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Search: Posts Made By: ktmmotocross
Forum: Troubleshooting Laptops, Portable, and Mobile Devices Yesterday, 03:31 AM
Replies: 0
Views: 33
Posted By ktmmotocross
Nvidia gtx970 not work

hello.
have this nvidia gtx970 that not work. fans work, all voltages are ok, but after 3-4 seconds after start, GCORE and GRAM voltages goes to zero.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-17-2019, 11:34 AM
Replies: 2
Views: 106
Posted By ktmmotocross
acer nitro 17- 3,3 and 5v pulsing

Hello.
Have this AcerNitro 17 with board Neptune_KLS 16834-1M 448.0B105.001M

that have flickering 3,3 , 5V and little flicker on 19V

also measure 0.4ohm on GPU without coils

do u think...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 11-30-2019, 03:06 AM
Replies: 1
Views: 80
Posted By ktmmotocross
Apple 820-00244not start

Hello.Have this Apple 820-00244 board that wont start. i dont have QC charger, just usual 5V 1.5A usb charger.

When i connect it to usb-c port the voltage on fuse is 5V, but after first doubled...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-10-2019, 06:19 AM
Replies: 7
Views: 187
Posted By ktmmotocross
Re: MSI GP60 2QF Leopard Pro distorted sound

from datasheet i see that bypass is just connected to capacitor, so i will order amplifier ic and replace it
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-09-2019, 01:29 PM
Replies: 7
Views: 187
Posted By ktmmotocross
Re: MSI GP60 2QF Leopard Pro distorted sound

i check input sound to amplifier with headphones and it is ok.
Amplifier is APA2031 ...
Forum: Schematic Requests ONLY! 10-09-2019, 01:27 PM
Replies: 2
Views: 168
Posted By ktmmotocross
Re: MSI MS-16gh1 need schematic - distorted sound

come on guys. no scheamtic or boardview?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-06-2019, 03:45 AM
Replies: 7
Views: 187
Posted By ktmmotocross
Re: MSI GP60 2QF Leopard Pro distorted sound

i check amplifier. i have flicker voltage on input and output, but on ALC892 sound chip output lines is stable
VDD voltages on both chip is solid and ok

have u some hint how to check sound before...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-06-2019, 02:33 AM
Replies: 7
Views: 187
Posted By ktmmotocross
Re: MSI GP60 2QF Leopard Pro distorted sound

i try it with ububntu and works the same. i think it is in amplifier but need schematic to check that
Forum: Schematic Requests ONLY! 10-06-2019, 02:32 AM
Replies: 2
Views: 168
Posted By ktmmotocross
MSI MS-16gh1 need schematic - distorted sound

MSI Gaming laptop MS-16gh1 need schematic - distorted sound
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-05-2019, 01:21 AM
Replies: 7
Views: 187
Posted By ktmmotocross
Re: MSI GP60 2QF Leopard Pro distorted sound

on headphones sound is good, only on reproductors is bad
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-04-2019, 12:11 PM
Replies: 7
Views: 187
Posted By ktmmotocross
MSI GP60 2QF Leopard Pro distorted sound

Hello.
Have this msi MS-16GH MSI GP60 2QF Leopard Pro gaming laptop that have weird sound. owner say he using much headphones jack

check audio attached

where to start finding fault?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-15-2019, 03:12 AM
Replies: 11
Views: 348
Posted By ktmmotocross
Re: Lenovo g70-70 AILG1 NM-A331 no power

guys anyone can help with this?

after mosfet change, it self start. all voltages are good. cpu and gpu is heat, but no post. try to flash bios but no luck
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-08-2019, 12:04 AM
Replies: 11
Views: 348
Posted By ktmmotocross
Re: Lenovo g70-70 AILG1 NM-A331 no power

looks like u have right. first mosfet shorted between base and source. after replace power is good, but still no post
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-07-2019, 04:22 AM
Replies: 11
Views: 348
Posted By ktmmotocross
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-07-2019, 03:30 AM
Replies: 11
Views: 348
Posted By ktmmotocross
Re: Lenovo g70-70 AILG1 NM-A331 no power

i jumped second mosfet and voltages looks ok even after press power button. but no post and power just jump to 8W
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-07-2019, 01:44 AM
Replies: 11
Views: 348
Posted By ktmmotocross
Re: Lenovo g70-70 AILG1 NM-A331 no power

i have ACDET, VCC, but no ACOK on BQ737

replaced but still the same
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-07-2019, 01:09 AM
Replies: 11
Views: 348
Posted By ktmmotocross
Re: Lenovo g70-70 AILG1 NM-A331 no power

if thez was shorted, i will get 19V after them :)

second is P channel so some charging logic is bad
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-06-2019, 12:17 PM
Replies: 11
Views: 348
Posted By ktmmotocross
Lenovo g70-70 AILG1 NM-A331 no power

Hello have this Lenovo g70-70 AILG1 NM-A331 with no power. second p-mosfet have 20v on gate. i cannot find shematic. what to do?
Forum: Schematic Requests ONLY! 09-06-2019, 10:54 AM
Replies: 2
Views: 230
Posted By ktmmotocross
Forum: Schematic Requests ONLY! 09-04-2019, 02:33 PM
Replies: 2
Views: 230
Posted By ktmmotocross
need schematic for Lenovo g70-70 AILG1 NM-A331

hi guys.
Im in need for schematic of Lenovo g70-70 AILG1 NM-A331
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 08-17-2019, 03:30 AM
Replies: 8
Views: 167
Posted By ktmmotocross
Re: Lenovo T430u - which chip to flash?

ME region is bigger than main bios? :eek:

flashed U20 and got picture
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 08-17-2019, 02:54 AM
Replies: 8
Views: 167
Posted By ktmmotocross
Re: Lenovo T430u - which chip to flash?

i read that but still dont know what do other two 4BM ic. EC bios and what is second one for?

and on my board u19 and u23 is 4MB and u20 is 8MB

MB is rev.F
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 08-17-2019, 02:06 AM
Replies: 8
Views: 167
Posted By ktmmotocross
Lenovo T430u - which chip to flash?

Hello
Have this Lenovo t430u with no post.
Found three bios chips, so im confused which one to flash.
Also if somebody have good dumps it will be great to post it

there are two 4MB ic and one...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-31-2019, 04:16 PM
Replies: 8
Views: 253
Posted By ktmmotocross
Re: mosfet value for inspiron, vegas/turis 15341-1

as fuse says 1.1A u can use literraly any p-channel mosfet because 2A take anything
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-13-2019, 03:27 AM
Replies: 1
Views: 172
Posted By ktmmotocross
Lenovo Yoga 2 Pro NM-A074 not start

Hello.
Have this Lenovo Yoga 2 Pro that have all required voltages, it charges, all looks ok, but it absoluttely not react to power button. powerbutton have 3.3V and is regulary shorted to ground. i...
Showing results 1 to 25 of 500

 
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