Help - Horizontal Rows of "White" Pixels - T41p

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djpharoah · #1 Post by **djpharoah** » Sat Aug 19, 2006 8:27 am

This morning I turned on my T41p and found that I have 2 horizontal rows of white pixels. This occurs near the bottom of my screen and I noticed it because my windows panel was behind it.

I hope they arent dead pixels cuz that would suck majorly, but seeing as they are only white what could be the problem?

Any ideas??

thanks

JHEM · #2 Post by **JHEM** » Sat Aug 19, 2006 9:20 am

Try reseating the video cable on the MB.

Never seen/heard of this before on the T41p, still under warranty?

James

djpharoah · #3 Post by **djpharoah** » Sat Aug 19, 2006 9:25 am

JHEM wrote:Try reseating the video cable on the MB.

Never seen/heard of this before on the T41p, still under warranty?

James

Im running a PSP Dead Pixel program.

Will try reseating the cable this weekend.

semaj · #4 Post by **semaj** » Sat Aug 19, 2006 11:14 am

hope it is still under warranty. if it isnt ibm would charge 595 for the screen and invertor, and 895 for the motherboard to replace. Maybe less now since it is jist a t41p board and not the newer one.

tselling · #5 Post by **tselling** » Sat Aug 19, 2006 12:11 pm

I've never seen this either. Did you see it on bootup before it got to windows or only in windows? Reseating the video cable if you see it when booting sounds like a good idea.

semaj · #6 Post by **semaj** » Sat Aug 19, 2006 12:13 pm

sounds stupid but reset the ram also

#7 Post by **Kyocera** » Sat Aug 19, 2006 12:17 pm

doesn't sound stupid to me

, ram is important in the chain of troubleshooting weird problems.

djpharoah · #8 Post by **djpharoah** » Sat Aug 19, 2006 12:19 pm

well guys - i tried to reseat the cable and no effect.

The horizontal line still exists.
EDIT the screenshot doesnt seem to show the line.

Running the psp software did get rid of one of my original two lines. I just pray that the second one goes too.

djpharoah · #9 Post by **djpharoah** » Sat Aug 19, 2006 3:40 pm

Anyone else have any other ideas??

I tried starting up the laptop and pressing the area of the stuck pixels. However I wasnt too sure if that was going to do more damage than good.

So now Im looping the PSP pixel movie fullscreen for about 1 hr and might leave it on over night.

My beautiful lcd.......<sigh>

semaj · #10 Post by **semaj** » Sat Aug 19, 2006 3:58 pm

run pc doctor from ibm's site. that will tell you what component is bad. Once you have that you can go to ibm and have them replace that or know what to replace if not under warranty. It could be the invertor or the lcd or even the video card. I just replaced mine.

tselling · #11 Post by **tselling** » Sun Aug 20, 2006 1:46 pm

Have you plugged in an external monitor? I generally always do that with video problems to rule out the motherboard.

Also can you post a screen shot of it when booting up (ie on the Thinkpad logo screen before you get to windows)?

djpharoah · #12 Post by **djpharoah** » Mon Aug 21, 2006 12:54 am

tselling wrote:Have you plugged in an external monitor? I generally always do that with video problems to rule out the motherboard.

Also can you post a screen shot of it when booting up (ie on the Thinkpad logo screen before you get to windows)?

Actually posting a screenshot wont do much since the screenshot appears perfectly rendered. Its the hardware output that leaves out the pixels.

semaj · #13 Post by **semaj** » Mon Aug 21, 2006 11:52 am

a screen shot would determine if it is a video card problem or screen problem

djpharoah · #14 Post by **djpharoah** » Mon Aug 21, 2006 1:06 pm

semaj wrote:a screen shot would determine if it is a video card problem or screen problem

Well I took a screenshot and the anomoly doesnt show up on it. That means its the display that is acting up.

smugiri · #15 Post by **smugiri** » Mon Aug 21, 2006 2:05 pm

I have just aquired the same problem - I have a vertical green line of pixels though and they do not show up in a screenshot.

[edit]
Here is a second snapshot of the same thing with other stuff going on. The line is exactly one pixel wide and the problem is intermmitent: if I flex/twist the screen a couple of millimeters, it goes away.

Most of the time, its not there but even when it shows up, it is not as irritiating as I thought something like this would be: I think the fact that the machine is SXGA+ helps.

Still trying to figure out if this problem is worth the stress of opening up the machine to re-seat the cable - warranty expired about 2 months ago. Its is definitely a display issue and not a card one and is definitely repairable (since flexing the screen puts things back to the way they should be).

[/edit].

djpharoah · #16 Post by **djpharoah** » Mon Aug 21, 2006 5:00 pm

smugiri wrote:I have just aquired the same problem - I have a vertical green line of pixels though and they do not show up in a screenshot.

DUDE!!

I have the same problem except my line is blue-ish now and horizontal. the psp video has changed the line from white to bluish.

WHAT IS HAPPENING!!

semaj · #17 Post by **semaj** » Mon Aug 21, 2006 6:32 pm

djpharoah wrote:
semaj wrote:a screen shot would determine if it is a video card problem or screen problem
Well I took a screenshot and the anomoly doesnt show up on it. That means its the display that is acting up.

correct

djpharoah · #18 Post by **djpharoah** » Mon Aug 21, 2006 6:58 pm

So now that I have determined the LCD is at fault, why did suddenly 1400 pixels get screwed?

luns · #19 Post by **luns** » Mon Aug 21, 2006 8:31 pm

djpharoah wrote:So now that I have determined the LCD is at fault, why did suddenly 1400 pixels get screwed?

You have to realize that the pixels aren't addressed individually - you'd need millions of wires coming off the panel to do that, and it just ain't so. The electronics driving the panel accesses each pixel by row/column. In this case, the circuitry associated with one row of pixels is bad.

Nothing you do in software will help, nor will any reseating of cables, checking RAM, or anything else - this is entirely within the panel unit. Problems with the cabling between motherboard and panel will be much more acute, affecting either half, or all of the screen, not just one row of pixels.

Given your panel responds to flexing, the problem is pretty much certain to be a failed bond, between the glass panel and the driver circuitry. You might deliberately arrange to somehow stress the panel (it'll be right at the edge of the screen where the row of bad pixels ends) in just the right way to keep the bond pressed together, but it's still a bad connection and will only get worse with time, not better.

There are places that do re-bonding, but the prices are on the same order as what you'd pay for a used replacement panel.

Help - Horizontal Rows of "White" Pixels - T41p

Help - Horizontal Rows of "White" Pixels - T41p

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