HDD GURU FORUMS

Hi,
Got this USB-stick with broken contact.
I desoldered the old one and just connected a new through wires.
Now the problem is that the stick is heating up quite qick.

Anyone with experience of this and can help me troubleshoot?
I circled the components thats getting hot.

Many thanks!

PS. I soldered the wires to a USB 2.0 contact instead of 3.0.

you don't say what pinout your wires are connected by (+ GND D- D+)

The PCB could have bent and shorted something if it is a multi layer board, or a component could have failed when the damage occurred.

HaQue wrote:you don't say what pinout your wires are connected by (+ GND D- D+)

You are right, sorry. From the top, GND (black), D+, D-, +5VCC.

HaQue wrote:The PCB could have bent and shorted something if it is a multi layer board, or a component could have failed when the damage occurred.

The PCB was bent.. guess I need to find a new pcb.

is the LED at LED1 burnt?

HaQue wrote:is the LED at LED1 burnt?

looks like it, yes

"3020" is probably the Vcore regulator. Check for a short to ground at L2.

EML3020, ESMT/EMP, step down DC/DC converter, Vin = 2.5V - 5.5V, 1A, TDFN-6, marking 3020:
http://www.micro-bridge.com/data/EMP/EML3020.pdf

Datasheets for HDD memory ICs including EEPROM, EPROM, flash:
http://www.users.on.net/~fzabkar/Datasheets/DATAURLS.HTM

"8733" is probably a 3.3V linear LDO regulator. Check its Vout pin for a short to ground.

Adisa wrote:Hi,
Got this USB-stick with broken contact.
I desoldered the old one and just connected a new through wires.
Now the problem is that the stick is heating up quite qick.

Anyone with experience of this and can help me troubleshoot?
I circled the components thats getting hot.

Many thanks!

PS. I soldered the wires to a USB 2.0 contact instead of 3.0.

does it show up after you soldered new one?maybe just cool it with fan til you get data recovered?

ESMT/EMP, EMP8733, Fast Ultra High-PSRR, Low-Noise 300mA CMOS LDO, marking 8733, SOT-23:
http://www.micro-bridge.com/data/EMP/EMP8733.pdf