Dell 3521(la9104p).its giving 7 beeps.thats means cpu core supply is not generation.i have changes isl95833 than also same problem.plz help
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Re: Dell 3521 LA9104p.cpu failure
Either PCH or cpu is bad -
Re: Dell 3521 LA9104p.cpu failure
THanks but problem solved.it was not pch or cpu.1.2k resistor open.it took lots of time to find outComment
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Re: Dell 3521 LA9104p.cpu failure
Can you upload and show the image of tje resistor please?thanksComment
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Re: Dell 3521 LA9104p.cpu failure
dell 3521 la9104p laptop not charging, charging ic good. 2 second detect charging after descended charging, lap working power adapter & battery. how to fix charging problem
plz help meComment
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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 all, I hope this is the right place to post.
I'm having a problem with a Dell 9310 which is posting 2 orange, 4 white lights on startup (hangs on Dell BIOS logo). The service manual says its a RAM failure.
I've taken the motherboard out and noticed that one of what looks like an SMA 0805 resistor has blown (see photo). The board is an LA-J144P Rev 2.0(A01).
1] Could someone confirm what the component that has blow actually is (and where I could get another from).
2] Whether this component is likely to cause the RAM failure issue, and if replacing... -
it was working yesterday, i opened it up and saw this mess. boardview and schematic uploaded for convenience.
PU200
pin 17 vreg5 = 0v ~ solder joint was corroded and flicked right off with my probe, was able to get clean and reflow, rest look fine.
pin 8 vreg3 = 0v
pin 13 en = .2v
pin 1,6 entrip1,2 = 0v
b+ and b++ = 19.5v
+5valw = 0v & 25+ohm to ground
+3valwp = 0v & 25+ohm to ground
i cleaned the board up just a little and can get more pics.
where should i be looking? thx... -
Hi everyone,
I have here a broken Dell Precision 5520 / LA-E331P r2.0 to play with
I found the schematics for r1.0, but not for r2.0.
The situation
- the laptop turns on, but the screen stays black -> the dell diag-LED shows the blink pattern for "CPU failure"
- the voltages close to the CPU stay at low
- I don't see any hotspots on the PCB (thermal imaging camera)
- some spots/areas on the PCB indicate some kind of liquid "damage"
Before I start digging though 70+ pages of schematics, maybe somebody... -
I have this laptop a dell XPS 13 9310
Power on is ok, stuck at dell logo flashing 2 amber and 4 white (link dell service manual) 2,4 Memory or RAM (Random-Access Memory) failure
I believe this is the spec from using micron tool to decode marking
Images of the ram
I am thinking to replace but wondering if there is a possibility to test while in circuit to find the faulty module? I am doubting there is any reasonable test possible while in circuit as most ram ICs I have tested previously, I have done while off board / removed.
Another...11-24-2024, 09:06 AM
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