Originally this board would not start had blown caps and bad U7000 corrosion around that area had to jumper pin 6 of U7000.
This board seems to work right BUT shows VDH002 in AHT. The Mac runs mostly normal but has strange pauses like when loading boot option screen there seems to be a long pause. I can format and erase the drive in OS install screens. Install starts and either goes to black screen or with other OS gets stuck early on restart/load screen and then boots back to install OS stage. No corrosion around SSD connector. Runs good with external OS.
DIode tested all SSD port pins red to ground and compared to working board and everything looks very good there. Tried a different SSD also, same result.
Not sure where to go from here...
This board seems to work right BUT shows VDH002 in AHT. The Mac runs mostly normal but has strange pauses like when loading boot option screen there seems to be a long pause. I can format and erase the drive in OS install screens. Install starts and either goes to black screen or with other OS gets stuck early on restart/load screen and then boots back to install OS stage. No corrosion around SSD connector. Runs good with external OS.
DIode tested all SSD port pins red to ground and compared to working board and everything looks very good there. Tried a different SSD also, same result.
Not sure where to go from here...
