This is the PCB board (circuit board) of a Seagate Momentus Hard Drive

Item Information

Model: ST9750420AS
P/N: 9RT14G-500
Firmware: 0001SDM5 - Please read "The Process" -->
Board #: 100675229
Capacity: 750GB

The Process

  1. Locate the number imprinted on the edge of your PCB board (the side with no chips), it must say 100675229
  2. If this is a match, then we can make a clone of your board.

To make the clone, we will need you to fill this form, then ship your DAMAGED circuit board to us. We will copy the firmware from your PCB onto our PCB, then ship the working cloned PCB back to you. (Click here to find out more.)

This process is necessary to ensure compatibility, most newer HDD PCBs have UNIQUE calibration data in the firmware, and is therefore impossible to match without a firmware transfer.

When to buy this item: If there was a power surge, or some components are obviously burnt, or the wrong power adapter was used to power up the drive, the chances of success with replacing the PCB are quite good. If you would like to describe the specific symptoms to us, please contact us through our online form or on eBay, we will try our best to reply within 12 hours.

Item Includes: circuit board, firmware transfer, installation instructions

Additional Information

What this board is supposed to do for you:
If your hard drive has stopped working, chances are you have some important data stored on it. Sometimes the hard drive failure is caused by a circuit board failure. This product is made to be an identical and functional replacement for your circuit board, therefore repairing your hard drive and saving you expensive data recovery charges. Please note that hard drive failures are NOT always caused by circuit board failure, this board is not guaranteed to fix your hard drive.

Please Note:

  1. This is just the board, not the whole hard drive.
  2. All boards have been fully tested before shipment, there is no refund policy, but we do offer exchanges.
  3. Items that require a firmware transfer will not be shipped out until we receive your old board, and complete the transfer.
  4. To ensure compatibility, please follow the steps listed above carefully.

Our Testing Procedure and FAQs

Click here to find out about our testing procedure and general FAQs

Shipping Policy

Items that do not require a firmware transfer are shipped within 1 business day. Items that do require a firmware transfer will be shipped in 1-2 business days after receiving the old board.

Regular shipments are sent out by Canada Post Light/Small Packet, shipping time estimates are listed below.

Region Cost Time*
Canada FREE 2-6 Business Days
United States FREE 4-10 Business days
International FREE 6-10 Business Days

*Estimated shipping time only. Express options using UPS express is available to most locations as well, please contact us if you require express shipping.

International shipments

Around half of our customers are from outside of North America, and half from within. Thank you all very much for your support. As a result, we have extensive experience shipping worldwide. Due to the low value of the item, customers in most countries DO NOT have to pay any duty. If you do have to pay duty, please send us a photocopy of your receipt, and we will reimburse you for the amount you paid.

To see a map of some of locations we've shipped to, please click here.

Closing Comments

Thank you very much for taking the time to look at our site. Remember, if you have ANY questions or concerns, please contact us here or on eBay. We reply 99% of all emails/messages within 12 hours of receiving them. Thank you again for looking at our site and best of luck repairing your hard drive