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Search: Posts Made By: ktmmotocross
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-13-2020, 04:59 AM
Replies: 8
Views: 132
Posted By ktmmotocross
Re: Confused about RT8231BGQW pinout

if that short is gome withremoving that chip, than it must be fault in it
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-13-2020, 01:04 AM
Replies: 8
Views: 132
Posted By ktmmotocross
Re: Confused about RT8231BGQW pinout

check highside mosfet for short. remove it and check
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-13-2020, 12:03 AM
Replies: 8
Views: 132
Posted By ktmmotocross
Re: Confused about RT8231BGQW pinout

everything is wrote ok. left pictures is aligned by marking
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-12-2020, 09:09 AM
Replies: 3
Views: 56
Posted By ktmmotocross
Re: Apple A1369 820-2838-A no backlight

BV and SCHEM. Connector looks ok
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-12-2020, 08:00 AM
Replies: 3
Views: 56
Posted By ktmmotocross
Apple A1369 820-2838-A no backlight

Hello.
Have this Apple A1369 820-2838-A with no backlight after LCD change./not by me/

I measured 19V on backlight pins of LVDS connector. but dont find PP3V3_SW_LCD

Can be this voltage...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-08-2020, 12:13 AM
Replies: 5
Views: 169
Posted By ktmmotocross
Re: HP Probook 450 G6

by changing ic ?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-07-2020, 01:07 PM
Replies: 7
Views: 128
Posted By ktmmotocross
Re: Asus k54 wont charge when system is running

i have DPS3005 on 24V 90W laptop charger

never have better budget PSU and never have problem with it. i used 20V and 19V 5A on that laptop and not worked as this original. there must be something...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-07-2020, 03:23 AM
Replies: 7
Views: 128
Posted By ktmmotocross
Re: Asus k54 wont charge when system is running

WTF? :wtf:

u have right. i attached 65W charger and it charging

but how can it be? charger have just two wires?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-05-2020, 11:17 AM
Replies: 7
Views: 128
Posted By ktmmotocross
Re: Asus k54 wont charge when system is running

as i know asus dont have any sort of wattage check like hp or lenovo
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-05-2020, 05:38 AM
Replies: 7
Views: 128
Posted By ktmmotocross
Re: Asus k54 wont charge when system is running

Im using PSU as charger. dont change battery, but battery hold about 2hours without charger. battery is charging normally by 25W and goes down as charged
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-05-2020, 03:01 AM
Replies: 7
Views: 128
Posted By ktmmotocross
Asus k54 wont charge when system is running

Hello .
Have weird problem with Asus K54 that charge only when system is not runing. when charging and start system, it charge . when i remove charger and reatach it with system runing. no power is...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-02-2020, 11:14 AM
Replies: 6
Views: 94
Posted By ktmmotocross
Re: Lenovo V110-15ISK burned ic

what is this cards testing? paths from memory to cpu?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-02-2020, 11:09 AM
Replies: 6
Views: 94
Posted By ktmmotocross
Re: Lenovo V110-15ISK burned ic

burned ic passing 10W to ram chips so it get about 6V. i dont think that ram chips could stand that
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-02-2020, 10:13 AM
Replies: 6
Views: 94
Posted By ktmmotocross
Re: Lenovo V110-15ISK burned ic

looks like memory chips are toasted. do u thing that i can just remove onboard memory?

i allready lost two welded pads on ic but maybe i can repair it


board is LV115SK 15277-1N
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-02-2020, 09:50 AM
Replies: 6
Views: 94
Posted By ktmmotocross
Lenovo V110-15ISK burned ic

Hello. Have this Lenovo V110-15ISK with burned ic which looks like power ic for memory. Can somebody identify this ic?

IC is PU5101
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-01-2020, 06:45 AM
Replies: 2
Views: 87
Posted By ktmmotocross
Re: HP Ideapad 14, help finding dc-dc converter ic.

amazon, ebay. lot of em but best price is china
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-30-2020, 04:09 AM
Replies: 4
Views: 113
Posted By ktmmotocross
Forum: Schematic Requests ONLY! 09-30-2020, 03:03 AM
Replies: 3
Views: 198
Posted By ktmmotocross
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-26-2020, 12:27 PM
Replies: 0
Views: 63
Posted By ktmmotocross
lenovo Ideapad Z500 - freeze while copying files in win10 installation

Hello.
Have this lenovo Ideapad Z500 that freeze while copying files in win10 installation

It was water spilled and have burned highside mosfet on GPU and shorted 330d capacitor in CPU circuit.
...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-23-2020, 11:51 PM
Replies: 43
Views: 542
Posted By ktmmotocross
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

that 19V on power butoon is really weird. find source of it.
measure D26
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-23-2020, 03:12 AM
Replies: 21
Views: 421
Posted By ktmmotocross
Re: Acer E1-532 LA-9532P wont work without charged battery

now for me it is looks like battery must be attached, but not flat dischaged. i discharged battery, leave it out for a day and when i attach charger it work normally
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-22-2020, 03:23 PM
Replies: 21
Views: 421
Posted By ktmmotocross
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-22-2020, 01:40 PM
Replies: 21
Views: 421
Posted By ktmmotocross
Re: Acer E1-532 LA-9532P wont work without charged battery

pq305 cannot be bad when normally charging
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-22-2020, 11:08 AM
Replies: 21
Views: 421
Posted By ktmmotocross
Re: Acer E1-532 LA-9532P wont work without charged battery

without charged battery i have 2.5V on pr303

without battery and pr303 i have 20V on its pad
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-22-2020, 09:23 AM
Replies: 21
Views: 421
Posted By ktmmotocross
Re: Acer E1-532 LA-9532P wont work without charged battery

"without pr303 and without battery u have 20volt on pr303 first pad?" - YES

if so put back pr303 and remove pq304. stil l20 volt on pr303 charger only ? - NO
Showing results 1 to 25 of 500

 
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