Recent content by DavutAmana

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