Here you go.
Attachment:
IMG_0553.JPG [ 3.95 MiB | Viewed 7351 times ]
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| PCB replacement for WD400BB http://forum.hddguru.com/viewtopic.php?f=20&t=20036 |
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| Author: | PeskyBit [ July 19th, 2011, 16:56 ] |
| Post subject: | PCB replacement for WD400BB |
I have in a WD400BB (Silver I series according to SD manuals) with a burnt VCM IC. There is no visible EEPROM chip at U12, so the firmware is either in the MCU or all on the platters. Can anyone confirm if the firmware is partially embedded in the MCU and whether a straight donor board swap will work? |
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| Author: | thatdellguy [ July 19th, 2011, 17:09 ] |
| Post subject: | Re: PCB replacement for WD400BB |
Post a picture. |
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| Author: | PeskyBit [ July 19th, 2011, 18:09 ] |
| Post subject: | Re: PCB replacement for WD400BB |
Here you go. Attachment: IMG_0553.JPG [ 3.95 MiB | Viewed 7351 times ] |
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| Author: | thatdellguy [ July 19th, 2011, 18:54 ] |
| Post subject: | Re: PCB replacement for WD400BB |
Simple,  ROM is top left. SD tools will not help you if the PCB is dead. If this is a customers drive, sent it to a professional. 
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| Author: | PeskyBit [ July 21st, 2011, 13:40 ] |
| Post subject: | Re: PCB replacement for WD400BB |
Cool, thanks man. I'll just have move the U2 chip over to a donor board. Totally forgot about U2! Hadn't seen one in a while. |
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