Search results

Checked all diode mode readings for u7000 all are similar to working board. Also changed u7000 stil same issue... What else can disrupt communication between u7000 and t2? Could it have something to do with u4770 SoC Rom? But it works with Batt so SoC rom shouldn't be the issue...

Yes the battery works with a good board. And I use a 100W Not original but good Branded charger. Which also works with other good Board... Should this make a difference?! Did some measurements. Think it has something to do withPPBUS_G3H which is 12.3v on this board and should be 12.6V.

Wauwww, After months I the closet. I have an update... I flashed the T2 rom file just a hell Mary and connected on a battery with a charge in it and it is recognized as in DFU. After DFU restore I got an Apple logo. Because it won't charge I can't complete the setup, to check for further...

Hi all, I have here a 820-01700 with minor liquid damage around u9080 area. Nobody touched it before, that's good but found more than 1 problem. I was not getting 20v on the USB amp meter and PPbus_G3H was jumping up and down, couldn't get a reading. Found that pp3v3_g3h was shorted by C9501...

FOUND IT... UC120 was missing a corner... So PP1V8_AON was not being created. And after replacing it everything came back! Up and running, perfectly! THXS for the help.

Can't get it in DFU mode?! Maybe something to do with USB-C connector (as the external keyboard also doesn't work) What I noticed, after image goes away. It still boots. When I press power button, the screen comes up with backlight etc... but after 5 sec goes away. And comes back again when I...

1.1v is correct, checked on working M1 Board. There is also an issue with keyboard, trackpad and external USB keyboard. When I connect on external monitor boots up to login screen but can't use mouse or keyboard. Als connected external USB keyboard, nothing... Looks like more problems, What...

Tested, with known good compatible screen. Same result... Checked LPDP_INT_HPD, goes to 1,1v for 10 sec. then goes low at the same time image disappears. Also no backlight on screen but backlight voltage is 43v until LPDP_INT_HDP goes low.

Hi, I have a 820-02020 with liquid damage around backlight area. Was working fine only thing was no camera. So tought lets ultrasonic to clean. And now I have a very dim image (apple logo) and then after 5 sec no image. Also after 30 sec, lcd comes on for 2 sec with backlight and image (login...

Is there a difference between cd3217 intel and cd3217 M1 chips? Don't think so right... Can I use 2 different version of the cd3217 chip on one logic board. like this? Or should I use only pairs?

Should I Flash or just change with donor board? Are there interchangeable? I don't have u4770 rom files...

Yeah first thing after not seeing 20v... Didi it in case with the keyboard combo and als with the force DFU. NO sign of live! I'm guessing there is no other option left to change the T2.

After injection voltage, UB400 was getting hot. replaced it and also UB300 Because there was a solder bolt on it side. So now al the CD3215 are changed. and still no 20v. Checked all LDO's and looking good. Still 5v and 0,425A on amp meter on all ports. PPBUS_G3H 12,3v T2 is getting warm...

I found a short on UPC_PMU_RESET 4,5ohm to ground. This is on all cd3215 chips and u7800. Can I safely inject voltage? How much do you suggest?

How much heat and air do you suggest to get NAND chips off? They are underfilled, very hard job.

Any more suggestions? I have a few donor boards... I can try to replace the T2. If it is possible at all? Otherwise I'm gonna trash the board... Customer didn't want it back anymore.

No G3S voltages: PP5V_G3S 0v diode mode 0.404 PP1V8_G3S 0v diode mode 0.321 PP3V3_G3S 0v diode mode 0.289 No SSD voltages: PP2V7_NAND_SSD0 0v diode mode 0.355 PP1V8_SSD0 0v diode mode 0.347...

Have same issue with a2159 820-01598! After DFU restore or revive gives error comes back in recovery mode.

No all LDO's are now present... Still not getting 12,6v on PPBUS and no DFU edit: Also no 20v on charger