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820-00138 graphic issues
Hi guys, Got a A1398 , board 820-00138. It boots in different ways with different issues randomly. - Chime but no image no backlight. - Loop on Chime sound (no image no backlight) - Boot with wrong colors and wrong resolution - Boot normally and suddenly screen came black , but backlight stays...- DentingDave
- Thread
- Replies: 4
- Forum: Macbook Logic Board Repair Questions
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820-000875 No power
Hi guys! Got an A1708 that won't power on. Mainboard drain 5v from power adapter but won't switch in 20v mode. No water damage no corrosion. PP3v3_G3H is 3,40V on both entrance of U3100 , U3200 ... measured on chip side of R3100 and R3200. How can i figure if both the CD32 are working fine...- DentingDave
- Thread
- Replies: 2
- Forum: Macbook Logic Board Repair Questions