Instructables

can an USB flash drive burn from wrong connections?

couse i think i have that...
i was mounting an extra USB, since my motherboard had some spares,  and wanted to test if i had the connections right, but the USB flash drive didnt light, and i just took it out, turned the connections and tried again, then again it did nothing, and now when i enter the flash drive in a slot i KNOW works ok, it doesnt light up anymore...
can i do anything to repair, or make it work any other way? theres alot of data on it i need (yes i made backups, but theyr from a month ago, was planning on a new one)


lemonie4 years ago
If you cannot read the drive at all, I think we would agree that you broke it. Is that the case?

L
godofal (author)  lemonie4 years ago
thats the case, but i wondered if there was any repairing possible.
btw, the chip/components look fine, not burned or anything
lemonie godofal4 years ago
Maybe the memory is OK, but the controller is damaged. In theory you could get an identical stick de-solder & re-solder either the controller or memory ICs & hope it works. But you know what that sounds like...

L
godofal (author)  lemonie4 years ago
well, that would sound like mission impossible 5...
btw, i got that flash drive for free for some magazine, i doubt i can get another one...
and, i dont think the data on it is worth all that...
frollard4 years ago
How can you change the connections?

its got + and - dc 5 volts, and +- data connections - and they are fixed on the connector...

If you've plugged it backwards it could damage the connector, the usb slot, or the drive.  If when you plug it into a known good usb port and nothing happens - either theres something wrong with the port or its toast.
godofal (author)  frollard4 years ago
as i said, i was making a new USB connector on my PC, so i think i turned the connectors accidentaly
normally its like:
GND | data- | data+ | VCC
(i thought)
and i think i turned a cable wich made the connector go:
VCC | data+ | data- | GND

its not that i smashed my flash drive upside down into the connector or anything...
ah - reversed the connection to the USB PORT...gotcha - that would reverse the + and - pins - Data should be fine, but applying the voltage reverse polarity would probably destroy lots of usb peripherals - since its built physically into the port design, its often not included in the peripheral design to have polarity protection.  (Silly when you think about it, since it just takes a simple diode)

...so its probably bunkd.
godofal (author)  frollard4 years ago
so, completely scrap? no way (other than lemonie said) to reapair it?
a lot of consumer electronics these days are sadly just not reparable by most people :(

The components are too small, and hard to diagnose when something lets out the magic smoke.  My only thought is try it in another computer - or consider warranty return.
godofal (author)  frollard4 years ago
hmm, maybe i still have waranty on it :D
maybe i never had it, but its worth a shot :)