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Thanks for your help I think bad SMC because it does not provide the pulse of SMBUS_CHGR_SDA... PP3V42_G3H 3,41 with charger & with battery U7000 pin : 1 0v 2 0v 3 4,7v 9 3,8 12 3,41 13 3,41 14 2,26 15 0 17 2,6 19 5,06 20 5,06 27 20v 17/18 resistance : 2.8 ohm 27/28 resistance : 20.1 ohm Thanks

Hello, I have this board 820-2879 that I persisted in repairing ... It works on battery On charger it supplies 2.6V on PPBUS_G3H SMBUS_CHGR_SDA do not pulse SMBUS_CHGR_SCL pulse I replace R5280, U7000, D6950 I think it is a faulty SMC but I want to know your opinion before putting in the...

In the company we have a lot of A1706 / A1708 screens with similar problems. There appears to be a problem with the PCB of the screen. Are there any solutions or devices for calibration? Most are in very good condition with some random issues like the blue streak in the photo ... I have...

Hello, Today I'm working on a board that came back from a customer because it no longer works after about 3 days ... I cleaned the board so well that I no longer know what was repaired ... It seems that there was a short circuit on PP1V2_S3 because traces of soldering shows that I injected a...

I changed the SMC and checked for continuity. The problem persists. I replaced the BIOS, the problem persists ...

I checked the diode mode everywhere I have 0.40-0.50 v I deduced that the continuities are good ...? (but maybe my theory is silly?) I couldn't confirm the connections with SMC, do you want me to remove SMC for verification? I was wrong sorry it is not SPI_MISO_R but PM_CLKRUN_L burnt. I...

In fact at the beginning the wifi worked alternately, now it no longer works ...

Thank you very much thanks to you I was able to repair 2 cards indeed the problems were linked to U5110 and its continuity. I believed the presence of PM_BATLOW_L eliminated the SMC problems ... Thanks for your help :)

Hello, I have 820-00923-05 3.3ghz motherboard The board seems to be working fine in safe mode. However, it does not start in standart mode. The verbose says: ** In memory panic stackshort succeeded ** bytes traced 222160 ** transmitting kernel state, please wait : 100.. recorded panic...

Sorry I have inverted the measurements on the 2nd side of the chip. Here are the good ones: PIN 1: 3.3V PIN 2: 0v PIN 3: 3.3v PIN 4: 0v PIN 5: 0v PIN 6: 0.4v - and 1.2v after 30 seconds (SMC_WIFI_PWR_EN) PIN 7: 0v PIN 8: 3,3v On a functional board I measured only 3.3V on SMC_WIFI_PWR_EN...

Always similar lines

I have remove J6100 the problem is already present Sorry i forgot, it's an 820-00165 my favorite

Ok i just heat up and boot without ssd it still hangs. I didn't use any feed. Do you want me to put flux on and remove silicone from around CPU?

Sorry my english is bad i'm french... I just checked all of the SPI Bus series termination resistors. All resistances are good. I did not notice any anomaly I inform that J6100 has suffered liquid damage. SMC_TCK and PP3V42_G3H shows traces of burns on J6100 Thanks for your help 2informaticos :)

AVREF_SMC = 0V with fast pulse every 2 seconds pins 27/28 = 21,1 ohm pins 17/18 = 3,2 ohm CHGR_AMON 0,029v CHGR_BMON 0v

Probably a liquid sign, the card comes from an after-sales service of a card already repaired a few weeks ago ... I do not know more, I have already cleaned it very intensely, yes already tested in several different airports. Here are the measurements: PIN 1: 3.3V 2: 0 3: 3.3 4: 0 5: 3.3 6: 0...

Hello it's me again, yes I have a lot of problems this week ^^ I have an 820-00165 board which has been restored. About 10 power rails were repaired ... Now it starts and blocks when starting. First 3min on screen 1 and then infinitely on screen 2 ... The problem persists during Mac OS...

Hello, On this board all the power rails for the PM_SLP_S4_L power supply are present but the CPU does not send the signal. PPBUS_G3H 8,58V PM_BATLOW_L 3,31V SMC_RESET_L 3,39V SMC_PM_G2_EN 3,42V SMC_ONOFF_L 3,42V PM_RSMRST_L 3,25V PM_PWRBTN_L 3,41V PCH_DSWVRMEN 3,3V PCH_INTRUDER_L 3V...

Yes, i have just test and this board work on bypass SMC mode

Hello, I don't know what to do on this board anymore ... The wifi works randomly, I cannot determine why ... I measured the diode resistance linked to the wifi system but I cannot find any anomaly. What can you advise me to measure? Thanks in advance David