Instafixx
Badcaps Veteran
Last Activity: 11-13-2024, 07:02 AM
Joined: 07-26-2022
Location: Kolkata
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Microsoft Surface Pro 7 +
Hi , I am new to surface repairs. Machine pops up the Windows Logo whenever power button is pressed and goes away after 2-3 seconds. What can be the issue ? Please guide. -
I plugged in the charger and did the thermal scan. Nothing.
i am using a 96W adapter. Does this machine boot up without a battery? -
Hi,
I have a similar issue.
I get the charging sign but nothing further, The current draw drops to 0.03Amps....Leave a comment:
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Macbook A2337 - Not entering DFU
Hello ,
Namaste.
I had a Macbook come in for right. speaker not working. I tried changing audio flex / the audio board - didnt work.
I went on to replace UR930/40 - still the same.
So i decided to pack it and return in.
Now suddenly after 2 days it is not booting into the OS. i get the Apple Logo and the exclamation restore sign.
I tried entering DFu via keyboard - but no luck.
I tried the jumper method but still the same.
SOC_DFU_STATUS is 1.22V ( Goes high)
My host mac is fine as i have done DFU revive today... -
Nope. Had to go for a motherboard replacement.Leave a comment:
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Microsoft Surface Pro 4 1724 No Power
Hi this is my first time reparing a Surface.
I followed the schematics and did some youtubing.
I get 14V on Pin 1 of PD5501
And Pin 2 getting 0.3V.
I get white light on the charger but nothing more.
How do i proceed further ?? i have the boardview -
Re: Macbook A2338 Amp Meter Reboots
Not switching on again. how to apple diagnosticsLeave a comment:
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Macbook A2338 Amp Meter Reboots
Hello,
Namaste.
I have a Macbook A2338 that came in for turning on issue. It turned on once when i had it but then again went off. The amp meter but bootloop. The board was clean - no dust - no green .
I performed a DFU Revive. Got the error 4042. Assumed BAD SSD. But it turned on , worked well for 1 day and again went off.
Anything can be done ?The customer needs data -
Re: 820-00165 all_sys_pwrgd low
Removed Q8150. Issue Solved...Leave a comment:
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Re: 820-00165 all_sys_pwrgd low
Red to Ground
Pin#7 is 7.5K Ohms
Pin#6 is 160K Ohms
Pin#5 is 15.75K Ohms
Pin#4 is 1.5M Ohms
Pin#3 is 1.1k Ohms
Pin#1 is 20.7k Ohms...Leave a comment:
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820-00165 all_sys_pwrgd low
Hello,
I have a Macbook 820-00165. Customer said it isnt turning on. When it came to me it turned on just once for sometime and the dead.
Upon inspection i found corrosion at R8159 R8158 R8151 R8152.
Replaced them. Still no success.
I checked all the Power Rails.
I am getting PM_SLP_S3_BUF_L 3.3V at R8167 but ALL_SYS_PWRGD is at 0.6V. Thought it looked fine i replaced R8167 too.
Checked from crap below Q8150 as the corrosion was below it. But nothing there too.
Macbook is drawing around 180Amps. -
Re: A1466 PPBUS_Shorted
Found another Capacitor Shorted. Replaced. ResolvedLeave a comment:
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Re: A1466 PPBUS_Shorted
Diode Mode Reading of Pin#2 (Meter Set to 2k Scale)
Red to Ground .423
Black to Ground 1.302 ....Leave a comment:
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Re: A1466 PPBUS_Shorted
Without the Fuse.
Voltage on Pin#2 is 0.7V
Voltage on Pin#1 in 8.6V...Leave a comment:
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A1466 PPBUS_Shorted
Hello,
Namaste!
I have a Macbook A1466 820-00165 with a PPBUS_G3H shorted to ground.
Removed the Fuse and i checked all the tantalum capacitors.
Found the shorted one. Removed it.
Now no Short.
Replaced the capacitor. Replaced the Fuse, but still getting only 1V on PPBUS_G3H.
I thought maybe the fuse was bad. Hence replaced it as well. But as soon as i plugged in the charger, the fuse burned.
What can be the issue here ? -
Re: 820-00165 SMC Issue
Where else can i get these chips that will work?Leave a comment:
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820-00165 SMC Issue
Hello,
Namaste!
I had a Macbook A14666 come in for not getting on.
PPBUS_G3H was at 8.15V. Did a SMC Reball and the board started working.
After 3-4 days it again went on.
Again SMC reball and again it starts working but goes off again in 2 days.
I assumed that the SMC is bad. Didnt have a donor board so i ordered SMCs from china. The chip number is the same. After installing the new chip i only get Fan Spin at Max and No Light.
Do these require any programming? Anyone has any experience in this?
Also... -
Re: Macbook A1932 One Port stuck at 5v.
It was a CD3215 Issue. To my knowledge if one goes bad both stop working but here only the bad chip stopped working while the other was okay.
Replaced the malfunctioning chip and the Macbook works okay now.
Leave a comment:
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Re: Macbook 820-00165 will not fully boot
One of the components that fell off was R5117 which is the CPU_THRMTRIP_3V3 line resistor.
Not an expert but the name suggests that it is thermal monitor of the cpu and will trip the cpu when too hot?
Is that the case with my Macbook as the fan becomes fast before switching off as if the machine becomes too hot.
When the fan is spinning and the machine is booting up
CPU_THRMTRIP_L is at 0.02V.
When the fan stops and the machine is off
CPU_THRMTRIP_L jumps to 3.3V....Last edited by Instafixx; 08-23-2023, 01:21 AM.Leave a comment:
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Re: Macbook 820-00165 will not fully boot
It is not happening.
Tried SMC Bypass.
Tried Safe Mode.
Its still the same.
It boot up.
Login screen appears.
Fans becomes fast and it goes off....Leave a comment:
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