Lenovo LaptopLenovo Y40-70

Lenovo Y40-70 Disassembly

In this guide, I’ll explain how to disassemble Lenovo Y40-70 to remove and replace the battery, hard drive, ram, keyboard, palm rest, wireless card, motherboard, heat sink and cooling fan. Refer to this guide, you can repair, upgrade, the clean cooling fan for your Lenovo Y40-70.

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Remove all screws from the bottom case.

The bottom case has been removed.

Under the bottom case, you can access the battery, hard drive, RAM, wireless card, speakers, heat sink and cooling fan.

Remove the screws securing the battery. Disconnect the battery power cable and remove the battery.

The laptop installed a 7.4v, 6600mah Li-ion battery, Lenovo part number: L13M4P01.

Remove the RAM, Lenovo Y40 has two ram slots. Only one RAM was installed.

Ramaxel 4GB RAM

Disconnect two wireless card antennas and remove one screw. Take it away from it’ slot.

Intel Dual Band Wireless-AC 3160 wireless card. Lenovo model: 04X6034.

WD slim hard drive

Left speaker

Right speaker

Lenovo Y40-70 cooling fan

The motherboard has been removed. Now you can access the keyboard and touchpad.

USB board

Lenovo Y40 heat sink

Lenovo Y40-70 motherboard

The cooling fan

Lenovo Y40-70 cooling fan comes from Foxconn.

For more guides, check out the Lenovo Y40 device page.

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  1. The bottom case of my Lenovo Y40 has a crack in it. I have searched the internet for a replacement part, but can not find one. Any suggestions on where I can get one. Thanks.

    1. Mine did the same thing, this is my 2nd Lenovo Y series, both have casing issues, 1st one is desk bound due to damages to the cables in the hinges after the casing started falling apart. This 2nd one I bought an accidental warranty (thank god), and sure enough they had to send it in to get the housing replaced due to cracking and a popped rivet for a screw hole… not to mention my touch pad stopped working all in less then 1yr of ownership. The original Y40 they sent me had defective speakers out the box… they hot swapped it for me at least. I think I learned my lesson, not buying another Lenovo quality sucks. I just called today again, because both my touchpad and mouse stopped working… the lady I spoke to was trying to blame windows 10 upgrade, which worked fine for about a month now. Blah. Good luck with yours, I suspect you have 2 options use it as is and hope it doesn’t cause harm (like my 1st one), or send it in and $$

      1. Daniel,

        I have 2 of these. Exact same model. One belongs to my son. They were purchased on the same day. We both had the same exact issues. Touch pad, keyboard, hinge… Mine also only had battery issues (the batteries suck! and have been replaced twice), and I only hS bluetooth capability for about a month. They fixed it once, but then refused to fix it again claiming it was a software issue and ergo, not covered by our 2 year extended warranty (thank goodness we got that because we both needed it multiple times!). I’ve never had more issues with a computer than with this laptop. I’m amazed it still works, to be honest. I almost always need to have it plugged in to use it. The battery dies within a few hours, being in sleep mode. I think this is an “Idea Pad?” Well, it seemed like a good idea at the time….. 🙁

  2. Can i able place a sub woofer inside lenovo y 40 as like y 50 model, is that possible? is there any connections for that?

  3. I guess whoever made this instruction set did not really remove the keyboard. It appears that the only way to replace the keyboard is to melt the welds holding the keyboard cover plate in place. What a horrible design!

      1. On replacing the keyboard, it looks like one has to replace the while bezel that everything mounts to? Everything is riveted in!

  4. You are correct. The only long-term, correct method of replacing the keyboard is to replace the palmrest/keyboard assembly. Unfortunately, there are other manufacturers who made laptops with this same design. Yes, it is an incredibly horrible design. IMO, it’s a way for the manufacturers to make laptops more disposable since replacing the assembly (since it’s so hard to find one at a reasonable price) is usually not economically feasible.

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