vdrokko99
Member
Last Activity: 12-09-2024, 03:13 PM
Joined: 04-23-2022
Location: Budapest
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I removed two resistor, R7013, and one more, i dont remember the exact name, both of them are non-exist on the picture shown. And a board starts. Every voltage was ok, but black screen. After C9560 replace, looks good. There is picture, and boot. I don't understand why R7013 exist on schematic. Thank you for your help, and advice!... -
CHGR_CELL should be 3.42V, but usig 50% voltage divider, this value is not passible.
So i started to googlin' for a hi-res picture of the logic board and seems like there is no R7013
If no R7013, no voltage divider. I will remove R7013 and I will measure PPBUS_G3H again....Leave a comment:
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Sorry, PP5V1_CHGR_VDD is 5,0V, sorry.
Today i will order 10 pcs of ISL from AliExpress. I will replace again. Thanks for advice, as soon as arrives the new chips, and replace, i will post....Leave a comment:
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I started to measure the voltage divider resistors for CHGR_CELL, R7012 is 1k as is should be but R7013 was 3kOhms instead of 1kOhm. I replaced to 1k, and now the voltage on CHGR_CELL is 1.7V
CHGR_CELL 1.7V is ok?
PPBUS_G3H is still 4VLeave a comment:
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With removed F7040 is still 4V. Resistance to GND on F7040 Pin 2 is 12.2kOhm....Leave a comment:
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I noticed signs of previously maybe u7000 was replaced. So is removed and resolder. Now i have pp5v1_chgr 5V. Now ppbus_g3h is 4V.
Pin 27/28 resistance is 20 ohms
Pin 17/18 resistance is 2.3 ohms
Pin 6 CHGR_CELL 2.55V
aaand..
SMBUS_SLC_5_G3_SLC is pulsating 0-3.4V app. 1Hz....Leave a comment:
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0.481V in diode mode, red probe to gnd....Leave a comment:
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MacBook Pro 15" 2010 820-2850 no PPBUS_G3H, green light on
Hello,
I'd like to ask help to repair 820-2850. There is green light, but not turning on because the PPVBUS_G3H is 0.5xxx V. I already measured resistance to GND, but no short ciurcuit. I did a few measure next to U7000,
R7020 ok,
R7050 ok,
F7040 ok,
SCM_RESET_L 3,4V
CHRG_DCIN 16V,
PP5V1_CHGR_VDD, and PP5V1_CHGR_VDDP is 0,5V but no short to GND
I think the missing PP5V1_CHGR_VDD is the problem which is comes from and go to the U7000.
This missing voltage means a defective U7000 or cause other missing voltage?... -
Yes... I bought a faulty MBP 15 2010 with the original 85 watt charger. Aaaand. Using the original original charger, the board turned on
But.. Of corse, AMD GPU is faulty, so now i ask for a permanent soulition.
Thank You for help....Leave a comment:
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Thank you for your help, ASAP i will buy an other charger, and i wil try with....Leave a comment:
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Sorry, my bad. PP5v_SUS is 0v. I measured on wrong pad
also PM_SLP_SUS_L is 3.3V,
SMC_BATLOW_L is 0vLeave a comment:
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pp5v_sus 5v
pp5v_s3 resistance to gnd is 40 kohm
but i dont find p5vs3_en in boardview. In schematic i found p5vs3_en on EN1 pin of U7201. in boardview name is pm_slp_s4_l.
pm_slp_s4_l 0VLeave a comment:
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[B]PPBUS_G3H[/B] to ground is 12.56V[B]PPBUS_G3H[/B] to ground is 12.56VLeave a comment:
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MBP wont turn on Only green light on charger
I have a similar problem... I got an old MBP for free, but wont turn on... Only green light on charger. I measured these voltages. If i try to do an smc reset using keyboard, nothings happen, wont go out the green led. I dont know how to continue, please help me.
[B]SMBUS_SMC_BSA_SCL 3.5V
SMBUS_SMC_BSA_SDA 3.5V[/B]
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Onkyo TX-NR1010 DSP flash dump
Hi everyone! I have to change the TI DSP IC in my Onko TX-NR1010 reciever
. I think (but I hope not) the NAND flash needs to be flash at all. Does anyone have NAND Flash content?
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Re: New Members - please post your introductions here
Hello everyone! Greetings from Hungary!Leave a comment:
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