I believe I need to pass this on to someone.
After some work on the circuitry, the hardware is recognized but the storage is not. The Deepspar identifies the model, etc but shows 0 capacity. I've determined that the controller chip is likely the culprit.
Typically I'd try a different controller chip or transplant the flash memory chips to a donor flash drive. Well this one's so old that I can't find a donor. Or an exact match for the controller chip.
The controller is a Phison PS2233-F. I have many flash drives with very similar component layouts, values, same capacity flash memory chips, etc but they use a Phison PS2251-65. I found a datasheet for this controller but not the PS2233 so am unable to compare them to see if they might be compatible. And I don't want to throw a 2251 on there and potentially damage the flash memory chip.
Can anyone verify if these 2 controllers might be compatible for this configuration?
If not, or if I can't find a datasheet for the PS2233 to verify for myself, would someone with a flash reader/extractor like to take on this recovery? It might be a relatively straightforward one: a total of 2 documents need to be recovered and after the recovery there would be no need for return shipping--files can be transferred electronically. Also, it would need to be completed by April 23.
After some work on the circuitry, the hardware is recognized but the storage is not. The Deepspar identifies the model, etc but shows 0 capacity. I've determined that the controller chip is likely the culprit.
Typically I'd try a different controller chip or transplant the flash memory chips to a donor flash drive. Well this one's so old that I can't find a donor. Or an exact match for the controller chip.
The controller is a Phison PS2233-F. I have many flash drives with very similar component layouts, values, same capacity flash memory chips, etc but they use a Phison PS2251-65. I found a datasheet for this controller but not the PS2233 so am unable to compare them to see if they might be compatible. And I don't want to throw a 2251 on there and potentially damage the flash memory chip.
Can anyone verify if these 2 controllers might be compatible for this configuration?
If not, or if I can't find a datasheet for the PS2233 to verify for myself, would someone with a flash reader/extractor like to take on this recovery? It might be a relatively straightforward one: a total of 2 documents need to be recovered and after the recovery there would be no need for return shipping--files can be transferred electronically. Also, it would need to be completed by April 23.
