How can Apple tell that the liquid damage in my mac air was made by me?

Nobody here can really help you, although yes, there usually are small indicators which permanently change colour when damp.

Even without a spill, condensation can form inside a computer and cause problems such as those in your pictures.

But, if you're confident that there were no spills, & no cold computer in warm environment... you should speak to Apple's customer service.

I understand your point. You did not expose your computer to liquid. However, the computer clearly has liquid damage. That is what is being identified by Apple. You didn't do it, but someone did. If you wish to dispute the findings, you can ask to speak to the store manager, or as andyBall_uk said, call applecare support.

this:

Did not exist at the point of delivery to the consumer.

Nor did the white corrosive agent present exist at the point of sale.

" exposure of copper alloys to moisture or salt spray will cause the formation of blue or green salts called verdigris. The presence of verdigris indicates active corrosion."

I see also 2 contact points with DEEP corrosion pitting not indicative of any defect from the factory.

I can see the Original Poster's point. The location AND the extent of the corrosion appears to be not consistent with contamination after manufacturing.

The particular location is the video/logic board connector, on the solder side. That area is ordinarily protected by an adhesive tape strip. I'm thinking that for water or dondensation to have infiltrated or formed the area would be far more pronounced on the edges of the tape strip. Any damage to the actual soldered portion would have damaged a greater area than shown.

I know speculation is not allowed here, but the damage would be more consistent with a sweat drop on that portion of the logic board, then covered/trapped by the tape strip. Underneath the strip, the damage would have produced the contained corrosion seen here. Such damage would have occurred during manufacturing or during a logic board swap, if it ever had one.

I don't press this conclusion, but it should be considered. The size of the corrosion area is what is perplexing. It looks like very localized damage. aon an area not prone to condensation.

Here is a pic, with the strip in place.

If It wasn't you that spilled liquid inside your Mac you should ask the person who did to pay for the repair.

Clearly there has been an ingress of liquid.

thats clear spill damage, however it doesnt appear to be water as originally spilled.

folks often forget that condensation damage can also happen WITHOUT a spill to create water damage.

If your speculation is that someone on the assy. floor spilled his/her drink during manufacture..............

😉 no

If it was a refurb at sale point...., theres a chance there. Otherwise. no.

SPFORSYTHE said:

but the damage would be more consistent with a sweat drop

agree, completely. Looks exactly like sweat salts

winterwy wrote:

HI Csound1,

I believe that this is manufacturer faults.

Then take it to an Apple Store and argue your case, politely. (as you have here)

winterwy wrote:

I believe that it is manufacture defect.

And I believe it was an accident involving a human being.

Either way it's not relevant, Liquid Damage is not covered by warranty.

I see obvious green copper oxide corrosion.

meaning it cannot be Mfg. defect, that takes a good time to form and only from a spill or condensation.