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Search: Posts Made By: mon2
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Today, 08:41 AM
Replies: 1
Views: 38
Posted By mon2
Re: Yoga3 Pro-1370 NM-A321 - no power at all

Hi. Perhaps not strong enough tea for me but having some difficulty in following this schematic.

1) Where are you measuring the DCin power rail ? Is it @ JP23, pin # 5 ?

What is JP23 on your...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Today, 07:40 AM
Replies: 3
Views: 65
Posted By mon2
Re: ThinkPad T460s processor frequency i5-6300U

What is the resistance value you measured of this ID pin on the adapter being tested?

Take the measurement without any power to the adapter.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Today, 07:02 AM
Replies: 1
Views: 26
Posted By mon2
Re: Lenovo LA-H105P element identification

https://www.aliexpress.com/item/1005002712638544.html
...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Today, 04:56 AM
Replies: 1
Views: 36
Posted By mon2
Re: hp 450 g5

Post more details of the wifi card and model you are testing.

The issue maybe the pin #1 = WAKE# line of the adapter.

To test, apply a thin piece of tape onto pin #1 of the gold contact of the...
Forum: Schematic Requests ONLY! Yesterday, 07:55 PM
Replies: 4
Views: 1,558
Posted By mon2
Re: Looking for ux430un schematic or boardview

Found only a BV file for R2.2.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 07:52 PM
Replies: 6
Views: 149
Posted By mon2
Re: A1286 820 2850 no hdd detected

Is U4510 present on your logic board ? If yes, confirm the power rails (VDD) and connections for this component.

It is a SATA signal redriver IC that basically cleans up and amplifies the high...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 02:28 PM
Replies: 6
Views: 149
Posted By mon2
Re: A1286 820 2850 no hdd detected

Further to the comments raised by @mcplslg123, do confirm that the cable is working in another box. The reason being that we ordered a batch of these cables from a reliable supplier on Aliexpress....
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 02:02 PM
Replies: 10
Views: 116
Posted By mon2
Re: iPhone 5 tristar advice

Which tristar tester did you use ? Is it a breakout board and used the diode mode on the meter for testing ?

Or a stand alone tool for testing of the tristar ?

The tool is reporting a tristar...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 09:22 AM
Replies: 18
Views: 662
Posted By mon2
Re: Macbook Pro 2020 Touch Bar A2289 Ambient sensor and camera not working

https://www.aliexpress.com/wholesale?trafficChannel=main&d=y&CatId=0&SearchText=mini+ironing+table+solder&ltype=wholesale&SortType=total_tranpro_desc&groupsort=1&page=1
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 08:28 AM
Replies: 5
Views: 81
Posted By mon2
Re: Dell Inspiron 3593 (Not Charging The Battery)

https://www.badcaps.net/forum/showthread.php?t=100088&highlight=LA-J081P
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 07:43 AM
Replies: 18
Views: 662
Posted By mon2
Re: Macbook Pro 2020 Touch Bar A2289 Ambient sensor and camera not working

That really sucks...Dyson style.

Go with your original plan to buy the extension cable that may be a good fit and use the following tool to safely remove the connectors. Do not use hot air. Lots...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 07:03 AM
Replies: 5
Views: 81
Posted By mon2
Re: Dell Inspiron 3593 (Not Charging The Battery)

Remove all power -> meter in resistance mode -> check the usual 2 x DCin mosfets to see if they are defective or not.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 05:06 AM
Replies: 7
Views: 175
Posted By mon2
Re: dell 5110

https://www.dell.com/community/Laptops-General-Read-Only/Screen-flickering-Dell-Inspiron-n5110/td-p/3898401
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 04:37 AM
Replies: 3
Views: 65
Posted By mon2
Re: ThinkPad T460s processor frequency i5-6300U

Yes, can be impacted in the same way..

From the linked wikipedia:

Signal Pin
Power controller subsystem senses when power is connected, and measures resistance between central signal pin and...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices Yesterday, 03:31 AM
Replies: 9
Views: 281
Posted By mon2
Re: A1706 MacBook Pro mid 2017 no internal SSD 820-00923

From your post #6 and following the same thread on the Rossmann forum, the voltage readings look a bit low.

at R9420 P2V7NAND_EN and PICCOLO_VEN1 are 0V

This is a show stopper.
...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 09-28-2022, 02:32 PM
Replies: 9
Views: 141
Posted By mon2
Re: 71R-H14BW6-T830, clock stops when shutdown

Reflash the BIOS to the latest if you have not done so already. Just in case there is some s/w fault linked to the RTC. Otherwise, the checks you have performed look good to me.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 09-28-2022, 01:40 PM
Replies: 9
Views: 141
Posted By mon2
Re: 71R-H14BW6-T830, clock stops when shutdown

What is the voltage @ RTC_TEST# ? (C463 & R406)

Remove all power -> meter in resistance mode. Check the resistance to ground on each side of the same crystal (Y6).

This clock crystal is not...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 09-28-2022, 11:06 AM
Replies: 9
Views: 141
Posted By mon2
Re: 71R-H14BW6-T830, clock stops when shutdown

Is the crystal @ Y6 a known good crystal ? Should be 32.768khz which are very common for RTC circuits.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 09-28-2022, 10:16 AM
Replies: 9
Views: 141
Posted By mon2
Re: 71R-H14BW6-T830, clock stops when shutdown

Check the voltage at D11, pin #3 (+3.3VA_RTC).

What is the voltage when powered ON?

What is the voltage when powered OFF?

This is a dual common cathode diode that will select the higher of...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 09-28-2022, 08:44 AM
Replies: 2
Views: 75
Posted By mon2
Re: Power on and off problems in a laptop ASUS UX330UA

Hi. What is the version of the logic board that is inside this box ?

Is it version 2.0 or 2.1 ? Have access to the boardview files only for this model.

If you run from the battery only, is the...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 09-28-2022, 05:49 AM
Replies: 5
Views: 140
Posted By mon2
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 09-28-2022, 02:53 AM
Replies: 4
Views: 118
Posted By mon2
Re: thinkpad yoga 460 - no usb in OS. in boot/install all ok

What is the error code showing in the Windows device manager for the xHCI controller?

Which windows version are you running?

Any bios enabled security features?
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 09-27-2022, 01:46 PM
Replies: 5
Views: 170
Posted By mon2
Re: HP 15-AX205NS, does not turn on with original charger

The voltage of AD_ID will vary based on the power (current) that can be supported by the external power adapter.

Your external lab power supply works but is based on a different AD_ID value. This...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 09-27-2022, 11:52 AM
Replies: 5
Views: 170
Posted By mon2
Re: HP 15-AX205NS, does not turn on with original charger

What is the actual voltage from the original charger ?

What is the voltage used from your power supply that is working for your logic board ?
Forum: Schematic Requests ONLY! 09-27-2022, 07:01 AM
Replies: 2
Views: 100
Posted By mon2
Re: Asus X405UQ boardview need

See attached for 2 BV files for this board.
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