LA-L246P & kbc MEC1515-NM

[rookieme]

Well at this board I had shorted 3V line and burned the 3V buck converter.
I replaced the converter and the MEC1515-NB that was shorting the line.
Now I get the 3V running but system is unable to power on.
So this kbc need some programming? I wasn't able to find any info.
Also it has a second internal line of pins that you can only assume that they have soldered ok.

[TuanTongbadcaps]

Re: LA-L246P & kbc MEC1515-NM

Well at this board I had shorted 3V line and burned the 3V buck converter.
I replaced the converter and the MEC1515-NB that was shorting the line.
Now I get the 3V running but system is unable to power on.
So this kbc need some programming? I wasn't able to find any info.
Also it has a second internal line of pins that you can only assume that they have soldered ok.

MEC1515-NB does not currently have a programming solution for it, we had to skip a lot of boards with this error.

[rookieme]

Re: LA-L246P & kbc MEC1515-NM

that's sad.
Thank you for your reply.

[RAR1991]

Hi, did you find any solution ??? I have the same problem

[memoslar]

Guys i replaced the MEC1515 and i have also same results. Its not powering on. Did you find any solution?

[TuanTongbadcaps]

Some vendors sell the chips New MEC1515-NB With the program 19829-1 19828-1 LA-L243P LA-L246P LA-L248P LA-K661P LA-L24FP LA-K512P you can find it on aliexpress

[memoslar]

I have already bought from aliexpress with the appropriate program but still doesnt power up

[memoslar]

The seller told me to refresh the bios chipset... is that the solution?

[TuanTongbadcaps]

I'm just wondering about BGA reballing, because I often make this mistake

[salvador17]

Hello, I have the same fault, replace MEC1515nb purchased on aliexpress, select program LA-L246P and the equipment only turns on the amber LED but does not turn on, ask if anyone knows how to program? the kbc

[mon2]

What is the full p/n of the original EC?

Is it MEC1515-NB or MEC1515-NM?


According to this YT video, no programming is required:

Dell LA-L241P MEC1515-NB IO controller replacement process (youtube.com)

[mcplslg123]

I dont believe the YT video from my own experience. This MEC1515 is programmable and as mentioned by@ tuan tong, there is no programming solution yet atleast in public domain.
The so called programmed chip from whatever source you buy will never work as they are all fake or not programmed with the target mb as claimed.
Only a MEC1515 from same/similar scrap mb works.
Thats what i've experienced so far. Thats why i fear repairing LA-241-43/46 etc series.

[mactouch]

Anyone have solution on this problem ? I changed MEC1515-NB but not working
MB : GDM50 LA-L246P

[Blackam8899]

Hello, I also changed a MEC1515-NB from a Lenovo donor board to a Dell LA-L243P REV 1.0. ONLY WHEN PRESSING THE POWER BUTTON THE AMBER LIGHT COME ON AND THEN IT GOES OFF. It seems that there is no solution, simply changing it does not correct the problem. I have not yet tried changing the BIOS since this model has two

[Varon23]

Hi. I have the same problem. short circuit on 3v. damaged MEC1515-NB. Maybe buy a system with MFM ready to enter a service tag?

I have an SVOD4 and Vertyanov programmer.

[deviljee]

Hi. I have the same problem. short circuit on 3v. damaged MEC1515-NB. Maybe buy a system with MFM ready to enter a service tag?

I have an SVOD4 and Vertyanov programmer.

did you program it via svod 4?..

[Varon23]

Solution found.

The MEC system must be purchased with software version D0. with the option of entering a Service Tag.
Purchasing an empty system from Aliexpress will not help because the system is on an ARM core with EEPROM blocked by JTAG access. It can only be deleted.

The only solution is to buy the system officially from DELL with an empty DMI. We solder and enter the service tag and the laptop works

You only need to download the BIOS and read the ServiceTag because they often replace housings due to faulty hinges. If we enter the wrong Service Tag and it is not compatible with PCH, there will be a problem. Then replace the MEC with a new one or replace the bridge because it is not enough to reset the CMOS

[zibik]

Mozesz opisać skad bierzesz MEC1515?(Kocham Basię?})
No i jak to dokładnie wyglada procedura po wluyowaniu kbc?

English:
Can you describe where you get MEC1515? (Kocham Basie?)
So what exactly does the procedure look like after soldering the EC

[Varon23]

From DELL. I love bass, as far as I know.

I have one free deal. I bought two, one worked, the other didn't because the CPU was also damaged.

[ferah831208]

Solution found.

The MEC system must be purchased with software version D0. with the option of entering a Service Tag.
Purchasing an empty system from Aliexpress will not help because the system is on an ARM core with EEPROM blocked by JTAG access. It can only be deleted.

The only solution is to buy the system officially from DELL with an empty DMI. We solder and enter the service tag and the laptop works

You only need to download the BIOS and read the ServiceTag because they often replace housings due to faulty hinges. If we enter the wrong Service Tag and it is not compatible with PCH, there will be a problem. Then replace the MEC with a new one or replace the bridge because it is not enough to reset the CMOS

Do u have any link where u can buy this chio ready to attempt that procedure?? I have the same issues with mec 1404-nu I think 🤔 🤔, and I read a lot online and a thread from Vertyanov speaking about this specific chip, a blank chip doesn't work. But in that case supposedly if you use a chip from a donor board it will work. Now I have the same problem with a mec1515, bought a new one in AliExpress it didn't work, only amber light when I press power button, I don't believe bios solution will work because of signals measured in scope, and now I see your explanation and it's the more logical. In this case for what I understood even if I get a mec1515 from same motherboard model, I assume it will not work because of the dmi information verification?? 😔😔