brand: LG
model: 55UC970V
motherboard: EAX66104204(1.0)
Hello dear repair friends.
the motherboard does not start.
The MICOM R5F100GEA works, with the button or the remote control, the motherboard power supplies start, there are data transfers on the SPI IC1905 (MX25L3206), and a furtive activity on the eMMC IC8100 (THGBMAG5A1JBAIR).
Sometimes the backlight turns on and the TV remains stuck on the LG logo, there is permanent loop activity on eMMC in this case.
I found a motherboard EAX66104204 (1.0) of a 60UB850V, it works on the chassis of the 55UC970V, but it is missing 2 audio channels.
I cloned the SPI to put on the original card, it still does not start.
I cloned the eMMC content and put on the original card, it still does not start.
I changed the eMMC to a KLM4G1FE3B (which can be mounted according to the service manual), it still does not start.
Does anyone have any idea what the problem is, or can advise me on other repair methods?
Thanks for anything you can offer me.
model: 55UC970V
motherboard: EAX66104204(1.0)
Hello dear repair friends.
the motherboard does not start.
The MICOM R5F100GEA works, with the button or the remote control, the motherboard power supplies start, there are data transfers on the SPI IC1905 (MX25L3206), and a furtive activity on the eMMC IC8100 (THGBMAG5A1JBAIR).
Sometimes the backlight turns on and the TV remains stuck on the LG logo, there is permanent loop activity on eMMC in this case.
I found a motherboard EAX66104204 (1.0) of a 60UB850V, it works on the chassis of the 55UC970V, but it is missing 2 audio channels.
I cloned the SPI to put on the original card, it still does not start.
I cloned the eMMC content and put on the original card, it still does not start.
I changed the eMMC to a KLM4G1FE3B (which can be mounted according to the service manual), it still does not start.
Does anyone have any idea what the problem is, or can advise me on other repair methods?
Thanks for anything you can offer me.
