没必要问大家收钱吧
早就有了，还要钱？
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/2006.02.17-Changing-headstack-Q-and-A/
跟换磁头好难把学习中 必须 好好学习天天向上
╮(╯▽╰)╭要什么钱
哇~支持下。
哇~支持下。
哇~支持下。
very usefull info
hey u upload garbage word documents