Chosen Solution
I have an Ideapad that is about 7 years old. It worked great until I opened it for the first time to replace the SSD with a bigger one. I was very careful when opening it, and didn’t mess up with anything else other than replacing the old SSD with a new one. After that, the laptop won’t turn on anymore. I even put the old SDD back to see if it would work, but it simply doesn’t turn on. I press the power button, and nothing happens. Any idea? Update (10/30/2022) Ideapad Y700 Touch 15" Unfortunately, I didn’t disconnect the battery from the motherboard before replacing the SSD. It doesn’t show it’s charging when I plug in the charger. Update (10/31/2022)
Hi @srgbrg “IF” the motherboard’s model number is NM-A541 (printed on motherboard) check that the fuse marked PF1 is OK and hasn’t blown. If it is blown it is a 12A_24V_F1206HB12V024T/M i.e. 24V 12A smd fuse. I couldn’t find any suppliers except the one I linked and you have to order it from them as there is none in stock. You may have better luck finding one elsewhere. If the fuse is OK here’s a link to the schematics that will help as you will have to track the problem at board level.
@srgbrg this is strictly a supplement to the excellent answer provided by my esteemed colleague @jayeff. Your board indeed looks like a 15ISK NM-A541. There are two fuses. PF1 is for the AC adapter and PF2 is for the battery. You do want to check both for continuity, as well as for power, once you disconnect and reconnect your battery. Let us know what voltages you get on those and if they both have continuity. Since you have the schematic follow through with page 3 and test the voltage rails. See where you do get power. Page 45 shows you the power switch and it appears to have power-on pads. Those usually can be jumped to bypass the power switch, if that would be a concern. General area only since I do not have a great image of it. Had to lift this one from an auction site
