PS4 slim not powering on after lightning hit to electrical grid

Hi,

You may have to remove the PSU and open it up and inspect and test for any damage.

If you have a DMM (digital multimeter) this will make it easier to test the fuse in the PSU to check if it is blown or not by using its Ohmmeter function to test the fuse for continuity, as it may not be obvious that it has blown by just looking at it.

Here’s the ifixit PlayStation 4 Slim 電源ユニットの交換 guide, that will help with the removal of the PSU.

Never opened a PS4 PSU myself but usually with PSUs the main fuse will be located near to where the power connects to the board and it usually has a board designation of F (F = fuse) e.g. F1

If the fuse has blown then hopefully replacing it will be all that is necessary but still check for any other component damage e.g. diodes in circuit following the fuse etc. If there is or you’re not quite sure, post some close up images of the board back here. Here’s how to do this on ifixit iFixitでの質問に画像を追加する方法