I have a somewhat clunky old desktop PC that was hardly top of the range when I bought it (it runs Vista, though Win7 was just becoming available at the time). A couple of weeks ago it cut out completely in the middle of a session. Fearing the worst, I nevertheless tried the obvious answer first - I changed the fuse in the power supply cord. Bingo, up and running again.
The next morning it wouldn't turn on. Although I wasn't sure how it could blow a fuse while turned off, I changed the fuse again and lo, it worked. I bought more fuses, just in case...
The next morning, same thing. No response to the power button until I changed the fuse. This time, though, I set the 'blown' fuse to one side...
And the following morning, when it once again wouldn't turn on, I replaced the fuse with the previous day's discarded fuse. Wonder of wonders, that worked. Now that's my routine every morning - swapping between two fuses to get the thing to power up. I have tried unplugging the cord from the case, unplugging the cord from the power socket, and 'replacing' the fuse with the exact same fuse I've just taken out, in various combinations. None of these work - although that exact same fuse will start the thing up on the following day.
I used to rig theatre lighting, I've installed a 3-phase power supply, I've dabbled with electronics projects, I have V=I*R tattooed on my brain, but I am utterly baffled as to how this is happening. It is happening - I would have started the thread sooner, but I wanted to be very sure I wasn't fooling myself about some part of it and I've been double-checking this process for a week or so.
What am I missing?
The next morning it wouldn't turn on. Although I wasn't sure how it could blow a fuse while turned off, I changed the fuse again and lo, it worked. I bought more fuses, just in case...
The next morning, same thing. No response to the power button until I changed the fuse. This time, though, I set the 'blown' fuse to one side...
And the following morning, when it once again wouldn't turn on, I replaced the fuse with the previous day's discarded fuse. Wonder of wonders, that worked. Now that's my routine every morning - swapping between two fuses to get the thing to power up. I have tried unplugging the cord from the case, unplugging the cord from the power socket, and 'replacing' the fuse with the exact same fuse I've just taken out, in various combinations. None of these work - although that exact same fuse will start the thing up on the following day.
I used to rig theatre lighting, I've installed a 3-phase power supply, I've dabbled with electronics projects, I have V=I*R tattooed on my brain, but I am utterly baffled as to how this is happening. It is happening - I would have started the thread sooner, but I wanted to be very sure I wasn't fooling myself about some part of it and I've been double-checking this process for a week or so.
What am I missing?
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