3.3V, 5V. All coils present voltages except the two power rails for the CPU. The CPU is a AMD Ryzen 5 4600H.
    After pressing the power-button, the current raises to 500mA and the two power rails for the CPU show up with 0.8V.
    After several seconds, the fans switch-off and the board keeps powered...
    03-08-2025, 04:45 AM
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