Solid State – In-circuit fault

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The internal circuit in most USB memory keys included a number of electronic components which are present to facilitate the writing of data to a memory microchip via a controlled chip.  The ancillary components include a crystal oscillator and a series of capacitors and resistors required to support the transmission and reception of data through the USB interface.

If a component in the supporting circuitry (other than the memory or controller microchips) fails, this can usually be repaired or replaced so as to get the device working on a temporary basis for enough time to complete a full USB data recovery..