Fried capacitor on Dell-5520. Guilty as charged.

[Lapsmith]

While installing new SSD's in my new to me Dell 5520 laptop, I dropped a screw which sparked and fried a capacitor. Yes, I know I should have disconnecte the battery first Doh!😡. The laptop runs fine, but I want to replace the capacitor asap. I ordered and received the replacement (10uF, 25V 0603). Since I also managed to burn up one of the pads it was soldered to, my main question is whether it is okay to solder this capacitor on top of another capacitor (same size, same function in circuit). Specifically, PC4428 is bad and no way to easily solder to the board. I would like to solder it piggy back to PC4427:


Here is the location of PC4428



And here is PC4427



My other question, just for my own education, is why are these two caps necessary, since there appear to be a bank of 12 of them (on the schematic, at least?



Here is the damage and I will remove the remains of the old cap to make sure it doesn't short

[stj]

what the schematic doesnt show is the distribution of the caps,
they are connected between different i.c.'s to stop noise from one effecting others.

[Lapsmith]

Copy that, thanks.

Regarding stacking the two smd capacitors, would heat dissipation be an issue? Do they even get warm? I'm thinking not since they don't have a power rating. Any other reasons not to do it?

[stj]

it shouldnt be an issue, clean the damaged area first and see if you can recover a connection-point

[tbsmith]

it shouldnt be an issue, clean the damaged area first and see if you can recover a connection-point

Thanks, will do. I'll remove the mobo to make sure no damage on the other side and hopefully get a good connection point on the top side.

[tbsmith]

Just to close out this thread, I removed the remnants of the old capacitor and the traces on the ground side were gone. So I mounted the replacement cap directly on top of the other one (PC4427) and it is working fine. Thanks for all the help! Will be donating to this awesome site.