Re: [NTO] Next peculiar computer problem
unplug everything attached to the power supply except the processor fan and
check if anything changes, if it is still the same go and get a new power
supply, the power supplies have a start up resistor that goes high and then
gets hard to start , as a side issue make sure the supply is not full of
dust if you have a vacuum that can be reversed and blow air use that..
THANKYOU DAVE M
----- Original Message -----
From: "loro" <tabbie@...>
Sent: Wednesday, October 06, 2010 11:15 PM
Subject: [NTO] Next peculiar computer problem
> This feels as crazy as the time my car started all by itself and
> drove out on clay field with me and the dog chasing after it in the
> dark. It wasn't funny to call for help and explain that! The looks I
> got when help arrived weren't funny either, considering me and the
> dog were covered in mud from top to toe, having tripped over more
> than once in the wet clay. Well, the dog might willingly have rolled
> around a bit. I didn't. That it was raining heavily didn't improve
> our looks. Neither did me being dressed for a party.
> I soon stopped to tell people about what had happened because of
> their reactions. It took years before I got the explanation, or sort
> of an explanation anyway. Stories of parked cars starting by
> themselves and driving into other cars turned up in the papers. They
> were all of the same make, and it turned they were incumbered with a
> manufacturing fault that made this possible in very damp weather. My
> car was of another make, but it must have had a similar fault. The
> circumstances were right, it had been raining constantly for days. I
> kept the car for many years and it never happen again.
> Now, to the point. I have sort of the reversed problem with my
> computer. It takes ages for it to power on. Note, not to boot, just
> to power on. It started early this summer. Nothing happened when I
> pushed the power button. I had to push it several times for it so
> work. I thought something was wrong with the button itself. I soon
> realized though there was a delay before the computer let itself be
> powered on after the hit the main switch that lets power on to all my
> gear. This waiting time steadily increases. To begin with it was some
> 10 seconds, now it's up in close to 15 minutes. When enough time has
> passed I hear a crack in the speakers that lets me know power is now
> available and I can turn the computer on.
> My computer works flawlessly apart from this. About 3 years old,
> never had a problem.
> I have all my gear plugged into two power bars with switches,
> connected in series. Everything else gets power immediately when I
> hit the switch, and why wouldn't it? Nevertheless I've tries to move
> the PC plug from one bar to another but that of course didn't help.
> Lotta - not crazy, just having interesting and unusual problems. :-)
> Yahoo! Groups Links
- loro wrote:
> It takes ages for it to power on.This is a simple and common problem. The regulation and switching in
your power supply unit is powered from the seondary low-voltage side
creating a hen and egg problem on switching on. There is a big high
resistance resistor from the primary to the secondary side bootstrapping
the process with a very ow current. This resistor ages and becomes
> I have all my gear plugged into two power bars with switches,That proves it. In pure standby aka soft-off that part would stay
powered. It is quite common for power supplies that have worked
faultlessly for years not to restart after a blown fuse or a power
This problem is supposed to be very easy to fix. In practice I have
failed to find that resistor in faulty units and after some time have
given up rsorting to the easy solution of getting an inexpensive (not
outrightly cheap) new one.
- fw7oaks wrote:
> DON'T OPEN THE OLD ONE,Rubbish (sorry). After disconnecting from the mains and waiting a
quarter of an hour (or half a minute more typically) everything in there
is quite safe. Do not change anything and power it up again, unless
fairly sure what you're doing, of course, but paranoia is not warranted
here. I have taken apart and reassembled all my toys from at least age
five onward and I'm not going to stop now.
- Axel Berger wrote:
> the easy solution of getting an inexpensive new one.One point I forgot:
Before discarding the old one, cut off all the power cords. New power
supplies come with far too few hard-drive and CD leads for my needs and
I need to solder additional ones. Those have to come from somewhere.
- --- On Wed, 10/6/10, Axel Berger <Axel-Berger@...> wrote:
> > fw7oaks wrote:While not for a moment suggesting Lotta is an idiot I'd rather play 'safe than sorry' since we are all not as clever, or perhaps lucky, as you.
> >DON'T OPEN THE OLD ONE,
> Rubbish (sorry).
- Seems like we have a consensus here, so off to the computer shop to
by a power supply I go.
> > fw7oaks wrote:I actually am close to an idiot when it comes to hardware, so I
>While not for a moment suggesting Lotta is an idiot I'd rather play
>'safe than sorry'
appreciate all hints and warnings. I realize in hindsight that the
power supply is the likely culprit when the juice doesn't get all the
way, but I wasn't able to figure that our for myself, so you can see
I'm not too experienced with fixing things.
Thanks to all!
- At 13:15 2010-10-06, Lotta wrote:
> I soonI just wanted to say thank you to those who helped and let you know
>realized though there was a delay before the computer let itself be
>powered on after the hit the main switch that lets power on to all my
>gear. This waiting time steadily increases. To begin with it was some
>10 seconds, now it's up in close to 15 minutes.
your suggestion about a bad power supply was right.
I of course procrastinated. At last the time lapse was at least half
an hour. Then I stopped to switch off the main power at night and the
computer powered up quickly every mornings, which let me
procrastinate some more. Yesterday I switched off the main power by
mistake and after that the computer didn't want to power up at all,
no matter how long I waited. So today I did what you told me and
bought a new power supply and everything is dandy.
Happy happy! :-)
- loro wrote:
> which let me procrastinate some more.That's what I had planned for today. But now it's getting dark outside
and I think I'll do it tomorrow instead.