Any way to mitigate ripple pattern when swapping LCD backlight strip to LED ?

[fri_night_in_ninsei]

Hi. I just did an LED backlight swap on my X61s. Sooo much brighter and whiter. But I do get a ripple pattern on the bottom of the screen from the individual LEDs (as opposed to the original tube). Any techniques to mitigate that ripple pattern?

[flyingfishfinger]

Yeah, you can / should insert a diffuser strip above the LEDs.

You mean you're seeing this, right?

If you're using Monty's daylight kit they're included, otherwise you can use a similar material.

Read here, specifically under Shims and the differences between the Original and Daylight kits.


Good luck,
R

[johnbuhan]

What I see is more broad ripples. It's not concentrated at the bottom:

https://i.imgur.com/b1NWKBW.jpg

Is that normal? Did I put it in too tightly?

It's not an SXGA screen.

[flyingfishfinger]

Those look more like pressure spots, but someone with more experience in the display area should confirm that.

R

[johnbuhan]

Hm, they only really became noticeable after the LED mod, but I can't be certain.

[Thinkpad4by3]

Wouldn't surprise me if the LED "chips" are causing the pressure...hence appearing as the backlight is causing the ripple.

[johnbuhan]

Is there any way to fix that? I'm thinking of putting in an accordion shim to see if that will help, or maybe just try to put them in even looser. Unless that's permanent damage.

[Thinkpad4by3]

I'm 99% sure that's not permanent damage.

[Geartooth]

Same issue with my X61 Samsung. Haven't bothered to try and fix it yet.

[johnbuhan]

It's good to know someone else has this issue as well. Do you know of any known ways to fix this? Otherwise I'm just going to try to make an accordion shim and see if that fixes it.