硬盘磁头更换技巧(绝招、实用)

yanglu · 发表于 2011-4-27 15:25:16

没必要问大家收钱吧

jony75 · 发表于 2011-5-18 20:01:16

早就有了，还要钱？

redsky991 · 发表于 2011-5-30 19:46:56

回复 1# chengjinle

Nowadays, when computer industry is developing way too rapidly, manufacturers are literally “forced” to keep up to date — which can sometimes lead to putting “raw” (unfinished) devices on the market. This tendency makes a definite negative impact on product’s quality. Unfortunately, a hard disk drive industry itself is not an exception. With huge sales volume and poor quality, hard drives are eventually “making friends with troubles” (e.g. when the system is unable to detect the drive and so on)... There are cases when drive starts clicking or makes raspy or hissing noises — in 70% cases it means a “dead” head or preamplifier. In this case a surgery — head stack replacement or preamplifier re-soldering is needed.

What is a preamplifier?

It is a small chip, located on a head stack. In old hard drives the preamplifier is usually multi-pinned; new models are made with an open-frame type of preamplifiers that attached either by using conductive adhesive directly on contact areas or by soldering accordingly to BGA principles
for more info get free knowldges http://hddguru.com/articles/2006 ... -headstack-Q-and-A/