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Search: Posts Made By: dellxps15
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 11-17-2020, 08:06 AM
Replies: 11
Views: 392
Posted By dellxps15
Re: macbook A1398 EMC 2674 no chime and black screen

looks like u used a iron to desolder the bios chip. always use hot air for more then 2 pin component solder and use flux when desoldering and soldering it back.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 11-12-2020, 08:18 AM
Replies: 4
Views: 163
Posted By dellxps15
Re: Clevo P751ZM

go in bios setting, it see m2 hdd ? is it set to ahci ? is it set to uefi boot ? under boot u have windows boot manager as first ?
Forum: Troubleshooting TVs and Video Sources 11-12-2020, 07:06 AM
Replies: 19
Views: 451
Posted By dellxps15
Re: dikom 22 lcd blown mosfet replacement

update of today: i replaced the caps on psu and now tv is working fine and in all function :)

tnx for the help
Forum: Troubleshooting TVs and Video Sources 11-11-2020, 09:22 AM
Replies: 19
Views: 451
Posted By dellxps15
Re: dikom 22 lcd blown mosfet replacement

update: after some time tring to figure out wat was wrong, i ear a noise from psu when backlight and audio were both working. i measured psu volts (its external 12v 5A) and measured 12volt when tv is...
Forum: Troubleshooting TVs and Video Sources 11-10-2020, 11:31 AM
Replies: 19
Views: 451
Posted By dellxps15
Re: dikom 22 lcd blown mosfet replacement

i dont have that j9. it must be a separate j pinout as i have 3 pin for ch+ ch- source menu vol+ vol- and power on/off.

also audio without touching anything sometimes work after a while sometimes...
Forum: Troubleshooting TVs and Video Sources 11-10-2020, 10:49 AM
Replies: 19
Views: 451
Posted By dellxps15
Re: dikom 22 lcd blown mosfet replacement

ok i see that m/ss on similar schematic posted on N#4 . i tryied plug in headphone and as i plug them i ear sound on headphone, but inssert and remove headphone didnt give back sound to speakers.
...
Forum: Troubleshooting TVs and Video Sources 11-10-2020, 10:05 AM
Replies: 19
Views: 451
Posted By dellxps15
Re: dikom 22 lcd blown mosfet replacement

i made some measurement and when i have audio, on red dot i have 11.5 volt, while when there is no audio, i have 5.12 volt.

sometimes i have 11.5-11.8 volt on that red dot with working backlight...
Forum: Troubleshooting TVs and Video Sources 11-09-2020, 01:52 PM
Replies: 19
Views: 451
Posted By dellxps15
Re: dikom 22 lcd blown mosfet replacement

hi all, today after first ship didnt arrived, i ordered a second time that mosfet and tv was giving image back, but i noticed some weird issue :

if tv start with backlight, i have no sound, and if...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 11-04-2020, 08:09 AM
Replies: 17
Views: 5,360
Posted By dellxps15
Re: Sony MBX 224 conversion needed

if i remember well, i replaced the vga bga and one vga shorted mosfet on this mainboard and all was just fine with some 30€ spent on bga and staff to fully fix it. i would not go uma on this one...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 11-02-2020, 05:39 AM
Replies: 8
Views: 321
Posted By dellxps15
Re: 820-2915-B Chime, Boot to OS, Hear sounds, but No Video

yes i have measured that on a booting board. now i have another bga, same model same datacode as i ordered 2 from goldenchipset. the first one got reballed with leaded balls ands soldered on it...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-29-2020, 06:23 AM
Replies: 8
Views: 1,712
Posted By dellxps15
Re: macbook air no backlight 820-00165, help please, bad gpu or fixable?

if u put a light onscreen can u see the image ?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-28-2020, 08:18 AM
Replies: 8
Views: 321
Posted By dellxps15
Re: 820-2915-B Chime, Boot to OS, Hear sounds, but No Video

today i replaced the gpu bga with a new one from goldenchipset. whole process was fine. gpu soldered ok after 20 min to allign it without markers onboard, but now i have black screen when powering on...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-27-2020, 04:32 AM
Replies: 9
Views: 364
Posted By dellxps15
Re: Acer Nitro V motherboard caps and fuse required

c5503 is 0402 package
c5504 is 0603
c5502 is 0805

for my opinion
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-23-2020, 10:14 AM
Replies: 22
Views: 721
Posted By dellxps15
Re: Troubleshooting a Asus X541UVK

remove the red marked jumper (clean with solder wick) and see if ic still get hot, if 3.3 and 5 volts comes on, see if resistance on coils has changed.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-22-2020, 04:25 PM
Replies: 22
Views: 721
Posted By dellxps15
Re: Troubleshooting a Asus X541UVK

resistance on pin 8 of bios ?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-22-2020, 02:19 PM
Replies: 22
Views: 721
Posted By dellxps15
Re: Troubleshooting a Asus X541UVK

on the attached guide pm_pwrbtn pin for volts here. measure and report back

+5vao +3vad +3vaddsw_on check both voltage and resistante to gnd (resistance without power )
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-21-2020, 07:45 AM
Replies: 22
Views: 721
Posted By dellxps15
Re: Troubleshooting a Asus X541UVK

check voltage for 3.3 , 5 volt, powerbutton and so on.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-16-2020, 03:56 AM
Replies: 43
Views: 808
Posted By dellxps15
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

7 or 8 bit no cpu error, but why with a13 bios it is dead ? im suspecting of a bad pch chip.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-15-2020, 06:40 AM
Replies: 22
Views: 538
Posted By dellxps15
Re: 820-2915 no video

external monitor works only when os is almost loaded.
did u reset pram ?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-14-2020, 03:42 PM
Replies: 43
Views: 808
Posted By dellxps15
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

strange i tryed a11 a12 a13 and none worked. only one bios i have and dunno wich one is made it boot, but no post.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-14-2020, 11:47 AM
Replies: 43
Views: 808
Posted By dellxps15
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

sorry for late. today i wanted to look at my board and after flashing a13 bios and ec pc didnt power on annymore. wich version of ec and bios did u used ?

same a13 from rar for both bios and ec,...
Forum: Troubleshooting TVs and Video Sources 10-14-2020, 04:00 AM
Replies: 19
Views: 451
Posted By dellxps15
Re: dikom 22 lcd blown mosfet replacement

when board is off i have 5 volt on gate and source. when power on the board i have 5 volt source and 0 volt gate.
Forum: Troubleshooting TVs and Video Sources 10-13-2020, 03:09 PM
Replies: 19
Views: 451
Posted By dellxps15
Re: dikom 22 lcd blown mosfet replacement

wow tnx very much for the reply. so if i get a FAIRCHILD 9435 would also be ok right ?

and if i use a normal p-channel that i have for notebook ?

like this one...
Forum: Troubleshooting TVs and Video Sources 10-13-2020, 01:57 PM
Replies: 19
Views: 451
Posted By dellxps15
Re: dikom 22 lcd blown mosfet replacement

tnx for reply. u19 is ok. was just some thin dust or similar :)
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-13-2020, 01:13 PM
Replies: 4
Views: 210
Posted By dellxps15
Re: Macbook pro problem with heating some parts

they are both related to displayport. check if its all clear in that connector -zone
Showing results 1 to 25 of 500

 
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