Re: Lenovo Thinkpad P50, no power

Hello,
My reply after quite some time...

So, I tested what you suggested and the capacitors are all OK, so the Intel PCH chip is likely dead.
Such a pity for a laptop which was barely more than 4 years old.

Difficult to find repair services in or near my country, which replace such a chip, and it looks too expensive. In the meantime, I therefore bought a new laptop.
However, I believe the rest of the P50 is still valuable and maybe the motherboard could be used for parts.

...

Re: Lenovo Thinkpad P50, no power

Thanks. I'll try to shift them away from one pad. Given their size it will be tough.

Re: Lenovo Thinkpad P50, no power

Thank you both for your help!

Yes, as said above, there is ~20 V at VINT20.


Aah, those are small components... I attached pictures of them.
I measure 3-5 ohm (R108_1, R109_1, C71_1 etc.). On R31_1 I get a bit more but I think it's due to a bad contact with my probes, which are rather big.
I measure 20.4 kohm on the other side of those resistances, which correspond to their value (to ground).
[B][I]Should I therefore assume that one of the 3 tiny capacitors (C71, C63, C288) or the Skylake...

Hello,

I'm looking for pointers/ideas to find what's wrong with the motherboard of my [B]Lenovo Thinkpad P50[/B].
Motherboard: [B]BP500, NM-A451, VER 1.0[/B]
[B]Schematics & Boardview:[/B] [url]https://www.badcaps.net/forum/showthread.php?t=83484&highlight=NM-A451[/url]

Here is what I know up to now:

The computer was [I]never in contact with liquid, nor dropped[/I].
It suddenly lost power while I was working. It was attached to the [I]docking station[/I], with the battery inside. Not any lights or other sign of life when...

Re: New Members - please post your introductions here

Hello from Switzerland.

I found this forum while I was looking for information about the motherboard of my Lenovo Thinkpad P50, which suddenly failed with no visual sign of life.

Let's see if I can find what's wrong and maybe fix it with the help of this forum.