No POWER at all / No blinking led

[ED Zayann]

Hello Everyone,

My T420S was working just fine when suddenly, after I believed was a good charging, NO POWER ON, and no blinking led (battery charging indicator).

I took of battery, pressed 30seconds power button, plugged, still no reaction at all.

So, does any one has ever experienced a sudden DEATH of a T420S and could it be the Power connector jack / board that would need replacement ?

I have tried the power supply on a T420 that doesnt power on either (i!) AND it makes power supply led blinks so it works.

I didnt test the voltage but I doubt it could be that...

Thank you for any suggestion !

(I found the T420S on eBay 2 months ago to replace the "NO power on" T420 that I could never resucitate despite changing the CMOS battery with NEW one, on the same delivery to central America with the T420S)