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Search: Posts Made By: piernov
Forum: Troubleshooting Laptops, Portable, and Mobile Devices Yesterday, 07:21 AM
Replies: 13
Views: 152
Posted By piernov
Re: iMac A1312 820-2828-A dead

Press space to show the other side of the board and press M to mirror it.

You didn't follow my suggestion of injecting 3V since you injected 4.5V. Injecting 4.5V into a 3.42V rail will kill...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices Yesterday, 05:47 AM
Replies: 13
Views: 152
Posted By piernov
Re: iMac A1312 820-2828-A dead

Please point out which component placement is different between boardview and the actual logic board, I still don't understand.
If there is a short to ground on PP3V42_G3H, you can inject 3V with a...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices Yesterday, 05:38 AM
Replies: 3
Views: 54
Posted By piernov
Re: Strange VCCSA - Lenovo G470 - LA-6751P

CPU is not soldered so most reasonable would be to try another CPU first.
Then try to reflow PU601 solder joints.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices Yesterday, 05:09 AM
Replies: 13
Views: 152
Posted By piernov
Re: iMac A1312 820-2828-A dead

I haven't looked in great details but the board pictures still seem to match the boardview…
Not sure what you mean by "ISL chip". You have to take measurements of all G3H rails so that includes...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices Yesterday, 04:58 AM
Replies: 10
Views: 150
Posted By piernov
Re: Missing 3.3v/5v always on hp laptop

3 blinks means battery is discharged.
Forum: Major Manufacturers Boards 06-04-2020, 05:27 PM
Replies: 4
Views: 658
Posted By piernov
Re: ASRock H61M-DGS dump required.

Download from official Asrock website.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 06-04-2020, 05:24 PM
Replies: 3
Views: 58
Posted By piernov
Re: macbook pro a1502 2015

What's the resistance to ground? Did you try injecting 1V to see if a component heats up (like PCH)?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 06-04-2020, 10:52 AM
Replies: 13
Views: 152
Posted By piernov
Re: iMac A1312 820-2828-A dead

Looks like it is the correct schematic and boardview for the 820-2828 board.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 06-04-2020, 05:26 AM
Replies: 13
Views: 152
Posted By piernov
Re: iMac A1312 820-2828-A dead

Check voltage on the G3H and S5 rails.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 06-03-2020, 09:19 AM
Replies: 8
Views: 172
Posted By piernov
Re: elitebook 8760W laptop which has a problem with charging

Did the laptop run properly from the "new" battery (AC adapter disconnected, when the battery was still charged) and did it report percentage properly?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 06-03-2020, 07:57 AM
Replies: 5
Views: 75
Posted By piernov
Re: Lenovo ThinkPad T440p running slow

If ME is not cleaned after dumping from another machine it won't work properly.
Forum: BIOS Requests ONLY! 06-03-2020, 04:58 AM
Replies: 5
Views: 133
Posted By piernov
Re: 820-3476-a 2014 A1502

Clean ME region
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 06-03-2020, 04:55 AM
Replies: 5
Views: 75
Posted By piernov
Re: Lenovo ThinkPad T440p running slow

Cleaned ME region properly when flashing the BIOS?
Tried with a good battery?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 06-02-2020, 08:56 PM
Replies: 9
Views: 151
Posted By piernov
Re: MacBook Pro 15" Mid 2012 Unibody NO AUDIO

No audio on speakers or headphones? No chime even after PRAM reset? Does audio device show up in System Preferences? Does it say Digital Out only?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 06-02-2020, 04:36 AM
Replies: 14
Views: 312
Posted By piernov
Re: Laptop Sony Vaio shutdown every 30 minutes

I don't know if it can cause this kind of problem but maybe it's the ME disable strap.
Forum: BIOS Requests ONLY! 06-01-2020, 04:08 PM
Replies: 2
Views: 57
Posted By piernov
Re: Acer 5236/5536 BIOS issue?

Make sure you are using a compatible CPU (different generation of S1 socket are not compatible), could also be a dead northbridge or GPU.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-31-2020, 05:25 AM
Replies: 14
Views: 312
Posted By piernov
Re: Laptop Sony Vaio shutdown every 30 minutes

How did you clean ME region? post your dump in BIOS request section and ask for a properly cleaned ME region.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-30-2020, 07:08 AM
Replies: 2
Views: 75
Posted By piernov
Re: Mac Mini Late 2018 |A1993| Fan Connector Damage & Lots of Weird Issues

No schematics available for any Mac Mini.

The fan is probably PWM controlled, and it has a tachometer to report the speed. Meaning that it should have at least 4 separate connections like PC fans...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-30-2020, 04:06 AM
Replies: 4
Views: 103
Posted By piernov
Re: MacBook Pro 17" Mid 2010 Kernal Panic Issue

They're not the same cap. On 15" 2010, C9560 is a 330F 2V tantalum, the exact same one found as C7771 on some earlier 2008/2009 models (and yes on those it applied to 17" as well). On 17" 2010,...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-30-2020, 12:15 AM
Replies: 4
Views: 103
Posted By piernov
Re: MacBook Pro 17" Mid 2010 Kernal Panic Issue

The 17" 2010 doesn't have the failing C9560 capacitor, it only applies to the 15" 2010.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-29-2020, 06:11 AM
Replies: 9
Views: 150
Posted By piernov
Re: Asus N56JN Boot issue

It's better to use another SPI ROM of the same model if you have one lying around. Otherwise you can reuse the same chip after making sure you got a correct dump from it.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-29-2020, 04:17 AM
Replies: 9
Views: 150
Posted By piernov
Re: Asus N56JN Boot issue

Well, dump & flash the BIOS and see if the behavior changes.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-28-2020, 04:11 PM
Replies: 5
Views: 135
Posted By piernov
Re: 820-4924-A Logic board Dead

PPBUS_G3H should be 12.6V
Confirm you are using a known good genuine Apple Magsafe2 60W/85W.
Go down the list of power rails and report voltages… G3H, S5, SUS, S4… (can ignore S3 and S0 for now as...
Forum: Schematic Requests ONLY! 05-28-2020, 04:51 AM
Replies: 5
Views: 107
Posted By piernov
Re: Service manual for Fujitsu Lifebook S7211

That's how the battery market is.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-28-2020, 04:49 AM
Replies: 5
Views: 135
Posted By piernov
Re: 820-4924-A Logic board Dead

Voltage on gate/drain/source of Q7010?
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