Sony Trinitron 420gs

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • weirdlookinguy
    Badcaps Legend
    • Sep 2007
    • 1638

    #1

    Sony Trinitron 420gs

    Hey guys, I've got a 19" Sony Trinitron 420gs monitor. It's an excellent monitor, one I picked up about two months ago at a thrift shop for ten bucks. It's in good shape, nice bright and clear, but it takes a while to warm up, not really sure if it's relevant to the problem I'm having. It's got a manufacture date of 1999, and was made in the USA (Sony Rancho Bernardo plant, which is only like 20 minutes away from my house, kinda cool). The problem is that the top centimeter of the screen is kinda "squiggly", it bulges in, out, in out, then in again. I've attached a picture of the monitor itself, and of how the distortion looks from the top left corner of the screen. It was taken with my phone so sorry about the poor quality! The problem started a few weeks ago, but it was barely noticeable until today. Help anyone?
    Attached Files
  • weirdlookinguy
    Badcaps Legend
    • Sep 2007
    • 1638

    #2
    Re: Sony Trinitron 420gs

    hmmm, I turned off the monitor for about 5 minutes, then turned it back on and now it's gone, last time the problem appeared as soon as it was turned on.

    Any ideas?

    Comment

    • kc8adu
      Super Moderator
      • Nov 2003
      • 8832
      • U.S.A!

      #3
      Re: Sony Trinitron 420gs

      the slow warmup could be a bad cap on the 6.3v line for the heaters,weak crt,or depending on how slow normal for a sony crt.
      if your glitch at the top only shows up cold its likely a bad cap near the vert out chip.

      Comment

      Related Topics

      Collapse

      • 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
      • nick3092
        SGI GDM-5011P CRT Monitor (Sony Trinitron) Help
        by nick3092
        Hello all. I have a 21" Sony Trinitron CRT monitor I'm hoping to repair. It's technically an SGI monitor, model GDM-5011P. I showed the attached pictures to a couple people who are slightly knowledgeable in monitors and/or electronics in general. And the general consensus is that it's an issue with the deflection board, or less likely the power supply. Most likely the deflection board though, as it looks like an issue with the horizontal sync. I'm hoping that it just needs a recap to fix it. The service manual complete with schematics, block diagrams and parts lists is available to view or...
        04-14-2020, 07:05 PM
      • FZG
        Sony BVM1410PM (CRT Monitor) - Coil Choke Replacement
        by FZG
        Hello there, helpful forum people!

        I am in the process of fixing an old (ca. 1990) Sony BVM1410PM CRT monitor and need some help. The PSU board of this monitor had failed and I had to replace quite a few capacitors and other parts but now - with my limited knowledge - I ran into a wall.

        On the board there is a coil choke that has failed (tested with inductance meter) and I don´t know what to replace it with. According to the device´s service manual the part in question is a "Coil, Choke 525 uH (Sony P/N: 1-459-643-11)".

        The original part...
        05-10-2023, 11:54 AM
      • 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
      • Loading...
      • No more items.
      Working...