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acata started a topic Lenovo Ideapad slim 3 not power on

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-30-2024, 09:42 PM
Lenovo Ideapad slim 3 not power on

Lenovo Ideapad slim 3 not power on after consumer problems is can not on after sleep mode.
And the consumer asked for reinstalling OS.

I reinstalled windows 10 and working fine. After i leave it for updating windows and goes to sleep mode. Now it cant draw any input from power supply.

Motherboard number is GS450&GS550&GS750 MM-C821 REV: 1.0

Check the main power rail for 20v input ok
No amper input from Power supply 0.013a
Mosfet PQ201 20v and 26v ok.
3.3v exist
1,8v exist
5v exist

12v from baterai exist....

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acata replied to WD MY PASSPORT 2TB WD20NMVW BOARDVIEW

in General Electronics Technical Discussion

09-12-2024, 08:59 PM
Not yet, sir..
I'm still working on it and I can't find 3 more pin to connect the wire. Thats why i need any of diagram, schematic or boardview for this board.

Or if someone figure it out. I need the picture or a drawing of the pins to the connector.

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acata started a topic WD MY PASSPORT 2TB WD20NMVW BOARDVIEW

in General Electronics Technical Discussion

09-12-2024, 01:19 AM
WD MY PASSPORT 2TB WD20NMVW BOARDVIEW

This might out of the topics but here I post on General electronic.

I've got client who broke his external HDD connector.
It's WD MY PASSPORT 2TB WD20NMVW with USB 3.0 connector. The connector pads tear apart.

I've been looking around for the diagram or schematics for this board. But have no luck. I don't have any membership on any storage device forums.

Would love if you can help me.....

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acata replied to Dell 5779 Boardview/Schematics

in Schematic Requests ONLY!

08-18-2024, 09:46 PM
Thank you...

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acata replied to ACER 4540 COMPAL LA-5521P Rev:1.0

in Schematic Requests ONLY!

08-18-2024, 09:44 PM
Thank you.....

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acata started a topic ACER 4540 COMPAL LA-5521P Rev:1.0

in Schematic Requests ONLY!

08-11-2024, 10:07 PM
ACER 4540 COMPAL LA-5521P Rev:1.0

I need a schematic and diagram for ACER 4540 COMPAL LA-5521P Rev:1.0

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acata replied to Acer V5-471G Can't Read BIOS

in Troubleshooting Laptops, Tablets, and Mobile Devices

08-08-2024, 08:46 PM
This one works so far.
But I still can't turn off the fast boot.
I have already tried another version of Acer [URL="https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/bios-requests-only/43280-need-acer-v5-471pg-bios-dump"]v5-471 BIOS[/URL] but I have had no luckThis one works so far.
But I still can't turn off the fast boot.
I have already tried another version of Acer [URL="https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/bios-requests-only/43280-need-acer-v5-471pg-bios-dump"]v5-471...

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acata started a topic Acer V5-471G Can't Read BIOS

in Troubleshooting Laptops, Tablets, and Mobile Devices

08-05-2024, 07:40 AM
Acer V5-471G Can't Read BIOS

I have Acer V5-471G Can't Read BIOS.
BIOS IC is new and the old one also in good condition.
I already tried several BIOS DUMP, but Is still can't enter BIOS.
Once the laptop turns on, it just goes directly to os.

PIN 1 3.3V
PIN 2 3.0V
PIN 3 3.4V
PIN 4-6 0V
PIN 7 3.4V
PIN 8 3.4V

19.5v in 0.6a
5v ok
3.3 v ok
1.2v ok...

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acata replied to Need Acer V5-471pg bios dump...

in BIOS Requests ONLY!

08-02-2024, 08:25 AM
thank you [USER="237374"]SMDFlea[/USER]
I just found that if this version share similar BIOS.JQSSMDFleathank you [USER="237374"]SMDFlea[/USER]
I just found that if this version share similar BIOS.JQS

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acata replied to Need Acer V5-471pg bios dump...

in BIOS Requests ONLY!

08-02-2024, 07:17 AM
Need acer v5-471g bios file.
It just can't boot to bios F2 or change boot F12.
I just can enter to diagnostic once it can't boot to os (unpludge).

board is:
PETRA UMA MB 11324-1 48.4VM02.001
INTEL CELERON 887 SR0VA
Here is the backup...

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acata replied to Asus X441UV REV2.1 remove Nvidia gpu

in Troubleshooting Laptops, Tablets, and Mobile Devices

07-19-2024, 03:22 AM
I just have the boardview.
The laptop turning on. No display.
Vin 19.5v distribute entirely.
1.2v ok
3.3v ok
5v ok
MOSFETs good.

Everytime it boot up on 1,2a, the gpu start to heat up that I can't touch. I don't have a thermal camera. Just using my finger tips to track the heat.

Please guide me if my judgement are incorrect....

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acata replied to Asus X441UV REV2.1 remove Nvidia gpu

in Troubleshooting Laptops, Tablets, and Mobile Devices

07-18-2024, 12:01 AM
here is the reference. X441UAR with no GPU....

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acata started a topic Asus X441UV REV2.1 remove Nvidia gpu

in Troubleshooting Laptops, Tablets, and Mobile Devices

07-17-2024, 11:59 PM
Asus X441UV REV2.1 remove Nvidia gpu

I am working on Asus X441UV with Nvidia 930mx 4gb.
The whole power rail is fine except the GPU heats up at the first boot.
is it possible to remove the entire GPU component and flash a similar BIOS?

FYI:
I don't have a BGA workstation so the option is just to remove all GPU components with Hot Blower QUICK 850 analog and solder....

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acata replied to dell latitude e6420 charger with 19v 3,3a

in Troubleshooting Laptops, Tablets, and Mobile Devices

07-17-2024, 07:07 PM
And thank you for your assistance ...

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acata replied to dell latitude e6420 charger with 19v 3,3a

in Troubleshooting Laptops, Tablets, and Mobile Devices

07-17-2024, 05:43 AM
I found a donor and replaced the ic cd3301. And i need to jumper pin 12 to PC274 and it worked.
Pin1 19.65 (psu)
Pin9 3.3v
Pin18 3.3v
Problem solved....

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acata replied to dell latitude e6420 charger with 19v 3,3a

in Troubleshooting Laptops, Tablets, and Mobile Devices

07-16-2024, 10:31 PM
I just found that the ic selector is burnout. its PU14, CD3301. Is there a way to bypass this? or just replace it with the new IC?

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acata replied to dell latitude e6420 charger with 19v 3,3a

in Troubleshooting Laptops, Tablets, and Mobile Devices

07-16-2024, 09:20 PM
I'm sorry. On 19v or 19,5v input?...

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acata started a topic dell latitude e6420 charger with 19v 3,3a

in Troubleshooting Laptops, Tablets, and Mobile Devices

07-16-2024, 01:26 AM
dell latitude e6420 charger with 19v 3,3a

I'm working on dell latitude e6420. Default power input is 19,5v 3,34a. But unfortunately, it's not turning on whenever i charge with the default power input. Instead it's turning on when i switch it to 19v 3,3a.

What do i missed? Is there any faulty on the machine so it's can to be turned on with the default power input.

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acata started a topic ASUS ROG Phone 5 ZS673KS schematics and diagram

in Schematic Requests ONLY!

12-30-2023, 04:54 AM
ASUS ROG Phone 5 ZS673KS schematics and diagram

Hi all..
One of my costumer bring in an [B]ASUS ROG Phone 5 ZS673KS liquid damage.
[/B]
After cleaning all of the components from water corrosion the device turn on with some crash capacitor.
Unfortunately, the touchscreen not responding. While the display are fine without any glitch.

I already searching here for any topic. But can't find any..
Please help me to find the schematics & diagram.

Thank you guys..Hi all..
One of my costumer bring in an [B]ASUS ROG Phone 5 ZS673KS liquid damage.
[/B]

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