Hello there, so today I think I broke a laptop, I have DELL L502X with I7 and it had faulty HDD and USB 3.0 connections, so I replaced connection, insert new HDD and now whenever it gets power the fan start spinning at full speed, but no video, no reaction to power button, what could have I broke Southbridge? Northbridge? It doesn't matter even if i take out cpu and RAM it still starts spinning, tried changin different CPU, RAM, but no luck :/
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Re: Dell l502x
Don't use 4shared, It full of ads!
Any shorts?Comment
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Re: Dell l502x
http://www.4shared.com/file/07bIixPF...502X_bios.html bios dump , I won't use it in future
No shorts found, already changed Southbridge, as the northbridge is in nVidia...
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Re: Dell l502x
wrong; nvidia is gpu,while intel is northbridge and southbridge.http://www.4shared.com/file/07bIixPF...502X_bios.html bios dump , I won't use it in future No shorts found, already changed Southbridge, as the northbridge is in nVidia...
did cpu and gpu get hot ?
voltage on cpu and gpu after power on ?Comment
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Re: Dell l502x
nope, nothing get's hot... strange thing is that as I plug in charger the charge baterry indicator lights up after good 6seconds fan automatically starts spining at full speed, ant it doesn't react to power button at all...Comment
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Re: Dell l502x
As I already reballed GPU, changed northbrdige/southbridge, flashed bios and EC, I will try replacing KBC chipComment
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Re: Dell l502x
KBC replacement helped! As the USB ports where repaired I think there could be the problem... http://s18.postimg.org/v74tpybqx/111...91965195_n.jpg At the component LI 3 and 4 has short and 1 is shorted to 2, 1 to 3 has 996ohm and 2 to 4 1185ohmComment
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Re: Dell l502x
read voltage on cpu and gpu coils when pc is powered on.
does any light blink indicating the error ?Comment
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Re: Dell l502x
Finally got it working!!! Thanks all for help !Comment
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Re: Dell l502x
what was the problem? bad usb part ?Comment
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My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?
Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?
My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
I have tried multiple different Dell power adapters. My Dell... -
Hi,
Could someone help trying to unlock this BIOS, seems that Dell have changed the layout of new Dell Pro 8FC8 bioses from checking HXD - 4000 bits do not need changing, only 2000. However after FF the section starting from '01000' upto 2000 bits and then soldering the chip back it seems that the microchip on the motherboard is recovering the bios back to original settings after first boot. Has anyone found a way to crack this extra layer of security Dell have implemented? Seems both HP and Dell have upped bios security to match Lenovo by implementing extra measures on a separate... -
I would like to share my experience about charging issues with Dell power supplies with the tech community. I am working on a Dell Inspiron 5590, Mainboard 18778-1 with charging problems. The device can be switched on and works so far, only the message appears at startup:
Alert! The AC power adapter wattage and Type cannot be determined. The battery may not change. The System will adjust the performace to match the power available.
The power supply unit is not recognized in the Bios and the charging process is set to "idle". I use original Dell battery, type... -
hello...
the Dell XPS L502x ( Model P11F ) [ DAGM6CMB8D0 rev.D ..3 of lines output LVDS from PCH has short ohm(0 -70) than LCD displat turn ON but is white !!!
i decide to change LVDS ports to Lcd from EXT_LCD graphic Studio Discrete to No need it LVDS lines of PCH use...
according to ُSchematic ,I changed any resistor and... Config_0 and Config_1 EC...but:
1- EXT_LCD_PWM no voltage to enable pwm
2-EXT_LVDS_VDDEN no High to Enable LCD_vcc
and screen is turn off and fan is high Speed!!
Question:
I need to Use Discrete graphic nvidia EXT_LCD ports... -
Dell thunderbolt firmware, extracted from dell firmware update exe. Padded to 1MB.
Some models have a choice of 2 different firmwares, it depends on the dell SKU.
The SKU is in brackets (****)
EDIT: NVM65...
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