I have a switched-mode PSU for a gaming laptop. It has a bad habit of burning out the switches on mains extension panels when I turn it on (two in the last four days). The turn-on surge is always audible and spectacularly visible (sparks) if I plug in with the power on. I don't think the PSU is faulty (I have two to compare), probably just not that well-designed. I need to turn it on and off fairly regularly - it's not possible to leave permanently powered on.
I qualified in electronics (before SM-PSUs!) and write software these days, but I understand roughly what is going on.
Is there anything I can put in series on the input side to reduce the spike? A ready made device would be great, but I'm happy to build something. I'm guessing some sort of inductor will do the job, but I'm not sure of all the factors/trade-offs involved and I'd rather design well than just over-specify, plus I don't have any serious test equipment left.
Or is there another approach?
The PSU is specified as 100-240V / 1.7A AC in, and 19.5V / 6.15A / 120W DC out. I am in the UK where we use the full 240V.