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Thread ID: 116775 2011-03-19 18:10:00 Ok Seriously how harmful is it to leave your PC mark1978 (13845) Press F1
Post ID Timestamp Content User
1187561 2011-03-21 05:05:00 higher current is a bit irrelevant if the circuitry is well designed & made.
& cooled

you have the choice of
allways on
heat stress - this may cause some parts to fail prematurely: caps are a good eg
wear & tear - ie bearings in fans & HD's getting noisey & failing

or
turned off each day
constant expansion/contraction from off/on causing failures. eg solder joints ?
daily spinup on start causing failures HD & fan motors

I think this is well said...
mark1978 (13845)
1187562 2011-03-21 05:59:00 Yeah, and everything hinges on "if the circuitry is well designed & made"..... most el-cheapo made-in-China junk is NOT well designed or made. Agent_24 (57)
1187563 2011-03-21 19:02:00 this is the only fact here that isnt based on speculation & old wives tales
:punk :punk :punk

Who here leaves there $2000 TV on 24/7, their car, stereo (some do)
same arguments apply (more or less)
more PC components start to fail when the thing is up & running than at turn on. Its just the symptoms often show at turn-on.

No speculation or old wives tales, rather 25 years in the communications industry and several qualifications relative to servicing electronic devices and I was taught about the dangers of "inrush" current.

Another point I didn't bother with is sometimes devices slowly go faulty while in use but don't actually fail until turned off and later back on. Older telephone exchanges for example sometimes experience failures after a power outage - usually due to capacitors that have "dried out"

As for the TV, if you turn it of with the remote it goes in to low power standby and is not actually off, this allows faster startup and protects key components from the stress of power cycling, it is designed that way.

Turning a device on and off IS more stressful that leaving it on. However the people who design them are aware of this and make allowances. As I said it should make no important difference to the longevity in practice.
dugimodo (138)
1187564 2011-03-22 05:03:00 I think this is a very interesting subject!!

Hey Guys, the PC has been off all day, came home, its quite warm in the room, turned the PC on and no noise coming from the fans! I KNOW for a fact in the morning when I turn it on again one of the fans will make a noise... I might Google it as well... Will try to find out which fan is making this noise though
mark1978 (13845)
1187565 2011-03-22 05:04:00 I believe it happens because the lubricant in the fans gums up in the cold overnight and won't return to proper state until it's heated up when the fan has been going for a while.

Or as you said, it's been in a warm room all day.
Agent_24 (57)
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