Recent content by syslan

Hi, the board doesn't turn on. I post these voltages. PP3V42_G3H=3.4V PP3V3_S5 = 3.3V in u7940 RSMRST_PWRGD = UNSTABLE S5_PGOOD_CT= 0.3V PP3V3_S5 =3.4V PP3V42_G3H=3.4V

I had the resistor as it was originally and I have 3.48V on pin 1 of R5000 and 3.48V pin 3 of u5010. I changed it to 33k and this happens: With U5010 already on R5000 (pin1): 3.48V R5000 (pin2): 2.70V U5010 (pin5): 2.7V U5010(pin3): 3.48V when i remove U5010 these are the values. R5000...

update... I changed SMC and now I have the following values: 3V42_G3H = 3.48V PPBUS_G3H = 12.57V SMC_RESET_L =2.6V 3V3_S5 = 0V but when i remove U5010 now if it goes up to 3V (SMC_RESET_L =3V). for this reason also change U5010. but still the same (2.6V)

I removed R7000 and U5010 and checked if it goes up to 3.3V but it doesn't go up. It's the same. I'll proceed with the SMC I guess. I'm still without 3V3_S5. 3V3_S5 = 0.06V

I removed U5010 and it's still low (2.09) Then swap R5000 for a 33k resistor. now pin 5 (SMC_RESET_L) = 2.8V. but everything is the same

I post the new values 3V42_G3H = 3.48V U5010 voltages: 1- 3.48V 2 - 0V 3 - 3.48V 4 - 2.85V 5 - 2.09V 6 - 2.47V 7 - 3.47V 8 - 3.30V

you're right 3V42_G3H = 3.48V U5010 voltages: 1- 3.48V 2 - 0V 3 - 0V 4 - 0V 5 - 0.15V 6 - 0.05V 7 - 0V 8 - 0.08V

sorry, I was wrong. PPBUS_G3H = 12.29V I changed u6990 and u7941 and everything is the same

"First, PPBUS_G3H is incorrect?" It's a bit low right? I'm testing just the board with nothing connected. 3V42_G3H (F7040) = 12.29V stable SMC_RESET_L = 2.16V When I measure SMC_RESET_L something weird happens. The multimeter goes up from 2.16V to 2.5V slowly

hello. I have a 3115-b motherboard. Apparently no corrosion damage. Green light on charger after about 10 seconds, pulling 0.04A. missing PP3V3_S5 (0V) without short circuit to ground Voltages for U7200: 16 - 12.29V 13 - 2.12V 3 - 0V 8 - 0V 17 - 0.4V 6 - 0V VOLTAGES for U7941: 4 -...

Sorry about that. Did not notice it. Fixed. The board is 820-4924a

Macbook keyboard and trackpad not working in OSx A client brought me a Macbook A1502 with a non-working keyboard and trackpad, but when I decided to test them in another OSs (Linux MX and HBCD in my case) and they work perfectly. I tested them in High Sierra and Big Sur in safe mode but they...

I have a motherboard (820-00431-002) that has a missing resistor. I would like to know the value of that resistance. I can't find that information anywhere. The resistor is connected to the ISL6372 pin 6 chip. I'm going to post the photo of the board with the missing resistor. Can someone help...

Hello. i have the same problem the ssd is not recognized. there is no damage or traces of liquid. I already tried with a good ssd and they are the same values. these are the values of u3740. pin 1: 3.42V pin 2: 1.42V pin 3: 2.25V pin 4: 3.42V pin 6: 2.16V pin 7: 0.01V pin 8: 0V already check...

I already checked and R7130 is fine and C7130 measures the same as the same capacitor from another good board