Hello colleagues! I would like to ask you for help regarding DVR DAHUA DHI-XVR5216A. The devices in question were locked with an Admin Password. After overwriting the flash, the devices worked, but the serial numbers, MAC addresses, connection to the server and external P2P were lost. Is there any way to extract the passwords from the original dumps. Тhanks in advance!
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Hello,
I am trying to repair a Dahua NVR4216-4KS2 that is not booting.
The main BIOS/firmware is stored in an SPI flash EEPROM (Winbond 25Q128, labeled as U130 on the PCB).
I have a CH341A programmer and I already attempted the following steps:- Identified the correct chip (W25Q128, 3.3V SPI flash).
- Tried to read the contents with CH341A Programmer software. The dump seems corrupted and I often get the error: “Chip with the contents are in disagreement.”
- Compared several chip type selections (24Cxx and 25Qxx families) to confirm it is indeed a 25 series SPI
08-19-2025, 09:23 AM -
Hello. I have a problem with a PS5 console that I bought to learn electronics repair. The auction description indicated that the console had been dropped. The HDMI port and USB ports were damaged. The HDMI port was replaced by the previous owner, and after his repair, the console worked for 2 days and then became dead. After receiving the console, I replaced all the USB ports. After replacing them, the console started to turn on. On the logo screen, it displays "too many USB devices connected". My further attempts to fix the error involved replacing the Southbridge, 4 TPS2001D chips,... -
this laptop has been done by other tech...he did replace new usb port but problem still persist and early problem is both usb port not detected thumbdrive but it does charging device/phone...i need help to diagnos this problem
here the link for schematic - https://www.badcaps.net/forum/troubl...42p-schematics... -
Please i need dump dahua DH-XVR5116HS-x
Chip : F50L1G41A08-05-2025, 04:05 AM -
Hallo, anybody know where to get service manuals for Medical devices (other than Franks hospital)? The problem I have is with a physiotherapy machine it shows nothing on the display and the green LED flickers.[
Thanks in advance....
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