Samsung T220 - Possible Scaler Issue?

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • microbyte
    New Member
    • Mar 2015
    • 3
    • Portugal
    #1

    Samsung T220 - Possible Scaler Issue?

    Hey all,

    I've been scratching my head around a Samsung T220 which first had a "stuck" button behavior, kept cycling through all the "MagicBright" modes at the maximum speed it could. I was able to "fix" it by adding an extra pull-up resistor to the 1.8V on the KEY2 line. No more OSD popping up all the time.

    Now, when I solved this problem, another one appeared. Now I'm having a strange slight blur on the image (looks like horizontal misalignment), which can only be seen on the image coming from the computer. Maybe 1 pixel only... It's not that it's slow, it is behaving fast, but the image is all blur.

    I've tried both DVI and VGA, the problem persists.
    Also tried with another computer, and the problem is there...
    I replaced all the capacitors on the main board (scaler board), didn't solve.

    The strange part for me is that all the OSD layer can be read perfectly and shows no problem whatsoever.

    Can you help me sorting out this problem?
    I have a scope available which I can use to test something at your will.
    Thanks!!
    Tags: None
    • microbyte
      New Member
      • Mar 2015
      • 3
      • Portugal
      #2
      Re: Samsung T220 - Possible Scaler Issue?

      Hey all,

      Just to finish the thread, I'd like to say that there is nothing wrong with the board nor the display. Actually, it is pretty embarrassing: for some reason, the "sharpness" settings on the monitor has been reset to 0 and thus my image was blurry (and the OSD was fine)

      So, thanks anyway for anyone that read this.
      I hope this last post helps others having the same "issue".

      Best regards!

        Comment

        Previous template Next

        Related Topics

        Collapse
        • Document Archive
          Samsung Galaxy Book 2 Notebook Specification for Upgrade or Repair
          by Document Archive
          This specification for the Samsung Galaxy Book 2 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Galaxy Book 2 boardview and Galaxy Book 2 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...
          09-07-2024, 05:50 AM
        • vincentedel
          Samsung SyncMaster 740n Phase Control Issue
          by vincentedel
          Hello,
          I'm having an issue with the Samsung 740n's phase control setting. When I use the automatic adjustment, it sets the value to around 54 (with a range of 0-100), and the picture looks clear and sharp. However, after some time—like after playing a game—the text starts to look blurry. When I auto-adjust again, it may increase the value to 80, and everything becomes sharp once more. Yet, after a while, whether it's a few hours or a day later, the same blurriness returns, and I have to adjust it again.

          I'm using the Samsung 740n monitor drivers instead of the default plug-and-play...
          04-22-2025, 12:33 AM
        • Manucsl
          QE65Q800TATXXC Samsung TV Issue
          by Manucsl
          Hello.

          My TV is a QE65Q800TATXXC Samsung TV.

          Issue : When you plug the 220V, voltages are OK on the power board and you can hear the click from the relay, but TV is not starting when power button is pressed. Red led is blinking when you press power button. But no images or sound ( Back-light is off )
          Then if you disconnect the cable from the main board to the power supply, the TV back-light turns on.
          Any ideas to check would be very appreciated 😊

          After reading some posts on this forum, I suspect an eeprom issue so I bought a CH341A to dump...
          02-19-2025, 07:47 AM
        • FourRunner
          Display issue Samsung TV UA65JS9000W
          by FourRunner
          I purchased a used Samsung TV model UA65JS9000W recently knowing it had an issue with the screen. When switched on the picture was bright both sides of the screen but a little darker in the middle of the screen. Thinking this was the back lights (side mounted LCD strips) I replaced these, however the issue is still there. I am now thinking it may be a TCOM issue, but am not sure, any advice on this would be appreciated. Also whilst changing out the back lights I noticed the the thick clear plastic sheet (maybe 1.5 to 2mm thick) below the diffusers there is cracking (up to 75mm) on the sides and...
          1 Photo
          10-03-2024, 07:05 PM
        • ScHAmPi
          Samsung UE48JU7000 screen issue after backlight replacement
          by ScHAmPi
          Hi all,

          Because of two bright spots and a couple of dark spots I decided to replace the backlights in my Samsung UE48JU7000. See attached photos:


          I thought all went well, but after full assembly and testing it out it turns out not all is fine. The backlights are completely fine but I have some weird issues on the right half of the screen. Since I didn't really touch the T-CON board (apart from taking out the ribbons of the display and reconnecting them on assembly) it would be weird that the issue is with the T-CON board... But based on the behavior of the service...
          The before
          2 Photos
          07-15-2024, 05:41 AM
        • Loading...
        • No more items.
        Working...