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:

1. Identified the correct chip (W25Q128, 3.3V SPI flash).
2. 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.”
3. Compared several chip type selections (24Cxx and 25Qxx families) to confirm it is indeed a 25 series SPI

...

I have a Sony 65A8H. Always bothered me that it doesn't have HDMI 2.1. I noticed the A80J board appears quite similar. And comparing some wiring diagrams in the service manuals (albeit A9G vs A90J since I couldn't find the A8/80 manuals), things appeared quite similar. And my understanding is the panels between the two TVs are more or less the same.

So I decided I'd experiment a little bit.

I bought an A80J board. Left the speaker connection unplugged because it doesn't fit. Changed the power connector to fit the new board. Plugged in everything else.

When...

Hello all ~

Hope this finds you well. This LG 82UN8570AUD (April 2021 model) 4K UHD television has full audio capabilities but video is compromised / problematic.

When I picked up this large LG tv it had a full black screen upon startup. Previous owner said it just went black one day. No popping sound or anything else of note.

I got the display to work by taping off several traces of the right-hand side ribbon cable on the TCON that leads from TCON to PANEL. However, despite dozens and dozens of attempts to find the right combination / range of traces taped...

Hi guys
I need the Flash Dump (.bin) file of the Traktor Kontrol S4 MK1. SPI chip number is 25DF041A from Atmel (4Mbit)
So please let me know if you have the .BIN Dump of this model and its price and the payment method.
I appreciate your help.

Hi guys,

while trying to mod my ThinkPad X1 Nano (model 20UN) I got too impatient to hold the wires pressed to the SPI Flash contacts, so I soldered wires to it, but wasn't paying attention when connecting my programmer and, stupidly, swapped VCC and GND. Thus I fried the main SPI Flash, and I only have an incomplete/corrupt dump (u49_incomplete.bin). The secondary SPI flash on the board (W25Q256JVEIQ) seems to hold two redundant copies of the EC firmware (at 0x1000 and 0xc0000) as well as a redundant BIOS copy. I am fairly confident that the secondary Flash dump is correct (dumped...