Dell LA-F115P

[RickyGrizutti]

Hey guys, how are you?
I am having a problem with a Dell Notebook (Mother Compal LA-F115P)

The problem is the following: When I connect an original charger, the equipment turns on, but not the display. If the machine is off with the battery connected and plugged into the charger, the charger charges the battery (Therefore it is not a PSID problem (I even have data transfer)).
If I start on battery, the computer boots normally. And here's the weird thing, if I connect a power supply or a generic charger, the machine turns on, shows a display and obviously I get generic charger alerts. The last test I did is power up on battery and plug in the original charger and the machine freezes.

Does anyone have any idea what could be the cause? The equipment came with a changed BIOS, I downloaded it from the official page and updated it with the programmer

Note: The charger works, because with other Dells, they work perfectly for me

[kalilinux25]

Re: Dell LA-F115P

Hey guys, how are you?
I am having a problem with a Dell Notebook (Mother Compal LA-F115P)

The problem is the following: When I connect an original charger, the equipment turns on, but not the display. If the machine is off with the battery connected and plugged into the charger, the charger charges the battery (Therefore it is not a PSID problem (I even have data transfer)).
If I start on battery, the computer boots normally. And here's the weird thing, if I connect a power supply or a generic charger, the machine turns on, shows a display and obviously I get generic charger alerts. The last test I did is power up on battery and plug in the original charger and the machine freezes.

Does anyone have any idea what could be the cause? The equipment came with a changed BIOS, I downloaded it from the official page and updated it with the programmer

Note: The charger works, because with other Dells, they work perfectly for me

hi mate good day , ill help you lets focus on the charger ic test all voltage f the charger ic .

Tip always put schecmatic

[RickyGrizutti]

Re: Dell LA-F115P

Hello, thanks for answering! I didn't understand. Do you want measurements to know the measurements of the CHARGER (PUB01)? If so, which pins do you want to know?

[mon2]

Re: Dell LA-F115P

What is the voltage to ground of the PSID at the dcin connector?

[RickyGrizutti]

Re: Dell LA-F115P

What is the voltage to ground of the PSID at the dcin connector?

I couldn't tell you exactly right now since I'm not in the workshop. But what is that question about? I clarified that the PSID is not only in 3V on both sides (jack and EC), but by measuring with an oscilloscope I have data transfer, what is necessary for the EC to know that it is an original charger that is connected.

[mon2]

Re: Dell LA-F115P

What is the power rating of the original charger that is failing?

What is the power rating of the generic adapter that works?

There are numerous public articles on the operation of the single wire communication for the PSID line and with use of emulators to allow for home brew adapters.

[RickyGrizutti]

Re: Dell LA-F115P

What is the power rating of the original charger that is failing?

What is the power rating of the generic adapter that works?

There are numerous public articles on the operation of the single wire communication for the PSID line and with use of emulators to allow for home brew adapters.

The original charger is 65 watts.
The alternative charger also 65 watts
And I have a 30v 5 amp adjustable source

[kalilinux25]

Re: Dell LA-F115P

The original charger is 65 watts.
The alternative charger also 65 watts
And I have a 30v 5 amp adjustable source

better use yoour original charger

[RickyGrizutti]

Re: Dell LA-F115P

better use yoour original charger

I'm using the original charger

[mon2]

Re: Dell LA-F115P

To learn about the PSID interface details:

https://www.mikrocontroller.net/topic/186476

[RickyGrizutti]

Re: Dell LA-F115P

To learn about the PSID interface details:

https://www.mikrocontroller.net/topic/186476

Perhaps I'm not explaining myself well. I have an original charger (which works and has the same watts as the device uses) (I tested it on other Dells) that when I connect it to the device, the machine turns on, but there's no image, even though I have one-wire communication (measured with an oscilloscope). On the other hand, when I connect a regulated power supply or a generic charger, the machine turns on, displays an image, but obviously doesn't charge the battery and runs slowly. The question is, what could be happening that with an original charger working, the device doesn't display an image

[mon2]

Re: Dell LA-F115P

Read your post #5