martyjelen
Senior Member
Last Activity: 06-01-2026, 04:26 AM
Joined: 03-06-2023
Location: Prague
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Thank you, I already tried this. No short on NAND.... -
So is it SSD related? I found some topics about it. But I'm not sure....Leave a comment:
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A2780 - no power, 20V, 550mA
Hello I have this macbook A2780. It can't be turned on. When I connect BY-3200 i see there is 20v after few seconds current consumption goes to 265mA than goes to 560mA. No signs of life. No logo, no chime. Fans are at full speed. I tried to revive it via configurator. DFU mode can be entered but revive fails at error 4022. PPBUS_AON is not shorted. There is 12V. What else should I check please? Thank you.... -
Does this mean A2141 is compatible only with A2159? https://repair.wiki/w/CD3217_compatibility or am I wrong? Thank you.Leave a comment:
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There was no signs of liquid damage on connector or nearest area, but when I removed CD3217 (U3100), there is corrosion. OMG.... Wish me luck.Leave a comment:
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PPBUS_G3H is 12.3V on top left port. On bottom port there is 0V. (it goess from 5V to zero after 2 seconds.) Could it be problem with CD3217?Leave a comment:
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I tried to rewrite ROM, but it's still the same. No DFU.Leave a comment:
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Ok. Thank you very much. Maybe there is some difference between 820-01700-05 and 820-01700-A (mine PCB)....Leave a comment:
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Hello, finnaly I found a way to read T2 ROM dump. ROM from my dead PCB has 16MB but when I downloaded a ROM from forum it has only 4MB... Could you tell me what could be wrong? This dump also has the same size 4MB
https://boards.rossmanngroup.com/thr...o-power.63469/Leave a comment:
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Unfortunately, this cannot be used with BeeProg that I have. One question before I'll look for other programmer. After you rewrite T2 ROM dump is there "revive" option? Or only "restore" option. I mean data is really important.Leave a comment:
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I tried it. It doesn¨t detect in DFU. I tried both left ports.Leave a comment:
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Mabook is not in DFU. Is this method working for A2141 ?
"Press the power button for about half a second, then also press and hold Left Control + Left Option + Right Shift for 10 seconds, then release all keys except power and hold power until the Target Mac shows up in Apple Configurator on the Host Mac"Leave a comment:
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R7652 - 0V on both sides
R7691 - 0V on both sides
pin29 on U7650 is PP5V_S5_LDO - 2.5V
pin22 on U7650 is P5VP3V3_VREG3 - 3.3V
did you mean these ?Leave a comment:
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P5V_3V3G3H_EN -50kΩ
P5VG3S_EN - 50kΩLeave a comment:
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Pin no. 2 on both F7000 +F7001 is shorted.Leave a comment:
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0V 0ΩLeave a comment:
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I removed both fuses. PPBUS_G3H is shorted to groundLeave a comment:
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