PCB failures (Such as Toshiba PCB G4311A) affect thousands of hard drives every year and often result in permanent data loss. A hard drive may suddenly fail to power on, and a computer may not detect that it is plugged in. Some failed hard drives will also show up in computer BIOS with incorrect brand/model information. PCB failures can also cause physical issues such as read/write head failures, and many PCB failure symptoms overlap with the symptoms of other physical hard drive issues.

Some emails from customers of Toshiba PCB G4311A failures are listed below, along with tips for replacing & repairing.

Toshiba PCB G4311A Failures:

Q: Toshiba MQ04UBF001 G4330A PCB

Hello everybody I have an external USB 30 Toshiba drive 1 TB MQ04UBF100 with PCB G4330A Customer said he drop it The drive is clicking and not recognized (not even by Disk management) We went ahead and replace the PCB for a SATA compatible G4311A (thanks to you guys!) The ROM chip was also replaced We also got an exact match for a donor drive (an external USB 30 Toshiba drive 1 TB MQ04UBF100 with PCB G4330A) for head replacement- The hard drive doesn’t click anymore, the MRT application

Q: TOSHIBA G4330A PCB REPLACEMENT

forums, including this ( Toshiba MQ04UBF001 G4330A PCB , among others), I have not yet reached a conclusion from what I learnt, I think about two possible solutions 1) Replace the PCB For either USB or SATA compatible PCB (G4330A -> G4311A, USB to SATA, took from here Toshiba USB to SATA Guide ) The point is that I’m not sure wether it is plug and play, or it requires further manipulation as some posts suggest If PCB replacement is a simple issue, then I would go for this solution

Replacement Toshiba PCB G4311A:

To repair a failure board, the simple way is swapping the failure board with a replacement board. Donor boards on HardDriveParts.com are listed below:

• Toshiba MQ04ABD200 PCB Board G4311A
• Toshiba MQ04ABF100 PCB Board G4311A
• Toshiba PCB Board G4311A