Hello everybody,
I found myself with a motherboard of an imac of 2019 and I tried to replace it with the one of 2013 always 27 "without connecting anything other than the power supply (so no antennas, jack or other). Obviously the LCD being different and changing the connector I put the thunderbolt 3 adapter to hdmi and connected the monitor. The imac starts but I have a black screen, no signal. On the motherboard the second and third LEDs of the first group have turned on (in the picture) and not I remember if the first or the second of the second group. I have not found any guide on the diagnosis of the 2019 LEDs, what they mean or what they are for, nothing, just a guide on a board with 5 LEDs but they are in different positions to mine.
Could you tell me something about it?
Then I wanted to know if the 2019 motherboard has some kind of block that only makes it work with 2019 components or something similar
I found myself with a motherboard of an imac of 2019 and I tried to replace it with the one of 2013 always 27 "without connecting anything other than the power supply (so no antennas, jack or other). Obviously the LCD being different and changing the connector I put the thunderbolt 3 adapter to hdmi and connected the monitor. The imac starts but I have a black screen, no signal. On the motherboard the second and third LEDs of the first group have turned on (in the picture) and not I remember if the first or the second of the second group. I have not found any guide on the diagnosis of the 2019 LEDs, what they mean or what they are for, nothing, just a guide on a board with 5 LEDs but they are in different positions to mine.
Could you tell me something about it?
Then I wanted to know if the 2019 motherboard has some kind of block that only makes it work with 2019 components or something similar
