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T430s-T420s LED sub card Swap

T430-T490, T530-T590 Series
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Wolfman_Jack
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Joined: Fri Mar 14, 2014 11:15 pm
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T430s-T420s LED sub card Swap

#1 Post by Wolfman_Jack » Sat Jul 01, 2017 10:55 pm

Firstly, I'm Wondering if anyone has tried installing a T420s LED sub card (04W1696/04W1697) in a T430s (04W3934). The goal being to get a dedicated bluetooth LED indicator.

I have the parts to try it, so if no one else has tried it, I'm wondering if someone could tell me what's the worst that could happen if I were to try it?

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Re: T430s-T420s LED sub card Swap

#2 Post by RealBlackStuff » Sun Jul 02, 2017 6:26 am

As per T420s-HMM and T430s-frubom, they both list the same LED sub card 04W1696.
The T430s also lists the 04W3934, which is called a LED BOARD there.
They look almost identical, except T430s/04w3934 is missing LED1.
Run without the T430s LCD-bezel first, it might not have a hole for the BT LED (the missing LED1?).
Worst case: you blow either the LED-board, or the LCD, or even the motherboard.
But my guess is: it should work.
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Wolfman_Jack
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Joined: Fri Mar 14, 2014 11:15 pm
Location: New Haven, CT

Re: T430s-T420s LED sub card Swap

#3 Post by Wolfman_Jack » Sun Jul 02, 2017 2:53 pm

Update: I tried it and (a) nothing blew up; (b) it works!

Thinkpad4by3
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Re: T430s-T420s LED sub card Swap

#4 Post by Thinkpad4by3 » Mon Jul 03, 2017 6:41 am

Wolfman_Jack wrote:Update: I tried it and (a) nothing blew up; (b) it works!
(C) Jamie was disappointed

Jamie want big boom.

For real, good to know for future ref. I got a dead T430s laying around with fried mobo.
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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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