some liquid doped near DDR3L socket caused a short in memory the whole PCB
no response
after removing memory,, PCB power up with 2 beeps code " memory not detected"
putting another working DDR3L memory PCB respond with 4 beeps code
" memory read/write failure "
any chance fixing this board where should i begin
motherboard Cedar Intel MB 13269-1 FX3MC A00
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troubleshooting memory read/write failure dell 3542
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help -Toshiba C855D- monitor power circuts
hello everybody
this laptop with DK10AC motherboard problem
what cause this to be difficult no schematics
DK10AC-6050A2......
motherboard power on normally without Monitor "cable unplugged"
tried removing Camera USB - another monitor same problem so it's a matter of LCD power circuit problem
any hints guys i know allot having experience with similar failures
what do i need to check
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Re: Old Dell inspiron 700m dump or bios file
thanks for replay
you are right about security chip
i've seen years ago a way to dump data of Nvm chip and use hex editer to find password data right in the dump
i'm gonna walk through this way
can't believe this PC is impossible to unblock even through dell
[url]http://en.community.dell.com/support-forums/laptop/f/3518/t/19504393[/url]
i had this Laptop from used market in japan i can't prove my ownership to this laptop plus technicians told another customer...
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Old Dell inspiron 700m dump or bios file
i have this laptop with password locked,,, many ways to unlock it without removing bios chip
i removed the chip get EEPROM programmer now want to have bios file
i though it would be easy to extract bios file from bios update application
I've tired many ways but it's impossible to extract bios from update file
i mean this damn model
just need the bios file or a complete bios chip dump able to be re flashedLast edited by The ENIGMA; 06-09-2016, 10:16 AM.
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Re: pavilion g6-2163se Motherboard problem
thanks for replay
i wish i could have tools to measure Crystal
i only have multimeter simple one
if i can do any tric to measure it's functionality with simple multimeter
i would be very happy and pleased to let me know ...
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Re: pavilion g6-2163se Motherboard problem
thanks for helping me tibd
you were right PCH was fried
LCD/Camera Cable was damaged and shorted and i didn't notice it till it was too late
wish i could replace PGA chips here in egypt
i wish i could have access to buy PCH ICs and solider it
...
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Re: replacing transistor AO4409 with AO4407
thanks for reply
and excuse my ignorance
i follow board schematics i found transistor should be si4459ad like it was repaired before
i search for availabe components in my office
only i did find TPC8111
from comparing
current plused -45 A ___ other -70 A
what the chances of replacing si4459ad with TPC8111...
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replacing transistor AO4409 with AO4407
laptop motherboard near battery charge socket
tested components
i found a shorted Ao4409
i tried 2 times replace it with AO4407 they get shorted also
so could it be possible to replace or there's somthing els that short this trasnistor like PWM ic
i know this thread looks silly but i'm new in electronic stuff
LA-675AP...
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Re: pavilion g6-2163se Motherboard problem
DEAD Southbridge !!??
don't say it please ;'(
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Re: pavilion g6-2163se Motherboard problem
yes it was working he even said wifi not working also I check out
no drivers were installed I install all it's drivers
wifi worked 2 vga cards worked but no usb or sound card Plus 1 unknown device in usb device controllers
:'( I really didn't do something extra just remove those resistors and I was very careful not to do something wrong ;'(
what I did was mentioned for realLast edited by The ENIGMA; 04-17-2016, 04:26 AM.
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pavilion g6-2163se Motherboard problem
hello everyone I need your help guys
this laptop came up with not working usb port 2xusb3 1xusb2
no sound card or camera in devices,1 unkown device on usb hub probably camera also Sound IC is burnt customer mentioned that smoke cam out from laptop once but laptop was working with it's touchpad and keyboard boot to windows
so I tried to check out what's wrong I've tried to disconnect camera from mainboard
R14 3v camera removed also r8,r9 they are usb data + data - to camera
plug adapter try to power on computer it didn't work at all
...Last edited by The ENIGMA; 04-17-2016, 04:02 AM.
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Re: dell latitude e5400 power problem
yes pin no 5 3.3v and pin 7 5.0v
what next,,
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Re: dell latitude e5400 power problem
there was some changes in numbers
my board is a business class
i have found the PWM chip pu79 SN0608098
all check points were good
1.3, 2.0, 3.3, 5.0, volts
there was broken resistant PR650 connected to pin 19 "PR659 on the schematics"
with value 10.3 K and it has something to do 5.0v VCC or 5V_ALW_2
schematics did not mention exactly PR650 but it is in the same position of PR659
also the track is lost hopefuly i was able to discover the lost track wider than the resistant...
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Re: dell latitude e5400 power problem
teslam
I was looking for this schematic all day
something suspicious ,, adapter it reads
18.7 ~ 19.41 not stable read gonna chek my multimeter and try another adapter before it gets deep
thanks I will do some check and replay
thanks and peace for all Tunisians
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dell latitude e5400 power problem
hello everyone
I have a power problem with dell latitude e5400
leds flash less than a second
when I press power button nothing happened when I disassemble it
one of ram sticks was not properly set
I measured some diods,, fuse,,, big resistant parts,, some mosfets
19.25 volt was measured on the input jack no PWM ices getting heat up
north and south bridges seem fine
I tested board with/without ram and cpu no power
where do I began test
please guys help still newby in this job
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Re: Hp elitebook 2540p Locked
thank you so much
this rom was perfect
i think this post gonna help allot of poeple in many ways...
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