Re: Dell E5440 completely dead
I'll try it and then i'll try bios dump, report in a while
I'll try it and then i'll try bios dump, report in a while
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Re: Dell E5440 completely dead
Spider can you please give me your opinion on this ->https://www.badcaps.net/forum/showth...t=98968&page=2
After a shortcircuit i have 20Ω short to the GND, same situation probably.
From post #31 and so on.
Thank you in advance.Comment
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Re: Dell E5440 completely dead
Needed bios dump too, now power on but return LED error code "A possible processor failure has occurred."
Perhaps a voltage is missing from what i solder OR cpu is indeed fried?Comment
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Re: Dell E5440 completely dead
Try with a known good BIOS first. The check the voltage on all the coils with laptop ON. Post your results for each coil.Comment
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Re: Dell E5440 completely dead
Just noticed this laptop has a EC chip too. Can you confirm it is U86 to flash it too?Comment
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Re: Dell E5440 completely dead
U86 is an AND gate. KBC/SIO is U38 (MEC5075), it is programmable but I don't think its an issue. You'd need SVOD programmer for that. Chip also has 2 rows of pin, 1 visible on the side and another under the chip.
Try a known good BIOS and post your voltage measurements.Comment
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Re: Dell E5440 completely dead
I'm waiting for bios with confirmed vPro support, posted request in E5440 bios thread.
After that i'll flash it and try again.Comment
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Re: Dell E5440 completely dead
Fixed.
I replaced U1, i flashed the bios SMDFlea suggested and worked.
Never before seen a "A possible processor failure has occurred." LED error blink due to bad bios and/or bios chip.
Well i assume i learn as i live.
Thank you both!
Back to 7510 problem now that hunts me in my sleep.Comment
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Hi, I disassemble my laptop to replace the speakers, to access them, you have to remove everything including the heat sink and fan, unscrew the motherboard, lift it up a bit to access the speaker wire.
that was not the first time I dissasemble it, i did replace the same speaker a few year ago and I repaste it last year, so I had nothing to worry about. but when I put everything back together, its completely dead.
After a bit of investigating, i found one pin of the status led ribbon cable that was unglued from the cable and bend touching another pin, I bend it back at his place... -
I have bought a not complete and defective Dell Latitude 5520 for parts (needed the networkconnector (RJ45) to repair a other board).
Have repaired the other board (Dell Latitude 5540) and I wanted to know if I could find out what is wrong with the 5520 board (SouthPeak15 TGL MB 8L 19819-1) and perhaps repair this one also.
After connecting the USB-C charger (both USB-C ports on the laptop, does not have an other option) and pressing the power button, nothing happens (no lights or fans, no capslock).
Have checked with a thermal camera, and there are a couple of things... -
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:
A friend gave me this DELL WD15 dockstation that does nothing. Not detected by computer, no digital output.........just leds shines when it’s plugged in.
Here are the findings, followed by good pictures. :-)
When pluged in, LED3 glows
Measuring some voltage in the circuit.
Inductors
- PL202 has 5V
- PL201 has 3.3V
- PL300 has 1V
V. Regulators
- UT30 has 19v as input and 6V as output. It seems ok.
- UT27 (same reference as UT30, has no input/output voltage).
Thermal find...07-09-2025, 12:12 AM -
Hello!
I have a Dell Latitude E5440 on bench that is completely dead, no led, no other activity like there is no power adapter connected.
The power_jack_in has voltage 19,5V, the PL4 has 19,5 in both sides and the PQ 4 has 19,5 Voltages too except the pin 4 that has 9,37v.
Any advice?
Thank you in advance!
schematic: https://drive.google.com/file/d/0B6I...tOR2VoV3M/view
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