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Search: Posts Made By: piernov
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Today, 06:26 AM
Replies: 60
Views: 809
Posted By piernov
Re: Macbook A1932 Intermittent Backlight Issue 820-01521

This is normal. Looking at the battery connector circuit will explain why.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Today, 03:04 AM
Replies: 15
Views: 1,854
Posted By piernov
Re: Asus FX504GM shorted

PQ21 is clearly the one that's shorted. And there'll most likely be a short to ground on main power rail.

https://badcaps.net/forum/showthread.php?t=90356
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Today, 02:51 AM
Replies: 8
Views: 133
Posted By piernov
Re: HP Elitebook 840 G3 stuck on windows loading

Can try to boot Linux with the following kernel parameters kernel parameters to disable CPU power savings and GPU acceleration and show information messages:

idle=poll nomodeset...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 10:28 AM
Replies: 52
Views: 408
Posted By piernov
Re: HP ENVY 17 Motherboard Short help please

Why waste time on a dead PCH? (and many other things)
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 09:02 AM
Replies: 60
Views: 809
Posted By piernov
Re: Macbook A1932 Intermittent Backlight Issue 820-01521

That's not what they said.
However some machines since T2 have inconsistent behaviour regarding the presence of the battery (A2141 is known for that but I believe it's also a problem on some even...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 07:04 AM
Replies: 60
Views: 809
Posted By piernov
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 07:01 AM
Replies: 8
Views: 133
Posted By piernov
Re: HP Elitebook 840 G3 stuck on windows loading

Modern Linux LiveUSB images can typically work on both legacy BIOS and UEFI, as long as it's written properly to the USB drive of course with no tools messing with the bootloader.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-17-2022, 01:43 PM
Replies: 10
Views: 165
Posted By piernov
Re: Asus Zenbook Flip UX363EA killed by a cheap usbc power adapter

https://www.badcaps.net/forum/showpost.php?p=1046381&postcount=12
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-16-2022, 02:51 AM
Replies: 58
Views: 895
Posted By piernov
Re: Alienware 15 R3 Motherboard Issues Help Plz!

Looks like solder did no take properly on the pins. Remove MOSFET, put some fresh leaded solder on the pad, add flux and solder it back with hot air. To make the solder joints look even better, add...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-14-2022, 10:36 AM
Replies: 58
Views: 895
Posted By piernov
Re: Alienware 15 R3 Motherboard Issues Help Plz!

Gates are connected together so expected to have the same voltage on gate for all MOSFETs, and also show up on ACDRV.
PQ702/PQ708 are likely ok since current is flowing through body diode since they...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-13-2022, 07:27 PM
Replies: 34
Views: 629
Posted By piernov
Re: IC Marking Codes and Datasheets #2

ASC format does not contain part numbers unlike FZ.

https://www.badcaps.net/forum/showpost.php?p=1006584&postcount=2
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-13-2022, 08:22 AM
Replies: 10
Views: 199
Posted By piernov
Re: where to find a good supplier for smd parts

No it's not great. Insane amount of fake, counterfeit or low quality products as well as used or already broken products advertised as new.
Sometimes you don't even receive the product you have...
Forum: BIOS Requests ONLY! 08-13-2022, 08:12 AM
Replies: 7
Views: 177
Posted By piernov
Re: hp 17-cn0013dx BIOS Build ID does not match

Disable Intel RST or add Intel RST driver during installation.
Forum: BIOS & Schematic Requests! 08-13-2022, 06:11 AM
Replies: 2
Views: 69
Posted By piernov
Re: Msi h55m-e33

Download from MSI website.
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 08-10-2022, 08:58 AM
Replies: 4
Views: 123
Posted By piernov
Re: PS_NVVDD_EN_R low - circuit question

Reading the datasheet of the buck controller (uP9511?) can help. EN is not pulled-up externally, external circuit leaves it floating to enable or pulls it to ground to disable. Since there's a...
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 08-09-2022, 05:12 PM
Replies: 7
Views: 118
Posted By piernov
Re: iMac A1312 2011 27"

https://www.badcaps.net/forum/showpost.php?p=896261&postcount=3
Boardview and schematics are correct and have all the information…
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-09-2022, 02:57 PM
Replies: 23
Views: 1,528
Posted By piernov
Re: ASUS Tuf Fx505dd rev2. Does not start up, does not charge the battery.

https://badcaps.net/forum/showthread.php?t=90356
https://badcaps.net/forum/showpost.php?p=989502&postcount=2
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-09-2022, 02:53 PM
Replies: 9
Views: 215
Posted By piernov
Re: Macbook 820-2849 c7404 - Capacitor Replacement

PPBUS_G3H is 8.6V max on 820-2849.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-09-2022, 02:50 PM
Replies: 2
Views: 115
Posted By piernov
Re: Asus S400C — VGFX Core no voltage

https://logi.wiki/index.php/User:Piernov#I_am_missing_VCCAXG.2FVCCGFX.2FVCCGT_.28iGPU_core_voltage.29.2C_how_do_I_solve_it.3F
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-09-2022, 02:49 PM
Replies: 24
Views: 402
Posted By piernov
Re: MacBook Air 2018 A1932 820-01521 Not turning on.

Revive/update keeps data, restore wipes data. In case of corruption or damaged SSD, data could already be gone anyway.
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 08-09-2022, 02:44 PM
Replies: 7
Views: 118
Posted By piernov
Re: iMac A1312 2011 27"

https://logi.wiki/index.php/Board_Number_by_A_Number#A1312_iMac_27.22_Unibody
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 08-09-2022, 02:40 PM
Replies: 2
Views: 95
Posted By piernov
Re: Zotac 1080Ti Am Extreme missing components

https://www.badcaps.net/forum/showpost.php?p=1046381&postcount=12
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-09-2022, 05:25 AM
Replies: 6
Views: 199
Posted By piernov
Re: DA0U8AMB6A0 REV A No display, maybe dead processor?

Most parts connected to HWPG are no stuff (can be confirmed by looking at the board). Weird but may not be used at all on this platform. S0IX_PG on the other hand is at least connected to a few power...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-09-2022, 04:59 AM
Replies: 9
Views: 215
Posted By piernov
Re: Macbook 820-2849 c7404 - Capacitor Replacement

Used random SMD tantalum capacitors for £3.50 each? That's a total ripoff. Take one off of a donor board yourself, or ask your local electronics supplier for a new one.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-07-2022, 11:25 AM
Replies: 8
Views: 1,073
Posted By piernov
Re: Dell Latitude E5540 power On than Off after 5 seconds.

https://www.badcaps.net/forum/showthread.php?t=90356
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