My wifi router in my bedroom does not have auto ON/OFF function. I don't like to have strong wifi signal in my bedroom all the time. So, I have a digital timer to switch on and off the power in a scheduled way (ON at 6 am and OFF at 1 am).
More important, it can control myself so that I won't work after 1 am. :P
The timer works perfectly for a year but it was broken with no reason... Very embarrassed that I forgot everything about electronics I learned from school...
It seemed no hope to get it working again. Thanks Google again. I found someone had the same problem and he fixed it successfully.
I only needed to buy a FOUR-dollar capacitor (yellow one in the pic) and replace the broken one.
