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Electronics => Repair => Topic started by: Kim_555 on March 11, 2017, 09:15:58 am

Title: How to easy desolder BGA chips (CPU, etc..) in present-day Lenovo laptops.
Post by: Kim_555 on March 11, 2017, 09:15:58 am

Hi all.
        If You engage laptops repair, you know hat in Lenovo all BGA chips is with "black compound" and when we unsolder it - we have big chance to damage contacts in motherboard.
        Fast and safe way before desoldering - is use WD-40. Before desoldering - we add a small amount of WD-40  under chip,  and waiting 20-30 min. Then we can desoldering chip on infrared station.
       We can see this process in my video

 www.youtube.com/watch?v=zWLC_O1XBhY (https://www.youtube.com/watch?v=zWLC_O1XBhY)

       In this video i speak russian, but i think everything will be clear. I wish all successful repairs.

Title: Re: How to easy desolder BGA chips (CPU, etc..) in present-day Lenovo laptops.
Post by: 0xreverser on April 20, 2017, 01:08:46 pm

This is a awesome video, thanks. You tell waht happened to the sides of the chip but i cant understand russian. Can you tell?

Title: Re: How to easy desolder BGA chips (CPU, etc..) in present-day Lenovo laptops.
Post by: Rasz on April 20, 2017, 04:07:52 pm

he pulled some unused pads, afair nothing to worry about

Title: Re: How to easy desolder BGA chips (CPU, etc..) in present-day Lenovo laptops.
Post by: Armadillo on April 20, 2017, 09:08:41 pm

Thanks, I enjoyed your videos. To increase your subscription to the channel, can you speak in English/text?