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I have 820-3787-A. When switched ON , there is no display , no light , but continous ram beeps.
All voltages are normal . Ram voltage is also present. There are 32 rams.
MEM_RESET_L voltage is 1.34v.Now what to test? And how to confirm which ram is bad.
Just now i am working on 820-3115. Sus o/p signal from pch is missing. S5_PWRGD is getting generated but PM_RSMRST_L is missing. Tracing the signal i find PM_SLP_SUS_L is missing. What should i check in PCH. ?
i am doing my work but brother i am not happy with what i am doing. I have outline knowledge about the signals in apple motherboard. Pls help me if you have complete signals processing from first to last signals.
way back in my institute my teacher thought us about television circuit. I was...
i have given you exact reading of A 1502. Just now i have kept it aside. I will again take fresh complete reading of j8300 (all voltages) upto cpu. and let you know.
Just now i am working on 820-3115. Sus o/p signal from pch is missing. S5_PWRGD is getting generated but PM_RSMRST_L is...
yes i am getting image. question mark blinking.
yes i measured in diode mode . forward ie: red probe ground and black on pin 1 - 1.225 is the reading . reverse ie: black is ground and red on pin 1 - infinite. This is same even in ok board.
DP_INT_HPD and LCD_PSR_EN present . I have not...