Olevia 237-S12

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • jgrice53
    Senior Member
    • Dec 2012
    • 63
    • usa
    #1

    Olevia 237-S12

    Can a defective T-con cause loss of sound as well as a loss of video?
    This TV will come and and play perfectly for up to 18 hours, and then the video and sound will go out. The black lights will still be on. Unplug and wait for 1hour and plug back in and it will power up and play normally for another 18 hours. I have replaced 3 slightly bulging caps on the power supply and all the voltages on the main and power board are exactly the same whether it is playing or if the pic and sound is gone. I can not locate a SM for this TV and the boards have no voltage markings, so I wrote down all the voltages when it was playing and compared them to the voltages when the pic and sound goes out. Any ideas out there?
    Tags: None
    • jgrice53
      Senior Member
      • Dec 2012
      • 63
      • usa
      #2
      Re: Olevia 237-S12

      here are pics
      Attached Files

        Comment

        Previous template Next

        Related Topics

        Collapse
        • ChaosLegionnaire
          what i went through dealing with my mobo with dead onboard sound!
          by ChaosLegionnaire
          so i took out one of my spare gigabyte ep35-ds3r mobos from storage for use to do some cpu, ram and video card testing of stuff i bought from ebay and got for free from momaka. he bought 50 e8400 cpus for cheap from ebay some years ago and i decided to help him relieve him of some of his supply since he had waaaay too many!! what did we say about hoarding too much stuff and depriving others of them?! *cough* socialism *cough* lol!

          i had to blow some dust off the board and heatsinks with the datavac as i didnt clean it up before putting it in storage. after finishing...
          09-13-2022, 09:02 AM
        • maneatingmonkey
          Missing LCD Panel Voltages VGH, VGL, VCOM (TCL 55P6US Sound & Backlight but NO Picture)
          by maneatingmonkey
          I have a TCL 55P6US with sound and backlight but no picture. This model does not have a T-CON board, and the right (rear perspective) panel board is fed from the left panel board. I have not been able to induce any change by disconnecting the secondary panel board or the tape cut-off method on the primary board.

          There are a bunch of voltages missing on the panel boards. I can't find any shorted caps of the panel boards, and all of the missing voltage rails read in the kiloohms, which leads me to suspect the issue may lie on the circuit board, rather than a short in the panel.
          ...
          L Panel #1
          11 Photos
          03-27-2024, 07:17 AM
        • televizora
          HP 8470p - distorted sound and noise when playing audio
          by televizora
          Hello.
          I have an issue with HP 8470p - rather strange one.
          I have a noise and sound distortions on both internal speakers and external speakers, when I plug such into the 3.5mm audio jack.
          Seems like the noise is present especially when I play audio, where there are parts/sections where the volume of the actual recorded sound is low.
          Interestingly, when I play the windows sound test, everything seems to be almost okay. The sound/distortions are similar to when you have interference from some other piece of equipment nearby or when you have an audio receiver with bad amplifier...
          12-31-2021, 10:25 AM
        • Capacitorial
          Powersupply has all the voltages - Monitor still no power
          by Capacitorial
          Hello guys,

          I have a Philips 240B7QPJEB. The monitor seems completely dead.
          I opened it and measured the voltages of the powersupply. I found that a mosfet was dead and replaced it.
          On the connector, that goes to the TCON board, all voltages 15-19V and 5V are present.
          The small connector on the left of the PSU has two cables with 18V and all the other have 0.2V. It connects on this small connector on the left ontop of the panel. I guess the backlight? Seens fine I guess.
          The weird thing is, that the Power LED is powered over the TCON board.
          On The TCON...
          12-28-2024, 02:12 PM
        • Christos Tsiligiannis
          Marian Trace Alpha sound card repair help
          by Christos Tsiligiannis
          Hello to the forum.

          My name is Christos, I am new to the forum here and i am posting from Greece.

          So i have this old German sound card from Marian, called Trace Alpha. To be exact i have 2 of them and i use them professionally for my small FM radio station here. The first one works like a charm, but the second one does not work at all.

          To be more specific in the same exact pc with windows 7 (i even tried 32bit) the one works while the other doesn't.

          So i tried asking for a schematic from the company and they would not give me one. Instead they...
          11-18-2024, 05:26 AM
        • Loading...
        • No more items.
        Working...