Is it worth to buy second hand electronic Gadgets?

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What decides life of the Electronics PCB? Can we buy second hand gadgets? Watch it to get the answer..
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00:00 - Intro
01:10 - What decides Life of Electronics
01:38 - 1. Quality
03:59 - 2. Temperature
06:15 - 3. Ageing
07:30 - 4. ESD
10:40 - Is it worth to buy second hand gadgets?
12:12 - End
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