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ening up with this (reviving)

thanks, i flashed that and soldered back still 5V and 400mA but now i can "see" it in dfu mode already. but reviving device stucks on 1/3 of the way, while 5.11V and 0.375A need realy help

found under U3060 one leg missing because of corrosion i have a programmer and the same part from a a1708 from where i can get the data to flash?

yes, but all i do i dont get into the DFU mode maybe its a DFU mode because i have 5.19V and 0A, after disconnecting the TB-Cable it start to draw 0.400A like before but in the "DFU" mode i dont see the device on the master Mac

foud burned R7900 like in repairwiki described "... If PP3V3_G3H had a short circuit, but the board stays at 5V and PP3V3_G3H is still missing, it can be due to R7900 (0 Ohm Resistor between PP3V3_G3H_RTC and U7800 PMIC, that takes PP3V3_G3H_RTC input and outputs it as PP3V3_G3H). Short...

on all 4 ports the same PPBUS_G3H 12.26V PP3V3_G3H is missing short to GND in PP3V3_G3H via thermal camera and injection of 2V found damaged C7807 i pulled it from the board, the short is also away, in diode mode i get L7660 Pin 1 0.413 was 0,0 board back in the case with accu, no...

no idea... PPDCIN_G3H is 5V, PP3V3_G3H is 3.3V PPBUS_G3H is 12.26V 400mA its still without DZ3300_CXT and DZ3303_CXT

ok, replaced but nothing changed R3109/08 has now on Pin 2 .528

found here a hint https://boards.rossmanngroup.com/threads/a2251-820-01949-a-no-power.63508/ checked R3108/09 and found under R3109 pin2 korosion. will change and report back

3 of the 4 tb ports working "normaly, but stuck on 5v 1 the front left side starting the amp meter all time again i found liquid problem under R3107 Pin 2, there was a big number in diode mode I scratched the mainboard there and found a via. so i soldered a new resistor and a jumper wire to pin...

thanks, yes both screens and machina was 2015

sorry, both screens had bad LVDS cable and the "new" cable was defective as well.

i am just working on this machine. the board is ok, the display from a known good device is working on this machine the faulty display has no backlight, with a lamp behin the logo is everything to see. is there any posibility to fix that display anyhow? i have 2 of this faulty displays with...

:-) Ah ok, yes thats it. Thanks, the Resistor looks so good but infinity resistance, replaced and work like it should be nice weekend to all

on Q7155 I have only battery connected 1,2,3) 8,3V 4) 1.5V 5) 8.3V DC in and akku connected 1,2,3) 8.55V 4) 8.55V 5) 8.3V the same I could measure with a good board, that is working fine with the same akku in standalone

hi, I just got this device with liquid damage. was running, fan full speed and no akku to see, I cleaned it and replaced the smc after that fan was good and akku to see, communication working but still 8,22V PPBUS_G3H now still replaced U7100 and PPBUS_G3H has now 8.55V, so i2c communication...

yes, I did both and after that i tryed to install Monterey but everytime I get the yellow screen Installing Catalina is no problem

i coulnt fount any matching warranty programm and yes for this client its important to update this machine. is there no way?

same yellow screen on both display if used an additional external display

12.4 installion from usb stick same problem, after installation cames the apple and the about 25% of the loadbar, after that it is switching to the yellow screen, the cursor is possible to move i tryed with all 4 rams one by one but the same i tryed an working 12.4 installation from external...