Best example ive found was with my laptop,an ASUS which after dropping it i decided to see if parts were about to fix it.After some searching i came across a large computer forum,with a hole section on ASUS.
it seems that anyine in the uk getting a warrentie repair or payed for repair had to send there laptop to a scottish company for the work to be undertaken.
going by the posts 80% of the computers sent for repair came back in worse state than before, with more broken parts or worse parts instaled,than when they went away.this also took weeks/months for a turn around to recieve there laptops back.
there were at people that complained or needed full replacements and had there laptops sent to holand to the main repair centre,these people waited months 3+(1 was till waiting after 6+) to get there supposed new laptop ,which inturn ended up being there origional for many people,just with new parts,again some being returned damaged/faulty.
then the other side of the story was users in the us.
they sent there laptop off or took them to repair centers and had new parts fitted for free that they should have payed for and uk customers payed for.
they were returned with in hours at centres and days when sent away
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as for asia,my laptop was bought in china,on my last holiday there we went to a large computer store,with all the brands they were going to repair it out of warrentie for around £40 at the asus shop,where as i was quoted £100s here,and would have only spent slightly more getting a new one.