estabilito
Senior Member
Last Activity: Yesterday, 08:15 AM
Joined: 08-27-2020
Location: warsaw
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If someone will search resolution in similar situation - i've reballed CPU and laptop working fine. -
Goddamit, as i thought - anyways, thank you so much for reply
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Can you help me with bios? honestly i don't know how to do it I attached bios from dell and fujitsu....
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Swapped CPU from Fujitsu to Dell - boot guard?
Hello, i just swapped CPU(i5-8350u) from fujitsu lifebook e548 to Dell Latitude E7490 Board, all resistances are fine, laptop wants to boot but after 1 second draw of 0,3A its turning off, after pressing power on button same situation. I've cleaned ME region and same situation. Is it boot guard problem - and if it is, is it any chance to bypass this or this cpu just can't be used in Dell. -
Dell G7 7790 no display
Hello, i have dell g7 7790 Vulcan15_N18E with i7-8750h and rtx 2070(n18e-g2-a1).
I tried different bios but same result: laptop turn on, then first reset, then second reset and then stays on without any picture.
Laptop react for holding power button to turn on but nothing more.
Resistance on cpu: 3-4ohms.
Resistance on gpu: 0.3-0.4ohms
resistance on vram(samsung hc14): 20ohms
Resistance on pch 1.05: 40ohms
Laptop is charging battery normal.
What else i can check? -
Tips geting oxidized when using wick
Hi, i have weird problem - when i'm using soldering wick to clean BGA balls under CPU or PCH on motherboard my tips(different types) getting oxidized very fast and lost all power.
i Was trying different types of wick, flux - no difference. I can't even clean one full socket and i need to use deoxidizer in half-time.
Temperature: 350-365celsius
station: jbc cd-2bqe
Wick: edsyn
flux: warton hf rework jelly
Do you have any tips?... -
Perfect! Thank you so much for the anwser
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Dell Latitude E5590(La-f411p) water damaged
Hi,
I have water damaged Dell Latitude E5590 around charging ic.
Laptop was dead but i replaced some components like capacitors, resistors, resoldered charger(intersil 9538h) but traces under PQ904 dual mosfet(AOE6936) was burnt.
I rebuilt traces and both mosfets(PQ904 and PQ905) and after all this work laptop started turning on.
I dont have battery so i want to be sure if laptop behaviour is normal before buying.
On PL902 i have weird voltage around 5Volts, on battery socket voltage looks normal - 13.5v.
Is this voltage on pl902 normal?... -
Not working
just one beep and like 0,38a draw for second....
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S/N PF-1C1578
type 20N3-SS68S06
No display, onboard ram was suspected but i removed memid resistors and now laptop even recognize when slot ram is empty(beep) but with stick inserted turning on without image....Leave a comment:
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MSI Leopard 66 11UH
CPU: i7-11800h
GPU: RTX 3080
Board number: MS-1543
I have weird problem with this laptop:
- All CPU Phases have weirdly high resistance like 70-80ohms
- PCH coil too have weirdly high resistance like 300-400ohms.
- Laptop starts for second, pch look like it's getting hot from down right corner.
- PCH on first few seconds getting 50-60 degrees celsius
Turning on but only for 1-2seconds and then off, tried resetting bios but nothing changed.
Turning on just for second,... -
Nintendo Switch Oled dead
Hello, i bought dead nintendo switch oled.
after plugging charger with amp meter device shows 5v and 0,0 or 0,02 amperage draw.
I inspected motherboard and someone tried to reflow or replace m92t36 and didn't do it well, i resoldered it proper and find that usb-c fuse was blown too(replaced it).
After this device started to draw 15v and something around 0,48 but only for few seconds after this returned to 0A draw.
I tried to plug motherboard without battery - shows 15 0A and when charger was pluged i put battery back in then console started to charging battery but stuck... -
Re: Need bios dell latitude 3410 plz
it's working - thanks!Leave a comment:
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Re: Need bios dell latitude 3410 plz
Hello, i need to clear admin password. When i use files u send earlier, laptop work without password but can't set service tage and exit manufacturing mode. i've attached org dump with password....Leave a comment:
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ProBook 650 g2 audio/headphones problem
I have problem with probook 650 g2 - laptop shows connected headphones Even without them. If i pług headphone Jack - computer show disconnected headphones. Speakers work when i change sound output.
I replaced Jack board - nothing changed. Computer shows connected headphones even without Jack board connected to motherboard. -
HP EliteBook 840 G4 won't power on
Hello, i have problem with HP EliteBook 840 g4, laptop was working normally but only on 1 ram slot - second was damaged so i decided to unsolder secon slot, i did it properly - no solder joints shorted - but now laptop won't start, zero reaction for clicking power on button and weird behaviour - laptop shows orange light means charging - even if there is no battery inside.
What should i check first? -
Re: Acer E5-573g weird behaviour
Another thing: i desoldered PQ55: IMD2AT108 and after this laptop turning on and showing charging even if i first plug charger in to wall socket and then into laptop but issues with charging still are there - 8.4v on charging coil, when i turn on laptop - 2.4v on this coil.
Under thermal camera nothing getting really hot, when i checked it with "clicking sound" - just 1st mosfet and PQ55 were pulsating but still not really hot - around 25 celsius.Leave a comment:
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Re: Acer E5-573g weird behaviour
On the 1st mosfet there is 9.4v on gate, on the second mosfet(another side of board) there is 19v on gate. - measured in situation when i plug the dcin jack first and then to the wall (laptop showing orange light but not charging - 8.4v on charging coil - after 10hours battery charged around 0.05v - if it can be named as charged).Leave a comment:
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Re: Acer E5-573g weird behaviour
Battery charging mosfets and dcin mosfets checked - ok
another behaviour noticed: when i plug the dc jack into laptop, then to the wall socket diode showing charging - orange and in this situation voltage on battery charging coil is around 8.4v but when i turn on laptop, this voltage dropped to 2.4 v and staying this levelLeave a comment:
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