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Hello!
Can not get 20 volts on this board. Customer says that for last 2 days charging was unstable, then laptop just turned off
Now there is 3 CD3215 in the loop, UB400 stable
Board is clean, no corrosion, no oxidation
Found blown resistor RB036 ( replaced)
Already changed UB400 ( 2 times...
Hello!
Mac A2141 turns on with battery, there is a chime, but PPVCCGT_S0_CPU is missing. No image, no backlight. USB activity is present, caps lock reacts
Without battery doesn't turns on, 20v, 0.04a
DFU restoring sucsessful. In SMC bypass mode doesn't start
Before was short on PP2V5_NAND_SSD0...
Hello.
Mac A1706 doesnt turns on.
3 of 4 CD3215 rebooting, LDO 1.1 present.
UB400 steady 5V, 0Amps, no LDO 1.1v After changing UB400 no changes.
Found out that all PPBUS lines are missing (ppbus_g3h, ppbus_hs_cpu, ppbus_hs_oth5v )
PPDCIN_G3H - 5v
PP3V3_G3H - 3.3
Diode mode for ppbus lines is...
Hello.
Mac A2141 doesn't turns on. 20v 0.05A with battery, 5v 0.05A without battery.
Found short on PP3V3_G3H_SOCPMU (C7805), after i changed cap - short is gone.
Now PPBUS - 12.3v,
PP3V3_G3H_RTC_X - 3.3v
PP3V3_G3H_T - 0.4v
Other voltages are missing, so no DFU as well...
Hello everyone.
Got this laptop yesterday, castomer says "mac doesn't charging and external usb drives can not be recognized"
Mac still powers on, everything works, exept usb-c potrs. With plugged in charger usb-c meter shows 5 volt steady on one of the ports, and 5 volt rebooting every 2...
Hi, got this mac a1932 for repair. Board looks clean, never been repaired before, no corrosion or traces of liquid damage
Bare board with no battery stays at 5v 0.09-0.1 amps
When battery connected - switching to 20 volts, 0 amps
Didn't find any short on board.
F6700 was blown, changed with...
Hello everyone. I got a Mac a2141, with massive board damage by wine. PPBUS was shorted. Removed CA780, C9573, C9574. Short is gone, PPBUS is back to normal value.
Now there is 20v on charging ports, 0.03 amps
PPBUS 12.6V
PP2V5_NAND_SSD0 2.5v
PP1V8_G3S present
PP5V_G3S present
PP3V3_G3H_T...
Hello everyone
Board came by liquid damaged and messed up by previous service. Some components are missing, dirty, CD3215 overheated etc. No voltage on USB-C meter at all
What is done for now:
Replaced all 4 CD3215
Replaced U7000
Soldered back missing U8000 and U7960
Soldered back missing...
Hi. First of all sorry for my non-perfect english.
I have a problem with A1990 mac. It came with a corrosion on C9081 and line PPBUS_G3H_SSD1_SNS was shorted which is a very common issue on that model. After removing shorted cap mac booted and worked stable for 2 weeks, but now it returned back...