Results 1 to 6 of 6

Thread: LCD display issue

  1. #1
    New Member
    Join Date
    Jan 2014
    Location
    United States
    Posts
    14

    LCD display issue

    On my new build, my display is not showing all the 'pixels'. Half of the top row is out, and it looks like part of the left side of the display as well.[IMG][/IMG]

    I touched up the connections, but it's still happening. Is this just a reflow issue, or something more major? Any ideas?

    Thanks,
    Jon

  2. #2
    TVWBB Wizard
    Join Date
    Apr 2011
    Location
    Puyallup, WA
    Posts
    1,593
    It could be any number of issues. Check your connections on LCD, make sure you don't have any solder bridges connecting pins together. Check the shift register for the same. Post some close up pictures of the top and bottom of both boards.

  3. #3
    TVWBB Wizard Steve_M's Avatar
    Join Date
    Jul 2013
    Location
    Toronto
    Posts
    1,962
    My guess would be the display itself is faulty. I would assume you’d be able to see all of the pixels that make up the 16x2 display.

  4. #4
    TVWBB Platinum Member Bryan Mayland's Avatar
    Join Date
    Apr 2010
    Location
    Tampa, FL
    Posts
    4,471
    Oh yeah that display is definitely borked for some reason. They're supposed to be QCed at the factory so I'm not sure how this sort of thing could slip by, but it is the *second* LCD I've seen like that in 3 years of selling kits. I was looking into some cheaper LCDs in other sizes and forms and was surprised to see that manufacturers were quoting something like 1.5% cosmetic defective rate and 0.4% non-functional defective rate. That seems pretty high to have 1 out of every 250 non-functional.

    In any instance, I can send you out a replacement LCD/Button board and all the parts. You'll have to resolder the whole thing but I think it will be a lot quicker than trying to desolder just the LCD to replace it. I'll email you about getting it out to you.
    I'm that HeaterMeter guy what ruins everybody's free time.

  5. #5
    New Member
    Join Date
    Jan 2014
    Location
    United States
    Posts
    14
    Thanks a lot...I appreciate it.

  6. #6
    TVWBB Fan
    Join Date
    Oct 2015
    Location
    Minnesota
    Posts
    148
    My display worked great for a couple years and now there's a single line missing across.
    It happened after I left it in the rain overnight (and powered on all night).

    I suspect yours didn't get wet since it's a new build.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •