一個(gè)希捷80G死硬盤(pán)的修復（轉）

一個(gè)希捷80G死硬盤(pán)的修復（轉）

Fixing a dead Seagate 80gb drive
In case this helps someone else:

A colleague was given a broken PC. They were told that the power supply had blown, and the owner decided to buy a whole new PC rather than bother to fix it. I was asked to to try to get it to go. I tried a different ATX power supply and after some false starts I got most of the PC going again. It had two internal drives; a 10GB IBM drive plus a Seagate 80gb (ST380023A Barracude V). One thing I did find was that even with a new ATX PSU, the PC would not turn on with just the power of the 80gb drive connected. There was something seriously wrong with the 80gb drive. Anyway, I returned the PC and said both the power supply and the 80gb drive were broken, so they'd at least have to get a new PSU. I kept the 80gb drive since it was 'junk'.

But I was quite curious about the 80gb drive. I measured across the power connector. Between +5V and GND was some resistance, but +12V to GND seemed like a short circuit. Fortunately I actually had a working Seagate ST380023A Barracude V drive in another machine, so I pulled it out to compare. Interestingly this drive was bought from the same shop during the same month (per the warranty sticker) and had the same firmware version, but the logic boards were actually slightly different. Anyway, on my working drive, I traced where the +12V line went and found a few things it connected to. One of these was a little black square with markings BUX C240 with two pins on it (which I think is a diode). Its down near where the Power supply connector comes in. By desoldering one end of this from the dead hard drive, I could see that the short circuit between +12V and GND was removed. I have a diode tester on my multimeter and I could see that the BUX C240 was shorted out. My working 80gb drive had a similarly placed black square which I could see was not shorted out. It had the markings BUF C242 I think. I then scrounged through my junk pile and found an old 630MB hard drive that was dead and desoldered a diode from it (well I think it was a diode - it was a black square with a line on one end and had two pins on it). I can't remember what the markings were. I soldered it in place of the BUX C240 on the dead drive making sure the line on the packaging was oriented the same way.

I then powered it on and suffice to say it now works perfectly. I have been told by more wise electronics experts that the diode may be a zener diode to provide over voltage protection and that my generic replacement might not protect it from over voltage ... but hey it works for now.


Update (Dec 2004)
I came across a Seagate 40gb drive in an online auction advertised as:
   Was working one day then stopped during a storm - never to go again

Of course, I had to bid on it to see whether it had the same seized diode fault ... didn't I? Well, NZ$7.50 later I had said 40Gb drive. This time it was shorted out between +5V and GND. Between +12V and ground was fine. Poking around with my multimeter I soon found a diode that was shorted. I replaced the diode and the drive seems to work fine now. Too easy.

看不懂
  不知道是什么  

看不懂,俺可不是文化人

看不懂

english ,

   衰~

修理死了的Seagate 80gb開(kāi)車(chē)
以防這幫助另外的某人:
一位同事被給壞掉的PC。
他們被告訴電源已經(jīng)刮，并且主人決定了而不是麻煩給全部買(mǎi)新PC修理它。
我被問(wèn)到試著(zhù)讓它走。
我試用了不同的ATX電源并且在一些不成功的開(kāi)始以后我得到了再走的PC的大多數。
它有了2內在的開(kāi)車(chē);
加一Seagate 80gb的10GB IBM開(kāi)車(chē)(ST380023A Barracude V)。
我確實(shí)發(fā)現了那的一件事情是甚至與一新的ATX PSU，與驅動(dòng)器連結了的80gb的只是權力PC將不開(kāi)。
有隨80gb開(kāi)車(chē)嚴重錯誤的一些東西。
不管怎樣,我返回了PC并且說(shuō)電源和80gb開(kāi)車(chē)被打破,因此他們不得不將至少得到一新的PSU。
自從它是我堅持了80gb開(kāi)車(chē)“垃圾”。
但是我是關(guān)于80gb相當好奇開(kāi)車(chē)。
越過(guò)權力連接器我測量了。
在+ 5V和GND之間是一些抵抗，但是象一條短路一樣到GND的+ 12V似乎了。
我實(shí)際上幸運地讓了一工作的Seagate ST380023A Barracude V在另外的機器開(kāi)車(chē),因此我外面拉了它比較。
從同樣的的商店在同樣的的月期間這開(kāi)車(chē)有趣地被買(mǎi)(每擔保滯銷(xiāo)物)并且有同樣的的韌件版本,但是邏輯板是實(shí)際上稍微不同。
不管怎樣,在我的工作的開(kāi)車(chē)上，我在+ 12V行去找了它連結了到的一些事情的地方跟蹤了。
這些的之一是有有在它上的2枚大頭針的標記BUX C240的稍黑的平方(我認為它是一個(gè)二極管)。
它的下面在在哪兒附近電源連接器進(jìn)來(lái)。
到從死了的硬盤(pán)的這的desoldering一結束為止，我能看見(jiàn)在+ 12V和GND之間的短路被移開(kāi)。
在我的萬(wàn)用表上我有二極管考試者并且我能看BUX C240 shorted外面。
我的工作的80gb開(kāi)車(chē)有了我能看見(jiàn)的一個(gè)同樣被放置了黑平方外面不是shorted。
它有了我認為那的標記BUF C242。
通過(guò)我的垃圾堆積我那時(shí)搜尋了并且從它發(fā)現了是死了的一塊舊的630MB硬盤(pán)和desoldered一個(gè)二極管(很好我認為它是一個(gè)二極管它是有在一結束的行的一個(gè)黑平方并且在它上有了2枚大頭針)。
我不能記得標記是什么。
代替BUX C240在死了的開(kāi)車(chē)上我錫焊了它在包裝上確信行是面向的同樣的的方法。
我那時(shí)產(chǎn)生動(dòng)力它上并且足以做說(shuō)它現在完美地工作。
我被二極管可以是一個(gè)禪宗二極管電壓保護上提供并且我的普通的代替可能不阻止它超過(guò)電壓的更明智的電子學(xué)專(zhuān)家已經(jīng)告訴...
但是嗨它為現在盡力。
校正(2004年12月)
在被做廣告了作為的一次聯(lián)機的拍賣(mài)我碰到了Seagate 40gb開(kāi)車(chē):
有天正在工作然后在暴風(fēng)雨期間停止了永不再走
當然,我不得不求包它審實(shí)它有了同樣的抓住的二極管過(guò)錯...
我？
很好,以后我已經(jīng)說(shuō)的NZ$7.50 40Gb開(kāi)車(chē)。
這次它shorted外面在+ 5V和GND之間。
在+ 12V和地面之間是杰出的。
用我的我快發(fā)現了一個(gè)二極管那那的萬(wàn)用表到處尋找shorted。
我代替了二極管并且開(kāi)車(chē)似乎現在工作正常。
太容易。

啥呀亂了吧唧的

樓上的翻譯的太好了，還是看不懂，呵呵

暈啊，難懂啊

俺可不是文化人

翻譯的太好了，還是看不懂，呵呵

看不懂請高人給翻一下吧

俺可不是文化人

想學(xué)習一下，但看不懂，

那個(gè)翻譯就軟件翻譯的，看懂了才怪
軟件翻譯普通的還成，專(zhuān)業(yè)的就不用想了

看不懂！翻譯不來(lái)！無(wú)奈！

餓~~~~什么跟什么都不知道

kanbudongya

支持哈大哥！