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is this possible? I checked RT330 the value pin 1 open board is 0.209 my is 0.198 seems ok pin 2 open board shows 0.515 my is 1 i desoldered the resistor and measured it, 98K seems ok. pin 2 on the board, desolderd still shows .500 I soldered it back and now it shows pin 1 0.198 pin 2 0.500...

i got this device in. after power on, trackpad and keyboard work normally. if you close the lid and open it again after about 3 seconds, the trackpad no longer responds, as if dead. also the keybopard no longer works. you have to turn off the device hard and turn it on again, then it works...

I now found out that in normal mode everything is working but all time after wake up from sleep mode trackpad is like "dead" Now I found on the trackpad a tiny bit of old fluid . I cleaned the trackpad in ultrasonic and now all is good, after sleepmode is still working fine So I think that was...

ok, thanks for the hint

i have now reassembled everything with a new trackpad cable. the device now works flawlessly.

i tryed no the faulty mainboard without backlight cable. now its working all like it should be. but intresting, for doubleckeck i pluged the keyboardbacklight in again and now ALL is working without problems. i dont know now what was the problem, oh how i hate such things... i tryed the faulty...

î got this device with not working keyboard and not working trackpad. i replaced all the stuff like traclpad tp-cable, controller and so on. now i got a known good working mainboard. with the good mainboard keyboard and trackpad are working with the faulty mainboard kb and trackpad not...

ok i will do so

there is only CD3217B12 and some numbers

hi, could u tell me is there any difference. the supplier said its for different laptop models. in the schematic i found only CD3217

SSD0_VR_2V5_EN = 0V is this not a part of the problem? what does the restore/revive needs to work? where does the ..installing the system... installing the system and which system.

yes you are right. ok so I tried that revive and restore is the same result. both have just in the moment when the message comes installing system.. the drawing ampere jumps from 0.200 to 0.400 then after some time end it up with pictures I posted already

no only revive. the client needs the data. restore cleans it up I think?

PPBUS_G3H_SSD0 is 12.22 SSD0_VR_2V5_EN = 0V I measure with the scope the I2C"4" (I2C_PWR_SCL/SDA) but this is only 1.82V seems no try of communication there, in diode mode both have 0.454

no, found some pictures in the internet but there is no resistor. It represents (R4710-4715) the board ID tryed again to solder the soc rom with your datafile, now it shows me the dfu started to revive the machine but same result, stuck on 1/3 and switches from 0200A to 0380 A 5.11V but now its...

I just see on the board there is missing R4710. is this all time so or i blow it away? I dont have another board for check this, in the schematics no advise to find

i tryed that but the same result, 5.15V 0.200A but DFU on the master not to "see"

I flashed your file into a new chip, soldered it on the board. then i had 5V and about 200mA seems to be in DFU mode but in configurater not to "see" so i flashed the backup into a another new chip and soldered this back after that same like yesterday, 0,400 in DFU 0,200 in DFU to "see" but...

thanks. I will report back after that. Is there any other step needful? or only backup the T2 Rom and flash it with your file?

in the repair wiki i found https://repair.wiki/w/A2251_2020_13%22_MacBook_Pro ...PPBUS_G3H ~12.28–12.35 V = T2 communication issue with the ISL9240. The likely cause for this is the device is stuck in DFU mode due to corrupt T2 firmware or a failed CD3217. Proceed to repair steps below for...