The main reason we don't repair modern electronic appliances is that
the cost of parts and labour to carry out the repairs is often nearly
as much (or more) than the appliance cost new. Why would anyone pay
for a repair on an item, which may be as good as new when repaired,
when a brand new item may only cost a little more. The new item also
comes with a new warranty.

YET despite that, there is still some favorable economics for
reclaiming and repairing stuff, even if it's sold as "refurbished".
I occasionally buy refurbished stuff since that means
"the parts that break first have already been replaced".
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-- mejeep deMeep ferret!