Help Salvaging Speakers from LCD Monitor

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • JuniperSprouts
    Solder Soldier
    • Aug 2010
    • 119
    #1

    Help Salvaging Speakers from LCD Monitor

    My LCD went out on my old (2002) monitor. The speakers still function. I hooked up sound to it & was delighted to see that I could still use it, but that was short lived. Evidently, it senses that no monitor is connected, and it powers the board down.

    Is there a clever (or not clever) way that I can trick it into staying on permanently?
    Attached Files
    Tags: None
    • eccerr0r
      Solder Sloth
      • Nov 2012
      • 8701
      • USA
      #2
      Re: Help Salvaging Speakers from LCD Monitor

      I've found the speakers on pretty much all monitors suck...

      Anyway, take a better photograph of the lower left hand corner with the audio circuitry, you'll have to either override power to the amplifier somehow...

        Comment

        • JuniperSprouts
          Solder Soldier
          • Aug 2010
          • 119
          #3
          Re: Help Salvaging Speakers from LCD Monitor

          The IC is TDA7496L: https://www.alldatasheet.com/datashe.../TDA7496L.html

          When I press the power button, the monitor turns on. It turns off after roughly 5 seconds since no active VGA signal is detected. I can not figure out how to tell the audio portion not to go into standby mode.

            Comment

            Previous template Next

            Related Topics

            Collapse
            • wattage
              AOC AG493UCX 49-inch monitor - Firmware request
              by wattage
              Hello Badcaps Community,

              I purchased a preowned AOC monitor that is not working and out of warranty. It was sold as not working. I am looking for guidance on self-repair. In particular, I am after the firmware for the monitor. At the end, I have included monitor model information and links to pics and vids of the issue.

              The problem is that it will not display a picture on any of its inputs. And the on-screen menu does not appear. The power button works properly. It powers on with the remote as well. But the on-screen menu does not appear, even when not connected to any...
              07-13-2025, 04:41 PM
            • ant3202
              HP 27es - LED monitor - Monitor Flashing On - Off
              by ant3202
              Hi Everyone

              Lately I am experiencing the deja-vu incident on one of the led monitor like this.
              https://www.badcaps.net/forum/troubl...lashing-on-off

              The monitor is HP 27es LED Monitor
              https://h30434.www3.hp.com/t5/Deskto...e/td-p/6804692

              The monitor will randomly blackout and display no signal and will recover again.
              Sometimes need to power and off again to restore the display but...
              03-20-2025, 07:30 PM
            • Rick_1234
              LG 23MP55HQ LED Monitor turns off after a few seconds or flickers.
              by Rick_1234
              Good evening, gentlemen.

              I have a problem with my monitor. It turns off after a few seconds or flickers. Shining a flashlight on the screen doesn't show any image, so I guess it's not the "2 seconds to dark" I read in the forum.

              To turn it back on, I have to press the power button twice. Then after a few seconds it turns off again or flickers. See video.
              https://drive.google.com/file/d/1L6S...ew?usp=sharing


              Things I tried

              - Bought a new AC adapter thinking that was the problem but the problem...
              06-22-2024, 04:44 PM
            • momaka
              Philips F9217L-50R speakers – build quality impressions and DIY surround repair
              by momaka
              More Lo-Fi speakers and another DIY surround repair. The patient this time: a pair of Philips F9217L-50R speakers from a budget Philips rack/component system from the '80's. The system belongs to my brother in-law… or actually his parents. However, they didn't want it when they moved houses and he liked it anyways, so he ended up keeping it. It's a pretty cool-looking vintage system with a wood/veneer cabinet and shelves for records and cassettes. Unfortunately, I didn't get a chance to take a picture of it or get the model #'s (but maybe next time I visit, if anyone is curious?)
              ...
              02-15-2022, 12:43 AM
            • momaka
              Wise Wing F199 19'' LCD monitor - recapped
              by momaka
              Looking through my repair pictures and notes, it's been a long time since I posted anything in the LCD monitors section. So here goes that.

              I'm dedicating this thread to one of the very first LCD monitors I repaired (if not the first one), which was more than 10 years ago now. The monitor is a Wise Wing, model F199. It's a 19” CFL-backlit LCD. I got it for free off of Craigslist in 2009 from a guy, who said he bought it for cheap from Wallmart and the monitor worked only for a little less than 2 years before quitting.

              When I saw the Craigslist post, I wasn't...
              08-24-2020, 10:58 AM
            • Loading...
            • No more items.
            Working...