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Search: Posts Made By: piernov
Forum: Schematic Requests ONLY! Today, 06:26 AM
Replies: 2
Views: 47
Posted By piernov
Re: MacBook Air 1466 820-00165 I/O board schematics

https://logi.wiki/index.php/Schematics_and_Boardviews_Availability#I.2FO_Board


Use 820-3213 for reference.
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals Yesterday, 07:40 AM
Replies: 12
Views: 218
Posted By piernov
Re: Asus P2B | Slot 1 + Pentium II | no power

Again, low resistance reading can be normal on power rails powering main chipset/CPU/GPU/etc. power rails.
Need to compare with a board with a similar architecture to be sure.
Forum: Schematic Requests ONLY! Yesterday, 02:33 AM
Replies: 47
Views: 9,308
Posted By piernov
Re: Macbook Air A2337 Schematic & SilkScreen 820-02016 Schematic & SilkScreen (Prov

https://github.com/OpenBoardView/OpenBoardView/releases/tag/9.0.3
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-02-2022, 03:37 AM
Replies: 16
Views: 253
Posted By piernov
Re: Macbook Pro 2010 Not Charging

https://badcaps.net/forum/showpost.php?p=1002350&postcount=2
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 07-01-2022, 02:28 AM
Replies: 12
Views: 218
Posted By piernov
Re: Asus P2B | Slot 1 + Pentium II | no power

https://www.badcaps.net/forum/showthread.php?t=88758
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-30-2022, 06:21 AM
Replies: 9
Views: 146
Posted By piernov
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-29-2022, 02:44 AM
Replies: 5
Views: 158
Posted By piernov
Re: Toshiba Satellite A100-525 Power Issue

Board is "San Antonio 10E" (AMD chipset) not "San Antonio 10" (Intel chipset).
Forum: Schematic Requests ONLY! 06-25-2022, 05:06 PM
Replies: 6
Views: 1,062
Posted By piernov
Re: 820-01124 RIO MacBook Air 13" A1932

https://github.com/OpenBoardView/OpenBoardView/releases/tag/9.0.3
Forum: Schematic Requests ONLY! 06-23-2022, 05:41 AM
Replies: 7
Views: 15,431
Posted By piernov
Re: Need schematic HannStar J MV-4 94V-0 0737

https://www.badcaps.net/forum/showthread.php?t=88758
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-21-2022, 09:57 AM
Replies: 4
Views: 158
Posted By piernov
Re: A1708 5V chip on boardview missing

https://logi.wiki/index.php/Schematics_and_Boardviews_Availability
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-21-2022, 07:36 AM
Replies: 4
Views: 1,079
Posted By piernov
Re: Dead 820-01598 - voltages present but no boot

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 06-21-2022, 02:16 AM
Replies: 7
Views: 203
Posted By piernov
Re: How can we prevent 19v entering SOC?

It's not easy. TVS diodes are not perfect: they do not act instantaneously, the I/V slope isn't perfectly straight, they do not have tight tolerances and they'd need to dissipate an insane amount of...
Forum: BIOS Requests ONLY! 06-20-2022, 06:26 AM
Replies: 1,630
Views: 253,807
Posted By piernov
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-20-2022, 01:47 AM
Replies: 1
Views: 121
Posted By piernov
Re: IC Marking Codes and Datasheets

https://www.badcaps.net/forum/showthread.php?p=1052300#post1052300
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-18-2022, 07:05 AM
Replies: 5
Views: 196
Posted By piernov
Re: Alienware 17 R3 (LA-C912P) Powers on then powers off after 4-6 seconds

The M5010/M5030 is a completely different machine with a well known garbage AMD RS880 northbridge that dies randomly, and as usual it's never the solder, the chip itself is bad.

Not everything is...
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 06-18-2022, 05:19 AM
Replies: 16
Views: 382
Posted By piernov
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 06-18-2022, 05:16 AM
Replies: 3
Views: 186
Posted By piernov
Re: Need help identifying the missing cap on the back of an i5 3570

There are other capacitors that look damaged, they are more likely to be the cause of the problem.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-16-2022, 06:16 AM
Replies: 48
Views: 1,278
Posted By piernov
Re: Acer A315-55G / DA0ZAWMB8E0 not charging

Not true since ACOK can be pulled up to an external supply derived from the main power rail. So it may not be high before the DC-in MOSFETs are turned on, but it's not necessarily pulled low by the...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-13-2022, 04:34 AM
Replies: 7
Views: 240
Posted By piernov
Re: Macbook Air 820-00165 A 14 V on PP3V42_G3H

The original inductor uses this kind of package. It is not the same thing as a ferrite bead used to filter high frequency noise though.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-12-2022, 07:40 AM
Replies: 7
Views: 240
Posted By piernov
Re: Macbook Air 820-00165 A 14 V on PP3V42_G3H

The inductor is a critical part of the buck converter, it cannot be replaced by a ferrite bead.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-11-2022, 08:30 AM
Replies: 7
Views: 240
Posted By piernov
Re: Macbook Air 820-00165 A 14 V on PP3V42_G3H

Measure on the output of the inductor not the input.
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 06-11-2022, 05:23 AM
Replies: 79
Views: 19,610
Posted By piernov
Re: Software to analyze Video RAM faults on graphics cards?

I used it on 8800 GTS G80.

GTX 260 won't be supported as it is a GT200 core, however there is some support for G9x.
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 06-10-2022, 05:23 PM
Replies: 79
Views: 19,610
Posted By piernov
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-06-2022, 04:39 AM
Replies: 17
Views: 641
Posted By piernov
Re: KB and Trackpad only work in safe mode - 820-4924-A Macbook Pro Late 2015 A1502

Again it sounds like an image problem and not a touchpad/keyboard problem. If image is frozen you won't see the result of using mouse/keyboard, however caps lock and audio were still reacting. Can...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 06-05-2022, 03:23 PM
Replies: 17
Views: 641
Posted By piernov
Re: KB and Trackpad only work in safe mode - 820-4924-A Macbook Pro Late 2015 A1502

If the image is frozen, it's not a touchpad/keyboard problem but an image problem.
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