formerunicornbroker
New member
Hey guys,
I have an issue that I'm hoping someone can please help me with.
It is an 820-00165 which has a flickering display after logging in. During startup, the apple logo is displayed and the machine loads to the login screen. After logging in, just before the loading bar completes, the screen starts flickering. It appears to be the screen itself, not the backlight but I could be wrong.
External display works with the screen plugged in or not.
I have tested with another known good screen, IO board and cable and have removed the board from chassis.
No physical damage can be seen. LVDS looks clean and continuity between pins and caps/resistors is fine but I have touched up the joints to make sure. I have also reflowed U7701 but have not yet replaced it. I have replaced C8324 because it looked a little funny but no change.
Diode readings on LVDS connector all seem roughly .050 or .060 below values shown on logi.wiki.
Here is a video of the issue.
Thank you very much for reading.
M
I have an issue that I'm hoping someone can please help me with.
It is an 820-00165 which has a flickering display after logging in. During startup, the apple logo is displayed and the machine loads to the login screen. After logging in, just before the loading bar completes, the screen starts flickering. It appears to be the screen itself, not the backlight but I could be wrong.
External display works with the screen plugged in or not.
I have tested with another known good screen, IO board and cable and have removed the board from chassis.
No physical damage can be seen. LVDS looks clean and continuity between pins and caps/resistors is fine but I have touched up the joints to make sure. I have also reflowed U7701 but have not yet replaced it. I have replaced C8324 because it looked a little funny but no change.
Diode readings on LVDS connector all seem roughly .050 or .060 below values shown on logi.wiki.
Here is a video of the issue.
Thank you very much for reading.
M
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