Zparts01
Senior Member
Last Activity: 09-29-2024, 07:32 PM
Joined: 11-10-2021
Location: Ottawa, ON
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Power rail is not being enabled or not being enabled mon2. Does this mean T2 is dead? -
Thanks ugamazing! I was hoping it was not the T2, but seems that you may be correct. I did try to read the voltage to ground of pin #2 at P1V8G3S_EN and it was cycling from 0.00v - 0.01v and that's it. PP1V8_G3S is reading 0.320 when measuring resistance to ground. Is that the last of the testing I can to verify it's the T2?Leave a comment:
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I have been so busy I haven't been able to get to it, but thanks mon2 I will check this as soon as I can and write back!Leave a comment:
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Does that give you any idea what it could be?Leave a comment:
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The readings are ...
SMBUS_3V3_BATT_SCL ; Cycling back and forth between 3v3 and 2.75
SMBUS_3V3_BATT_SDA ; Cycling back and forth between 3v3 and 2.75
Zero voltage to ground on PP1V8_G3SLeave a comment:
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Hi mon2! The readings are ...
I2C_THMSNS_SCL_R0 = 0.489
I2C_THMSNS_SDA_R0 = 0.488
I2C_SENSE_SCL = 0.519
I2C_SENSE_SDA = 0.519Leave a comment:
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Thanks mon2! I will do this for sure and post the readings once I have them. I'm off for a week so can't get at it right now! Cheers!Leave a comment:
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Hi mon2! Thanks for your reply. The readings for I2C_PWR_SDA_R2 and I2C_PWR_SCL_R2 are looping from 0v - 1.8v over and over again. The other areas you mentioned have zero voltage.
I2C_THMSNS_SCL_R0 = 0v
I2C_THMSNS_SDA_R0 = 0v
I2C_SENSE_SCL = 0v
I2C_SENSE_SDA = 0vLeave a comment:
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I guess no one has any idea's what I might try next?Leave a comment:
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Thanks Stephen, but you may have missed that I have already tried a brand new known working battery. That was not the issue. I was trying to find out what the resistance to ground on PP2v5_NAND_SSD_0 should be.Leave a comment:
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Anyone?Leave a comment:
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Does that number look correct?Leave a comment:
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That's with red on ground and black on component. Other way around it starts at 11.1 and starts to drop.Leave a comment:
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31.32 ohms.Leave a comment:
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Resistance to ground on [B]PP2v5_NAND_SSD_0[/B] is .427Resistance to ground on [B]PP2v5_NAND_SSD_0[/B] is .427Resistance to ground on [B]PP2v5_NAND_SSD_0[/B] is .427Leave a comment:
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Thanks mon2 I will have to check it and get back to you!Leave a comment:
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Hi mon2! The voltage on the usb C meter is 20v and 0.01a, then climes to 0.11a for a sec, then loops back to 0.01a. The reading is the same for both usb C ports on both sides. I am using the 61W USB-C Power Adapter and cable that came with the MacBook, but I have also tried another 96w Apple Charger as well with the same results. Also, might be worth nothing that it's the exact same readings even if the battery is connected or not.Leave a comment:
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Just to add, my voltages for the following all are good, but they are not stable, they go to the correct voltage, then to 0v looping. They loop every few seconds. Here are the measured voltages ...
L7660 PP3V3_G3H 3.3V
L7806 PPVDDCPU_AWAKE 0.75V
L7810 PPVDDCPUSRAM_AWAKE 0.8V
L7811 PPOV82_SLPDDR 0.82V
L7813 PP1V8_SLPS2R 1.8V
L7814 PP1V1_SLPS2R 1.1V
L7817 PPOV9_SLPDDR 0.9V
F7000 PPBUS_G3H 12.2VLeave a comment:
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Sadly with a new battery no change at all. I am stumped. What else could it be?Leave a comment:
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Thanks mon2! I was thinking about the battery, but I had seen so many post for this board that say you can restore in DFU without a battery or power supply connected that I just wasn't sure if that could be it (I've tried all the different ways, but I do think the battery is almost completely flat anyway). I do use Mobile Sentrix Canada for most of my parts so I guess I will give it a try and let you know!Leave a comment:
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