ndarjo21
Senior Member
Last Activity: 04-10-2025, 02:12 AM
Joined: 11-19-2021
Location: Magelang
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hi ugamazing, thanks for answering. but i dont need the data. i just need to make sure this macbook can turn on and usable even without discrete GPU. thanks for the suggestionLeave a comment:
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my touched probes is 00.00ohm in resistance mode, and 0.000v in diode mode. it is uni t ut60s. yeah, it same as measuring GPU and VRAM rail.
the current climbing slowly to 3.8amps if battery connected. if not connected, it will go from 5v, then 20v 0.0 amps up to 0.4amps, then goes down to 0.07amps, then 0.00amps 20vLeave a comment:
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thanks mon for answering, but isnt it clear that 0 ohm in PVDDIOMEMGPU, PPSOC_S0_GPU and PPGFX tell us that the discrete GPU is dead?
sadly i dont have another macbook in my place, so i couldnt test that + i dont need the data btw. i will check if capslock LED respond or not. but i guess it wouldnt because the short make the PGOOD signal not come up. just guessingLeave a comment:
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Macbook Pro 16 2019 A2141
DEVICE : LAPTOP
BRAND : APPLE
MODEL : A2141
PROBLEM : Not show picture, the click in touchpad can clicked. so it seems the device power on i guess.
it can charge, 20v 3.8 amps when battery connected
MEASUREMENT :
20KOHM L7600 P5VG3S
27KOHM L7660 PP3V3
54.9OHM L8102 PP0V95
33OHM LA950 PPVDD075_GPU
0.00OHM LA870 PVDDIOMEMGPU
0.00OHM LA860 PVDDIOMEMGPU
0.00OHM LA850 PPVDDCIMEMGPU 0.00OHM LA750 PPSOC_S0_GPU
0.00 OHM LA710 LA740 LA720 LA730 PPGFX
121 OHM L7701 P1V2
19.8OHM LA7330 CPUVR_SWSA
2.5OHM... -
i2ite ec read/write using ft232h
hi all, i have i2ite written in python by c0d3z3r0. it using for read/write ITE SIO/EC chip via SMBUS. for now, i havent try it because i couldnt buy ft232h in my country. supported device to do this is(based on pyftdi):
FT2232C/D, FT232H, FT2232H, FT4232H, FT4232HA.
i attached the link to the i2ite c0d3z3r0 give to me. anyone here have that device above and can test it for me? -
after talking with imsprog maintainer, it seems the ch341a unable to send the initial waveform to make the EC get into debug/DFU mode because the in gpio mode, it will be very slow in ch341a sda and sclLeave a comment:
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after talking with imsprog maintainer, it seems the ch341a unable to send the initial waveform to make the EC get into debug/DFU mode because the in gpio mode, it will be very slow in ch341a sda and sclLeave a comment:
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hi piernov. the ITE 8xxx series can be programmed using i2c/smbus interface isn't it, i read in the zephyr wiki, + svod4 can use that too, i also read in i2ite github project (using FT232H) can read/write ITE chip. the writer also write a program to flash the ENE ec using FTDI device. they all use i2c interfaces right? so, because ch341a can using i2c interface, it is possible to flash ITE ec using it if someone write correct program? you can poke dexas or LED to communicate with me. hehe...Leave a comment:
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hi, i recently wandering around to read this kind of info. if the FT232H is used in the I2ITE, the codezero also write for reading ENE one. the FT232H is just basically usb to i2c devices right? so is it possible to use ch341a which have capability to do i2c communication to read/write ITE ec chip with correct coding/programming?...Leave a comment:
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yes, i know that its not your task, i am just curious if you have one or know someone who have one. thanks for the free version of flexbv btw. sadly that link, and another link you share didnt include a smartphone. only iphone thing....Leave a comment:
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do you plan to upload for smartphone one? or perhaps know who already have it?...Leave a comment:
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thanks. perhaps for this PSU, the feedback for the APFC ic is the VSENSE. maybe i will try do it in the future and test with heavy load...Leave a comment:
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how do you disable the PFC circuit if the PFC controller integrate with PWM controller. will it work in 80% load?...Leave a comment:
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Re: Hot air station - 858D opinions?
The wide size preheater will help desoldering.Leave a comment:
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Re: Turn on 1 minutes and then turn off. Lenovo ideapad 110-14ast
anyone have the schematic?Leave a comment:
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Re: Turn on 1 minutes and then turn off. Lenovo ideapad 110-14ast
PL1901 should 1.O5V, but only 0.95 V
PL402 just 15 mV
PL401 should 1.35V, but only 0.8 V
PL1003 0.9 volt(the value not stable), it seems should 0.95 volt
PL2402 1 volt (not stable and max is 1.2v), it seems should 1.2 v
what can cause the voltage drop, the voltage from the charger is stable in 20v. the other coil also stable which is 3v and 5v always. can bad capacitor make the voltage drop and not stable?Leave a comment:
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Re: Couldnt Boot Laptop HP 14-bw087tu
Thank you so much, i will try thatLeave a comment:
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Re: Couldnt Boot Laptop HP 14-bw087tu
hi, i wanna ask, is this bios binary quad enable or not? if yes, then can i use W25Q64FVSSI[B]G[/B] which is not quad enable from the factory? cause the schematic say it W25Q64FVSSIQ , and the original bios ic is MX25L6473F M21 08G. and it says that the macronix ic is QE enabledRe: Couldnt Boot Laptop HP 14-bw087tu
hi, i wanna ask, is this bios binary quad enable or not? if yes, then can i use W25Q64FVSSI[B]G[/B] which is not quad enable from the factory? cause the schematic say it W25Q64FVSSIQ , and the original bios ic is MX25L6473FLeave a comment:
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Re: Couldnt Boot Laptop HP 14-bw087tu
i have check the voltage of bios chip, 3.3v in pin 1, 7 and 8. the other is low, in milivolt.Leave a comment:
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