I've been asked for a photo of the PCB. Here it is...
Attachment:
DSC_9850.JPG [ 470.38 KiB | Viewed 6168 times ]
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| Need PCB for Hitachi HDS728080PLAT20 http://forum.hddguru.com/viewtopic.php?f=15&t=16077 |
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| Author: | shamrin [ June 13th, 2010, 14:40 ] |
| Post subject: | Need PCB for Hitachi HDS728080PLAT20 |
I need a PCB or a donor drive (with working PCB obviously) for this drive. It's 82.3 GB, P/N 0a30290. The main chip is 0A30153. If you have a part for this, please contact me. /sch |
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| Author: | networkpc3000 [ June 13th, 2010, 16:16 ] |
| Post subject: | Re: Need PCB for Hitachi HDS728080PLAT20 |
hi, have such PCB in stock. please contact me by email or MSN if need. thanks. |
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| Author: | Eric Lee [ June 14th, 2010, 1:21 ] |
| Post subject: | Re: Need PCB for Hitachi HDS728080PLAT20 |
Hi, We have this working PCB in stock, pls contact my hotmail. Thanks Eric |
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| Author: | shamrin [ June 14th, 2010, 11:36 ] |
| Post subject: | Re: Need PCB for Hitachi HDS728080PLAT20 |
I've been asked for a photo of the PCB. Here it is... Attachment: DSC_9850.JPG [ 470.38 KiB | Viewed 6168 times ] |
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| Author: | poehere [ June 14th, 2010, 13:35 ] |
| Post subject: | Re: Need PCB for Hitachi HDS728080PLAT20 |
Note: If planning to change pcb board it will not work each drive has special adaptives stored in this board. They have to be moved or reprogrammed by special tools. |
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| Author: | shamrin [ June 14th, 2010, 13:38 ] |
| Post subject: | Re: Need PCB for Hitachi HDS728080PLAT20 |
poehere wrote: Note: If planning to change pcb board it will not work each drive has special adaptives stored in this board. They have to be moved or reprogrammed by special tools. Really? Well, that sucks. |
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| Author: | fzabkar [ June 14th, 2010, 19:59 ] |
| Post subject: | Re: Need PCB for Hitachi HDS728080PLAT20 |
Measure the resistance of diode D2 near the power connector. If it is shorted, remove it with flush cutters. If there is no other problem, your drive will work without it. Just be absolutely sure your PSU is OK, as you will no longer have overvoltage protection on the affected supply rail. If you need to replace the PCB, there is an S93C76 EEPROM chip at U5 that will (may?) need to be transferred from patient to donor. I believe you should also match the Infineon MCU, p/n UAB-M3057-HT, version V3.3PF-ROM. It appears to contain a mask ROM. |
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| Author: | shamrin [ June 14th, 2010, 21:27 ] |
| Post subject: | Re: Need PCB for Hitachi HDS728080PLAT20 |
fzabkar wrote: Measure the resistance of diode D2 near the power connector. If it is shorted, remove it with flush cutters. If there is no other problem, your drive will work without it. Just be absolutely sure your PSU is OK, as you will no longer have overvoltage protection on the affected supply rail. If you need to replace the PCB, there is an S93C76 EEPROM chip at U5 that will (may?) need to be transferred from patient to donor. I believe you should also match the Infineon MCU, p/n UAB-M3057-HT, version V3.3PF-ROM. It appears to contain a mask ROM. Thanks. It was shorted but removing it did not fix the problem. It looks like there is still a short somewhere. I get a kind of pulsing on the power supply now, that may have been there before unnoticed. |
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