Cracked IHS On Macbook Pro Logic Board

[jamman1125]

Hi all,

Ive made an account here to ask for some advice on this very specific problem. Ive been doing some searching and cant find a case the same as mine so im hoping someone with some good CPU knowledge can help out.

So I took my mac into a local repair shop a few weeks ago to get repaired, but they gave it a go and said the repair is not viable for the amout of time it would take to fix it. As it was a short on the Logic board and they had already swapped out a few components. So i decide to buy a new logic board and fit it myself.

I took delivery of a new logic board today to fit it, and when i got my old logic board out, i see there is a crack in what i think is the IHS, exposing the actual DIE on the CPU. Now i know for a fact before i took the mac in, it didn't have this problem. I find it rather strange as to how that could have happened? My only guess is that it could have cracked from extreme heat whilst they were reflowing the board or changing out other components?

I can almost bet they will try to blame the damage on myself whilst i was installing the new logic board, but have i got grounds to say there is no way i could inflict that damage without applying heat or extreme force to the CPU?

Thanks in advance for your insight.

Cheers!

 

[jamman1125]

I have photos of the board before it went into them

 

[jamman1125]

Yes it clearly shows its intact without the crack.

 

[jamman1125]

My main thoughts were that I would almost have an inability to inflict such damage on the board without having equipment that they own. I understand its almost impossible for me to prove it was them that caused the damage because it isnt damage that could be clearly seen upon receiving the item back from them.

My complaint is that this de values the logic board as a part for spares or repairs significantly, without the cpu damage i could have sold it for around £180, with the damage its anyones guess.

 

[jamman1125]

Starshock is right, I looked on the Intel website the other day and realised it is the CPU DIE.
I took it into him the other day, and he was as shocked as I was to see it. As an investigation into how it happened, he got another board with a similar chip and tried to smash it, but it just wouldn't crack not matter how hard he jabbed it. The only way we got it to crack was to heat it up before, then smash it hard. I'll put up a photo in a minute.

 

[jamman1125]

Here's a photo, if it's worked

 

[jamman1125]

Yes pretty much the whole top is missing. And an important thing to note is that the heat sync does not really sit on the GPU at all, only the actual CPU. The thermal paste is from where I showed the technical, and he started poking it. It's from a mid 2014 MacBook Pro.