820-00597
iMac 21.5" A1418 2017 4K is not showing an image properly.. It shows an image externally without issues but to the internal screen it's intermittent.
Another screen results the same thing, it's a main logic board issue.
I had doubts about the LVDS connector so I replaced it, still the same issue..
The main logic board diagnostics LEDs are 5.. #1, #2, #3 works OK but #4 is half on and #5 is off.. I don't know what #4 means while it's not completely off or completely on..
Anybody having an idea or seen this case prior?
iMac 21.5" A1418 2017 4K is not showing an image properly.. It shows an image externally without issues but to the internal screen it's intermittent.
Another screen results the same thing, it's a main logic board issue.
I had doubts about the LVDS connector so I replaced it, still the same issue..
The main logic board diagnostics LEDs are 5.. #1, #2, #3 works OK but #4 is half on and #5 is off.. I don't know what #4 means while it's not completely off or completely on..
Anybody having an idea or seen this case prior?
Comment