PC Monitor Display Vertical Thin Color Lines - Page 1
Forum section: electronics / repair

author: 2X
author_rank: Frequent Contributor
timestamp: July 01, 2024, 04:34:17 pm
content: Hello, I have a monitor (no name... the label on it was scratched) when sometimes at the opening shows vertical color thin lines.First when I turn off and turn on the screen the lines dissapear orSecond if I leave open the screen after 3-5 minutes the lines gone.I measured the voltages at the below tables when there are no lines displayed and when the lines are present and but all the voltages was the same.I moved back and forth the connectors and the COF tabs but the vertical lines didn't displayed with any movement.I brushed all the connectors with IPA.Do you believe that these thin vertical lines it is from the degrade of the panel (new panel if I find) or from a bad component?

author: Harry_22
author_rank: Frequent Contributor
timestamp: July 01, 2024, 06:47:51 pm
content: Hi!Could you attach the photo of vertical lines you mentioned.

author: 2X
author_rank: Frequent Contributor
timestamp: July 01, 2024, 07:16:19 pm
content: Quote from: Harry_22 on July 01, 2024, 06:47:51 pmThanks for your reply.

author: 2X
author_rank: Frequent Contributor
timestamp: July 02, 2024, 08:32:36 am
content: Quote from: Harry_22 on July 01, 2024, 06:47:51 pmWhat is your opinion. Is this monitor repairable or there is problem of the panel and can't be repaired?

author: vidarr
author_rank: Frequent Contributor
timestamp: July 02, 2024, 05:28:54 pm
content: This happened to one of my ASUS monitors that was still under warranty. I sent it in for repair and they decided it was more economical to just send me a new monitor.You have to decide how much time it is worth to fix the monitor.

author: Harry_22
author_rank: Frequent Contributor
timestamp: July 02, 2024, 05:43:31 pm
content: It was a problem with my monitor when the flat cables started coming off. You also have NEC monitor and it has the same TABx named cables. But you have colored stripes all over the screen while mine were like pillars.Try pressing the cables with your finger and see the result.

author: 2X
author_rank: Frequent Contributor
timestamp: July 02, 2024, 07:21:28 pm
content: Quote from: Harry_22 on July 02, 2024, 05:43:31 pmI have press them and will press them again and I will tell you the results. Do you believe that the problem is on connectors CN100 & CN101 or in COF tabs. If the problem are in connectors CN100 & CN101 maybe it will help to soldering each pin/crimp with little solder?Thanks again both of you for the replies.

author: Harry_22
author_rank: Frequent Contributor
timestamp: July 03, 2024, 11:13:24 am
content: The problem was here.When heated the contacts in the gluing began to move away.But you have these lines all over the screen. Does it show the image through the lines?

author: 2X
author_rank: Frequent Contributor
timestamp: July 03, 2024, 06:22:27 pm
content: Quote from: Harry_22 on July 03, 2024, 11:13:24 amYes it shows the image through the lines and when the time passes the lines fade out gradually and after approximatelly 5min dissapeared at all.

author: 2X
author_rank: Frequent Contributor
timestamp: July 03, 2024, 06:39:55 pm
content: Quote from: Harry_22 on July 03, 2024, 11:13:24 amDid you resolder it like this?

author: Harry_22
author_rank: Frequent Contributor
timestamp: July 04, 2024, 07:56:48 pm
content: I tried but the film was warped by the soldering iron.