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Hi, i want to upgrade the ram here. found in the schematics RAMCFG 3..2 and 1..0
but wich resistors ? without boardview that will be a problem. can someone help me ?
i have Hynix 4GB RAM Moduls
So that will be 100K to R2291
and 10K to R2284,R2282, R2280
and to pull out in R2292, R2290, R2294...
i think i figured it out.
got another 11" 820-00164 and i had still 4 RAMs left, so I soldered them there in and the same problem occurs.
today i found out that the SEC K4E6E304EE-EGCE I ordered has only 16Gb that means 2Gbyte !
So I soldered 8GByte in the Board and configured it as 16Gbyte...
I use a laboratory power supply , until now that was good for all a2141
PP1V8_SLPS2R 1.81V
PP1V1_SLPS2R 1.11V
PP0V8_SLPS2R 0.81V
PP1V8_AWAKE 1.8V
PP3V3_AWAKE 3.36V
PPVDDCPUSRAM_AWAKE 0.81V
PP1V2_AWAKE 1.21V
the history is it stopped from one day top the other
I was sure...
Hi, just this device came in
20V draw with batterie
no dong, no display
checked the power sequenz from repair wiki
https://repair.wiki/w/A2141_2019_16%22_MacBook_Pro
PMU_CLK32K_PCH is ok
PMU_ACTIVE_READY is 1.8V
PMU_ONOF_L is 3.3V
PP3V3_S5, PP1V8_S5 is 0V
R8013 Pin1 has a nice sinus wave...
thanks tomtom67 from this i was inspired to try this.
the state now is i can start high sierra without problems and i can see the 16GB in the system information. the main problem still is its randomly freezing .
so my guess there is wrong timing configuration. what do you mean?
i have the 820-00165 4GB version and want it upgrade to 16gb
so i bought 4x SEC K4E6E304EE-EGCE and soldered it in
then i soldered the RAM straps like ino datasheet DDR3:SAMSUNG_16GB
CFG0: L
CFG1: H
CFG2: L
CFG3: H
that worked but coming apple and during loading 30% it is turning off
then i...
tryed in another case and all is ok.
Found there is another sensor left side nearby the microphone. after replacing the microphone all is working.
Problem solved
i have an A2338 and by replacing the Display with another one I bought the TrueTone Option in the Display Menu is missing.
Is there any way to copy a serial from the origianl display or like that in to the other display to make this work again?
got this unit with high fan spin. found bad battery. after replacement fan is ok.
when i click on the sleep mode, the device goes into sleep mode and wakes up again normally. but when i close the lid it also goes into sleep mode, but after opening it, the display remains dark.
i have already...