I traced what the fault of the motherboard could be and discovered that PU3 got hot (see attached schematic) when the power button was pressed. Boardview can be of immense help. I appreciate all candid assistance.
HELP: Dell Latitude D620 Compal LA-2791 Rev 1.0 UMA not powering
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Re: HELP: Dell Latitude D620 Compal LA-2791 Rev 1.0 UMA not powering
@Stevedb; I found 4.8v on presumably LDO5 or LDO3 because I don't know how find the exact pin numbers. Also, somewhere on one of the PU3 pins, I measured 3.2v. What can I suspect?Comment
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Re: HELP: Dell Latitude D620 Compal LA-2791 Rev 1.0 UMA not powering
Datasheet https://cdn.badcaps-static.com/pdfs/...f508d059dc.pdfComment
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Re: HELP: Dell Latitude D620 Compal LA-2791 Rev 1.0 UMA not powering
Here I attached the order.
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Re: HELP: Dell Latitude D620 Compal LA-2791 Rev 1.0 UMA not powering
@SMDFlea & @harshana: I could not find any dot on the PU3. Instead, I discovered that there was a dot on the board signifying pin 1. In the course of my investigations on PU3, pins 7, 9 and few others before pin 14 shorted to ground. I also discovered that on the pins configuration image sent by SMDFlea, GND is on pin 23. I'm confused, someone please help me!Comment
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by diamonI have a Dell Latitude 5530 with a damaged RJ45 network connector. See the attached pictures.
Have already searched on Farnell / Aliexpress / Ebay and had contact with several suppliers on Aliexpress and Ebay, but they cannot deliver this connector.
Is there someone inside the EU, who has these connector(s) or perhaps defective motherboard(s) for these laptop models I have mentioned in the topic title.
Pictures of these boards:
Dell Latitude 5520 https://www.ebay.com/itm/256052956663
Dell Latitude 5530 https://www.ebay.com/itm/125844181534
Dell...4 Photos -
by F R 2568Hello all,
this is my first post, so if I make mistakes please do not hesitate to point them out, thank you in advance.
I got a Dell Latitude 5420 (Service Tag: 7RFM6D3, Motherboard: GDF40 LA-491P Rev.: 2.0 (A01)) which does not start and I want to repair it. These are the symptoms:
If the laptop is only connected to the AC adapter (battery removed):
When I press the power button, the keyboard backlight and the display backlight are turning on. Caps key light is lightning, but key does not respond to pressing it.
The power/battery... -
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Dell Latitude D620 Laptop Boardview
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Channel: Schematics and Boardviews
10-22-2024, 04:33 AM -
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