I got a laptop Dell e6440 when ever i connect battery or charger laptop turns on by itself without pressing power button & it does not shutdown, when shutdown it it turns off and then turns on by itself i think its BIOS is curropted can any one help me in this
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Re: Plz need help laptop does not shutdown and starts by itslef
post the identification number of the motherboard -
Re: Plz need help laptop does not shutdown and starts by itslef
Looking at a failing PCH????Comment
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Re: Plz need help laptop does not shutdown and starts by itslef
VAL90 LA-9933p REV: 1.0 (A00)Comment
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Re: Plz need help laptop does not shutdown and starts by itslef
I think it will be best to start a fresh thread with the details.
Also, what is the history? Just started this problem or any liquid spill, was dropped, etc. ?Comment
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Re: Plz need help laptop does not shutdown and starts by itslef
ok new postComment
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I have two such machines which is having this issue. After shutdown the system starts on its own in a minute. It does not start immediately. It takes around 20-40 seconds before it starts again on its own. This is driving me crazy and not sure where to start ..
Some very important points :
- Laptop does not auto starts after shutdown if adapter is connected.
- It will only auto start after shutdown if the laptop is in BATTERY only mode.
- I have tried replacing batteries with a known
- if I shutdown the laptop with adapter connected and lets say remove the adapter after 5-10
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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. I have problem with dell laptop E6440 val91 la-9934p rev.1.
I turn on the laptop and it turns off instantly. After 5-6 attempts it turns on normally. I saw that it was burnt PU800, CD3301B Power Controller Chip.
If you see in the photo someone tried to do bypass and remove PR831, PR832, PC820, PR838.
I will replace CD3301B. I have the schematic but i dont know what are the characteristics of other componets to replace...
[Mod. Edit]
Schematic -> https://www.badcaps.net/forum/troubl...cs-theory/trou...01-26-2024, 11:50 AM -
dell 7520 laptop fan spin fast after shutdown ....01-01-2025, 02:27 AM -
Dell Latitude E6440 Laptop Schematic
VAL90 LA-9931P...10-17-2024, 09:47 AM
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