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Hey Guys,
Working on 820-00426 chime, fan spin but no display. Plugging HDMI or DP to external monitor screen works fine.
Sometimes at random time image appears on screen just for seconds then disappear.
Board pretty clean, no visual liquid damage.
J8300 pin 1 = 0v (PPVOUT_S0_LCDBKLT)...
Hey Guys,
Working on 820-4924 with weird graphics / display issues. Graphics working well until login screen, after put password and login to desktop screen suddenly goes mosaic.
Plugging HDMI or DP to external monitor screen works normally and also recognizes the internal screen, when...
Hey Guys,
Working on 820-3476 with severe water damage and corrosion. Replaced all bad components, using original Apple MagSafe 60w green light but no fan spin.
Here my measures:
PPBUS_G3H : 12.57v
PP3V42_G3H : 3.42v
PPVRTC_G3H : 3.3v
SMC_ADAPTER_EN : 3.398v
PP3V3_SUS : 3.3v
PP3V3_S5 : 3.3v...
Hey Guys,
Working on 820 2936-B with no green light, not recognized battery also, no visible water damage.
Already replace ISL6259 and SMC (twice) from donor board, No changes !!
This Mac draws 0.020-0.023 Amps at 16.5V, PPBUS_G3H 12.28~12.30v, what more could be the problem of 12.30v ...