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No difference with an external screen, but now it decided to boot to a question mark folder, so the SSD is not seen.. fucking hell, the NANDS are getting all their voltages (3v3, 1v8 1v2 and SSD_CORE 1v0 ) and are getting pretty warm.. what a trolling board. Gonna check some more and see what...

sorry was in a rush and just replaced them, mosfets are now running at normal temps. The Mac now boots into the critical update.. before this everything was booting just normally...pfffft

hi, i got this thing back to life by replacing the ISL. Everything checks out, ut upon handling the board i noticed that both QB300 and QB400 get extremely hot (burnt my finger on them). when using the corresponding USBC ports. I know mosfets can get pretty hot in general, but this is extreme...

so this board was no power initially. had corrosion under UB300 and UB400, replaced both cd3215s Board works, but now it intermittently looses the SSD: 1 out of 10 times it can boot fully, but other times questionmark-folder. The 3v3 and 1v8 for the SSD are there and stable (even when it cant...

this one had a shorted PMIC. pp3v3_s5 was shorted under it. thanks for the help!

i diodemode tested around U6300 to find L83_VP was measuring full short the pin was connected to ground in the chip itself. Must've been a crap donorboard. anyways, everything is working again, thanks for the help!

ok. just continued testing, all above voltages are gone now, as is PP5V_S5.. in my understanding the enable for the PP5V_S5 comes from the PMIC through U7890, right? If I dont have this, am i looking at a bad PMIC?

ok, tried it with a different audio jack, but no dice..

PM_SLP_SUS_L = 3.32V PM_RSMRST_L = 3.32V PM_PWRBTN_L = 3.32V triggered SMC_ONOFF_L gives drop pulse on PM_PWRBTN_L (drops to around 0,4V says multimeter)

ok, yeah the jack you mean. yeah i couldve thought of that myself dammit. havent tried that, will do and report back monday.

Yeah could be. I also think there is a large amount of fake and fucked CD3215s for sale. In my experience, all the ones i've bought separately off aliexpress were all shit, and i've bought from 5 different sellers so far. I only order donorboards now that i take them off of and reball them/...

yeah this is an original 87W charger with battery connected its drawing around 1.1A and 12,5V is going into the battery. still no S4 though

this doesnt have an audio board, but you know that:) HDA_RST_L is 1.8V

820-00840 again.. this one had power problems initially, but after replacing both CD3215s i got it to go to 20v it draws 0 amps ppbus is present at 13V S5 both 3.3v and 5v are there, i get S5_PWRGD S4 isn't (no shorts found) missing enables for S4 missing pm_batlow_l I'm having a bad day and...

00840 with no liquid damage came in for a screen-replacement (original screen had one crack in it, so no heavy damage) So this one has no audio (no audio input/output devices in Sound preferences, and under systemprofiler there is only listed: Devices, Intel High Definition Audio. Audiocode: 0...

well the chip's not bad; it's back on its board now and the machine is fully working again. i've beeped out the sides of the chip (when it was soldered on the solderboard) to the DIL-legs: everything was correctly connected. you said you've got a solderboard on the way, right? Maybe try it out...

yeah this is a 3.3 volts ic though. i have tried all the possible device IDs this thing has, but no dice.. gonna give up, sorry.

I think it specifically says to connect it to the port that’s labelled as the 1v8 side (normally used to connect a 1v8 ROM, in that case,the other 3v3-port then connects to the medusa). The port labelled 1v8 bypasses the levelshifter i.e: the only thing between port and soldered chip is traces...

hey 2informaticos, i've got the rom soldered on to this board: A4069 from this link: http://www.cmizapper.com/buy/medusa-accessories.html i have it hooked up to my reader (A TL866 II), but the software doesn't have the right Device ID to read from the chip. all connections are good to the reader...

crap, so i got a solderboard (a levelshifter board, but can use it in 3v3 mode as well) that the chip fits onto, but customer needed his machine back early so had to close it up. I do have another repaired board in, i could take the dump off of that?