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T430 LCD in T420 causes wierd issues?

T400/410/420 and T500/510/520 series specific matters only
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Thinkpad4by3
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T430 LCD in T420 causes wierd issues?

#1 Post by Thinkpad4by3 » Fri Jun 16, 2017 5:08 pm

I pluggef my T430s lcd into my T420 since it was fried. I got a strange thing where everything was green, every other vertical line would appear and past that it was ok. it displayed the splashscreen as normal(with the effects stated above) but when I tried it on the T410, it was totally normal.
Thinkpad4by3's Law of the Universe.

The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.

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Re: T430 LCD in T420 causes wierd issues?

#2 Post by TPFanatic » Fri Jun 16, 2017 5:39 pm

The T420's connector might be dirty.
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Thinkpad4by3
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Re: T430 LCD in T420 causes wierd issues?

#3 Post by Thinkpad4by3 » Fri Jun 16, 2017 6:07 pm

TPFanatic wrote:The T420's connector might be dirty.
I would say that but its original LCD works a dream minus the awful TN.

Maybe differences in the LVDS wiring?

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Thinkpad4by3's Law of the Universe.

The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.

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Re: T430 LCD in T420 causes wierd issues?

#4 Post by ji2o0k » Sat Jun 17, 2017 6:10 pm

What cable are you using?

If you are using the T430 screen in the T420 - try using the T420 original cable with the T430 screen.....

I personally thought the T430 and T420 used the same LVDS cable but I gave my buddy my original T430 screen to use in his T420 (since I did the FHD mod) and he couldn't use it with my T430 cable...he had to swap the cable and use the T420 cable (**shrugs shoulder**)

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Re: T430 LCD in T420 causes wierd issues?

#5 Post by hhhd1 » Sat Jun 17, 2017 8:11 pm

you may be using 1600x900 LCD in place of a 1366x768 LCD, and they come with different cables
===

Thinkpad4by3
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Re: T430 LCD in T420 causes wierd issues?

#6 Post by Thinkpad4by3 » Sat Jun 17, 2017 9:53 pm

hhhd1 wrote:you may be using 1600x900 LCD in place of a 1366x768 LCD, and they come with different cables
Thats the answer, sux its not plug and play like on the t6x series. Put a sxga from xga, no problems.

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Thinkpad4by3's Law of the Universe.

The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.

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