not sure what happened to the attachment. here it is again
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Thanks. I picked this one up today off the curb. Plugged it up and immediately thought Tcon. Had same symptoms as yours. ( blank screen ). Had good tcon leftover from 55S405. Tv works.Leave a comment:
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Re: TCL 55P607 / 55P605 tcon dump
Maybe buggy firmware, or a gone bad firmware update?Leave a comment:
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TCL 55P607 / 55P605 tcon dump
Picked up this tv in non-working condition. On plug, the backlight would come on, and the led would flash about 16 times before cycling. So my initial guess was a fault with the mainboard. However, after holding down the reset button and plugging in power, it actually booted and stayed on. Still no display, but backlights good, and could hear roku sounds when pressing physical/remote buttons. No more cycling.
Next, detached one panel ribbon at a time, and got the respective white half, and banding on the other. Tcon seemed like common / likely culprit and are available cheap. Confirmed it revived the tv.
Saw replacement flash chips being sold as well, so I did some testing. Dumped the bad flash repeatedly and got consistent results. Dumped the good flash, flashed it on the bad one, and verified a bunch of times. Chip seems to be fine?
Retested the bad tcon and it's back to working. Closed the tv back up with the now working original tcon board, and will save the replacement for a rainy day.
So I'm curious what happened here? It seems like something was corrupt both on the mainboard (that was fixed with a reset) and tcon. Perhaps I'll be looking at a replacement mainboard in the near future?
Anyway, the problem tcon board is ST5461D04-1-C-7. Looks like it's used on a few different models as well. Flash chip is at IC6: GigaDevice 25Q41BT 4Mbit SOP8. AsProgrammer detected it as GD25Q40
Attaching the dump from the working tcon. Hope it helps someone in the future.
md5sum: d840252fccd1ea1a70bf36148d34c68dAttached Files -
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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 -
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...
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