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I have a problem with this card, it presents the classic problem of graphic artifacts due to ram, I reballed much of the ram but I just mitigated the problem after about half an hour of operation under stress, the artifacts reappear, how can I check the memories and figure out which one fails?
The board suffered liquid damage mainly on PPVOUT_SW_LCDBKLT, which corroded the tracks and also the pins of the lvds cable I replaced the lvds connector and used a 2010 model cable but on PPVOUT_SW_LCDBKLT I get 24 V only the led on the back but LCD does not display anything even the white...
Hi, i don't get the precise green light that the Magsafe is not original this is what i have:
I have examined the power supply circuit of the 5v and the 3v3
starting from C9487 up to U7101 and pin 25.
in both I find the voltage unstable, can the defect be Q7260?
Hi i am practice on an old board a 820-2877-b, with damage from liquid, the board goes to S0, but no fan spin
PP5V_S0 = OK
PP3V3_S0 = OK
PP1V8_S0 = 0K
PP1V5_S0 = OK
CPUVCORE = 0
ONLY WITH RESET SMC STARTS
Hi, I'm learning how to repair the macbooks, I'm working on a macbook air A1370, card 820-2855 A, the cold machine starts normally, at some point, has video artefacts, and then 3 beeps, I don't seem to recognise the twig, I don't know how to do it, because