Recent content by Chip Chip

All Pins meassured and showing OL ​

All lines checked. There is continuity.

I´m working on the 820-2330 board where ethernet is not recognized. When i plug the ethernet cable in it´s not showing ethernet (message: no ethernet cable plugged in) any ideas?

Solved ! C7771 replaced and machine is working fine! Thank´s Duke !

Here is another crap of board 820-2330 Green light is there but machine doesn´t start. PP3V3_S5 is OK / PP1V05_S5_MCP is not present (C7771 problem?) Any ideas?

Thank you Duke ! DANKE ! :)

Hmmm.... On PIN 1 = 240 OHMs / PIN 4 = 11 OHMs Just a question....Do you speak german? :)

just did this but no result :(. The same voltages

Pin1 = 3.3V / Pin 4= 0V

Solved! Indeed it was a corrupt OS Thank´s!

Oh man! I just checked it today. And yes, the RTC voltage is there...... I tried to power on the machine with power on pads but nothing PM_SLP_S4_L still missing.

Hi Duke, on this board i had no power ( no green light). A little bit of water was on the LIO board. On the LIO board i found a corroded contact point. After fixing that now i have a green light. The logic board itself looks absolutely fine. But machine is not powering on. My meassurements show...

Hi, check PM_DSW_PWRGD which comes from the SMC. Present or not?

Hello! I´m working on the 820-2523 board. The problem is when you press the power button the Apple logo appears and after that i get this picture. Is this a cap like in 820-2850? any ideas? Thanks!

MDY i didn´t check it anymore. I follow Duke´s advice. It´s better to not put my hands on this graphic chip and change it when chance is high to get a problem later on. Therefore the customer will get this machine back.