I have an LG 34UM68 with board EAX66876002 but it has issues with not working correctly.
It powers on, backlight comes on, but there is no OSD shown, and no video shown on the screen.
I checked over the board for any obvious visual damage, and everything looked OK.
I then took a dump of the main SPI Flash chip.
I tried to take a dump from the EEPROM, but it would sometimes read data correctly, and other times would had obvious reading problems.
I managed to get a dump from it which somewhat resembled correct data - part of the plaintext data showed "LG ULTRAWIDE".
I removed the EEPROM chip, and replaced it with a new AT24C256, and wrote the same data back to it.
The screen now makes a 'chime' when powering on, and also when connecting/disconnecting a HDMI or DisplayPort device, which it never done before.
However, there is still no video signal shown.
Does anybody have any experience with this particular board? All research yields a different board (EAX66876001 instead of this board which is EAX66876002).
I am not entirely certain that the data read from the EEPROM was entirely correct, and have so far come up empty looking for a dump of the SPI flash and matching EEPROM dump.
If anybody can offer any insight or past experience with this particular display, I'd be very grateful and happy to pay for any assistance or resources that can be offered.
If it makes any difference, we are based in the United Kingdom.
It powers on, backlight comes on, but there is no OSD shown, and no video shown on the screen.
I checked over the board for any obvious visual damage, and everything looked OK.
I then took a dump of the main SPI Flash chip.
I tried to take a dump from the EEPROM, but it would sometimes read data correctly, and other times would had obvious reading problems.
I managed to get a dump from it which somewhat resembled correct data - part of the plaintext data showed "LG ULTRAWIDE".
I removed the EEPROM chip, and replaced it with a new AT24C256, and wrote the same data back to it.
The screen now makes a 'chime' when powering on, and also when connecting/disconnecting a HDMI or DisplayPort device, which it never done before.
However, there is still no video signal shown.
Does anybody have any experience with this particular board? All research yields a different board (EAX66876001 instead of this board which is EAX66876002).
I am not entirely certain that the data read from the EEPROM was entirely correct, and have so far come up empty looking for a dump of the SPI flash and matching EEPROM dump.
If anybody can offer any insight or past experience with this particular display, I'd be very grateful and happy to pay for any assistance or resources that can be offered.
If it makes any difference, we are based in the United Kingdom.
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