Toshiba Satellite L50-C-1VK / Motherboard DABLQMB16B0 Rev:B / Identify IC

[prolixo]

Hello friends!



This laptop has short on the line of 3V3.

After visual check, I detected component in the photos melted, burnt, and shorted.

I could not identify, to the lack of scheme, which I looked for.



Some help?

[anshad]

Re: Toshiba Satellite L50-C-1VK / Motherboard DABLQMB16B0 Rev:B / Identify IC

That is actually a MOSFET similar to https://cdn.badcaps-static.com/pdfs/...efa9f251be.pdf

Usually those are used to conditionally pass 3V, 5V always/S5 Rails to VS/RUN rails after the power button is pressed. They are less likely to fail their own. My guess is something on the output side has short circuit/leak which caused the MOSFET to overheat and burn. Start removing the MOSFET and check in the output side first

[prolixo]

Re: Toshiba Satellite L50-C-1VK / Motherboard DABLQMB16B0 Rev:B / Identify IC

Hello!
It's not what I thought... pads are diferent...

Any tips?

[prolixo]

Re: Toshiba Satellite L50-C-1VK / Motherboard DABLQMB16B0 Rev:B / Identify IC

Maybe 42RV ...?

[anshad]

Re: Toshiba Satellite L50-C-1VK / Motherboard DABLQMB16B0 Rev:B / Identify IC

Hello!
It's not what I thought... pads are diferent...

Any tips?

I have an HD image of your board and the pins seems to be matching with the MOSFET datasheet i have posted.

[Claudiomfa]

Re: Toshiba Satellite L50-C-1VK / Motherboard DABLQMB16B0 Rev:B / Identify IC

I have that mainboard here. The component as marked with 42CA 1N

[prolixo]

Re: Toshiba Satellite L50-C-1VK / Motherboard DABLQMB16B0 Rev:B / Identify IC

Hi Cláudio!
Nice.
Thanks for the help!