LCD TV and Monitor basic troubleshooting guides

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  • momaka
    HannStar Hanns-G HC194d LCD monitor repair
    by momaka
    Normally, I never post repairs this quick after I do them, because… I am usually very slow. But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
    03-15-2023, 10:17 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
    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
  • sew333
    Pc shutdown, monitor flickered with no signal after 10 seconds
    by sew333
    My pc:
    10850K stock 4800mhz stock Kraken X73 good temps
    2x16 GB DDR4 GSKILL 3000mhz XMP
    Seasonic Tx-850 Ultra Titanium
    Gigabyte Rtx 3090 Gaming OC
    Aorus Z490 Pro Gaming
    1 TB SSD


    4 weeks ago i launched Metro Exodus Enhanced and during cinematic advertisement part ( 30 fps ), pc just shutdown.
    Also monitor flickered with NO SIGNAL 10 seconds after shutdown. So only monitor and pc was affected.

    Next i pressed only power button, rebooted again and its fine again. Happened once and i cant reproduce.


    Power...
    02-22-2022, 10:27 AM
  • litec systems
    Need help with troubleshooting tips\ schematics -LG monitor that goes off quickly
    by litec systems
    Hi all
    Does someone has the test points \ schematics for lg eax65543115 ( 22" version, lg led monitor)
    Or any ideas how to troubleshoot it?
    The screen turns on for like 10 seconds, then goes off ( kinda protection triggered, as it goes off like you've been pressing the power button)
    , but the cpu gets hot quickly within those 10 seconds , AND STAYS HOT EVEN WHEN IT'S OFF
    I'm suspecting it gets over voltage \ current and triggers some OV \ OC PROTECTION but hopefully it's not too late ( that the chip is broken)

    NOTE that it's a trashpicked monitor...
    08-25-2023, 06:34 PM
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