hey guys,i found a few flash drives in my office that were not working. i opened the casing of 1 of them, a kingston data traveler with 4 gb memory . i found was that a the drive was dead short and the flash io controller ic and flash memory ic were not getting any voltage though the 4 usb connector pins showed 5 volts.i the saw three inductor coils 2 of them were working fine i checked this by the continuity test by using a multimeter the third inductor however had developed resistance which was the cause of the shorting, all i did was removed the inductor and bridged the empty pads on the board with solder,and voila it started working.................................................................
-
Last edited by linston; 10-26-2011, 06:31 AM. -
Re: usb flash drive repair
Congrats! I've fixed some flash drive just by resoldering the 5v and ground solder joints. Users break it a lot!
-
Re: usb flash drive repair
I think you need to correct some text (I found that the drive was dead short there was no voltage at the two ic's) should read you found open circuit between the points measured, when you removed the coil and bridged the contacts you connected the input voltage directly to the ic's.
Comment
-
Re: usb flash drive repair
I found they fail (sometimes intermittently) is because the solder joints on the USB connector fail from mild forces when inserting and removing.My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.Comment
-
Re: usb flash drive repair
Well, that's not really surprising. The Chinese "engineers" behind cheap PSUs have discovered quite a long time ago that all inductors are indeed uselessOriginally posted by linston
. It's a secret discovery, though, so don't tell anyone else .
Congrats on the fix, by the way
. 4 GB is pretty decent.
Comment
-
Good evening,
I need help with dissassembling my USB Flash Drive (ADATA C008 / 16GB), the problem is that I don't know how to approach this USB Flash Drive dissassembly without damaging the USB Flash Drive itself....11-10-2024, 10:55 AM -
Hi everyone,
I'm in need of assistance with a Dell Precision 5820 Tower. The BIOS is locked with "Dell Security Manager," preventing access to the HDD-1 hard drive.
**Background:**
I recently purchased this Dell Precision 5820 Tower from a recycler who salvages equipment from abandoned office spaces. The computer was left behind by its previous owner and was password locked. Given that it can run Windows 11, I saw this as an opportunity to upgrade my setup.
**What I've Tried So Far:**
1. I accessed... -
Hi all,
I’m trying to recover a Lenovo Yoga Slim 7-14ARE05 with board DA0LS3MBAF0 Rev:F. I’ve run into an unusual issue where USB-C PD is stuck at 4.7–5V and the system won’t boot (keyboard lights flash briefly, then nothing).
🔥 The Problem Started After Suspected ESD/PD Fault
I experienced a power issue or ESD event through a USB-C charger
After that, the NX20P5090 power switch was visibly burned and was replaced
Now the PD controller always negotiates 5V @ 2A, even with known-good chargers
🧠 What I’ve Done So Far
Flashed... -
So I've worked on dozens of HP and Dell laptops and have never encountered this before.
Steps taken in my usual process.
Reset security settings in the BIOS
Ensure existing HD comes up into the OS
Shut down the laptop and disconnected the main battery
Removed old M2 drive and replaced with a new 1tb Mushkin Temptest NVME drive. (I'm aware the bus is Sata III but the drive should still work at a slower speed right? Been my experience in other laptops)
Replace battery connector and close up the laptop
Insert my USB drive with my Windows 10 image I've... -
Hello, I'm stuck in troubleshooting…
The flash system works like that : when the (mechanic) flash button is pressed, the flash mecanically pop up, and a circuit buck boost elevate 7v (batt) to 200-300v (?) for charging the big capacitor. And when the photo shoot button is pressed, the capacitor is discharged in the xeon light.
In the D800, there is a first « power board » close to the battery. 2 wires (batt 7v) goes to another little « flash board ». I measured 7v, so ok.
When I press the flash button, it's detected by the system, flash icon appear on LDC display....
Comment