Recent content by GeniusPlace

No, I didn't do that. How can I use this pad if it is under the motherboard when I put it back in the case to connect the battery? Can I use the R8015 component to do this test?

So if I understood your query correctly, you want me to inject 20V on the PMU_ONOFF_L line to see if it tries to turn on. For example on R8015. That's right ?

When the battery is connected to the motherboard, the USB-C meter shows me 5.2V , 0.084 A and 0.44W. I tried to find the SMC_ONOFF_L on the schematic, but I can't find it. Could you please explain to me what it is and what exactly I should do with it ?

Hello, Here are the tension and diode mode requested: PPBUS_G3H : 12,3V 407 ohm 3V3_G3H_RTC_X : 3,3V 093 ohm PP1V8_AWAKE : 1.79V 387 ohm PP3V3_AWAKE : 3.37V 634 ohm PP1V2_AWAKE : 1.19V 524 ohm PPVDDCPU_AWAKE : 0.7V 014 ohm PPVDDCPUSRAM_AWAKE : 0.79V 090 ohm PP1V8_SLPS2R : 1.79V 380 ohm...

Thanks, I will check right now. just, what does LDO means ?

Hello community! here I have a problem with a 15 inch MBP A1707, which does not turn on. I checked the voltage, and it's stuck at 5v 0.02 amps for all charging ports. So my question is: how can I be sure it's the CD3215 chip? And which of the 4 chips is faulty ? There is no liquid...

In this case, for a macbook that no longer turns on, and for which we do not know the exact cause of the short circuit. What do you recommend that I do ? Where do I start to diagnose it ?

Ok, and which software do you recommend for bitmaps and schematics ? Currently I use XinZhiZao and Refox software, do you use another one ? Honestly, I can't tell you more... I'm sorry. What I do know is that this device was dropped off to us for a screen replacement. We tested sending the...

I would really like to repair this macbook but I think I don't have the right software or the right knowledge to do it. So I joined this forum to learn as much as possible. That's why I would like to know what software you used to guide me as our comments ? Because the software I use (XZZ and...

Thanks for your feedback. In this case, what would you do ? What software do you recommend I use to check the diode values? I use XZZ or Refox, but it's incomplete...

Hello, I removed U8400 and I replaced it. Unfortunately the MacBook doesn't turn on. BTW,the diode value are stable : C8440 : 0410 ohm C8441 : 0399 ohm What do you advise me ? How are you able to check the diode value ? I mean, which tool do you use ?

I removed U8400 and the diode value are : C8440 : 0410 ohm C8441 : 0399 ohm Could you please confirm to me that U8400 is the same as the U7700 you are selling here ? https://store.rossmanngroup.com/b4-lp8548b1sq.html

Yes, that's the same diode value C8440 : 0001 ohm C8441 : 0013 ohm

When I remove C8440, U8400 heats up a lot. BTW, I wish you a happy new year 2022 :)

PPBUS_G3H : 435 ohm C8440 : - pin 1 : 0001 ohm - pin 2 : 0000 ohm C8441 : - pin 1 : 0013 ohm - pin 2 : 0000 ohm It looks like the U8400 heats up a lot too.