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From: Andy Hewitt on 4 Jun 2010 05:51 smurf <smurf(a)smurf.com> wrote: > Andy Hewitt wrote: > > I got up this morning, and had a desire to strip the MacBook and clean > > out the dust. > > > > Bloody glad I did, there was a carpet's worth of fluff and dust > > bunging up the outlet. There was probably about 20% of the outlet > > left open. > > > > I did some testing with Aperture, and I'd say it's dropped by about > > 10C when under load. > > > > That's been about a year since I last did it, so I reckon six months > > is more like it. > > I have a compressor, i do my dell laptop about once a year. It really makes > the difference in fan noise, must be badly designed cooling mechanism, as it > seems to draw fluff around the vents on the heatsink meaning that the air > sucked in just touches the layer of dust and doesnt cool down. It makes > video etc jerky as the cpu goes into thermal control throttle. Yup, Emily has a Toshiba laptop that is really bad for it, that needs cleaning every couple of months. Poor design though, IMHO, the fans are under the base, and suck up whatever it's placed on. A Google search found it to be a very common issue with this model. -- Andy Hewitt <http://web.me.com/andrewhewitt1/>
From: T i m on 4 Jun 2010 06:14 On Fri, 4 Jun 2010 10:51:56 +0100, thewildrover(a)me.com (Andy Hewitt) wrote: >smurf <smurf(a)smurf.com> wrote: > >> I have a compressor, i do my dell laptop about once a year. It really makes >> the difference in fan noise, must be badly designed cooling mechanism, as it >> seems to draw fluff around the vents on the heatsink meaning that the air >> sucked in just touches the layer of dust and doesnt cool down. It makes >> video etc jerky as the cpu goes into thermal control throttle. > >Yup, Emily has a Toshiba laptop that is really bad for it, that needs >cleaning every couple of months. Poor design though, IMHO, the fans are >under the base, and suck up whatever it's placed on. A Google search >found it to be a very common issue with this model. I 'fixed' a mates sons Tosh lappy the other day by doing similar. Speedfan showed the temps rising pretty fast and after checking to see if there was a BIOS update (some laptops are getting then to set the idle fan speed slight higher or to increase the speed sooner) and there was one (I applied it but it didn't help much) I blew through with the compressor had it running fine again. All the PC's that go through my mates PC shop get a good blow though and you would be surprises how bad some are (like looking at the inside of a Dyson). I think it's HP/Compaq (and probably others) who are having a ruck with nVidia as the video chip can get so hot it partially desolders itself. ;-( http://news.cnet.com/8301-13554_3-10020782-33.html Cheers, T i m
From: Andy Hewitt on 4 Jun 2010 06:36 T i m <news(a)spaced.me.uk> wrote: > On Fri, 4 Jun 2010 10:51:56 +0100, thewildrover(a)me.com (Andy Hewitt) > wrote: > > >smurf <smurf(a)smurf.com> wrote: > > > >> I have a compressor, i do my dell laptop about once a year. It really > >> makes the difference in fan noise, must be badly designed cooling > >> mechanism, as it seems to draw fluff around the vents on the heatsink > >> meaning that the air sucked in just touches the layer of dust and > >> doesnt cool down. It makes video etc jerky as the cpu goes into thermal > >> control throttle. > > > >Yup, Emily has a Toshiba laptop that is really bad for it, that needs > >cleaning every couple of months. Poor design though, IMHO, the fans are > >under the base, and suck up whatever it's placed on. A Google search > >found it to be a very common issue with this model. > > I 'fixed' a mates sons Tosh lappy the other day by doing similar. > Speedfan showed the temps rising pretty fast and after checking to see > if there was a BIOS update (some laptops are getting then to set the > idle fan speed slight higher or to increase the speed sooner) and > there was one (I applied it but it didn't help much) I blew through > with the compressor had it running fine again. I haven't got a blower here, so I dismantle and use a soft brush to clear the vents. > All the PC's that go through my mates PC shop get a good blow though > and you would be surprises how bad some are (like looking at the > inside of a Dyson). No, I wouldn't. I've seen the insides of some machines used in industrial environments, they can get *really* bad. > I think it's HP/Compaq (and probably others) who are having a ruck > with nVidia as the video chip can get so hot it partially desolders > itself. ;-( Crikey. -- Andy Hewitt <http://web.me.com/andrewhewitt1/>
From: T i m on 4 Jun 2010 08:03 On Fri, 4 Jun 2010 11:36:16 +0100, thewildrover(a)me.com (Andy Hewitt) wrote: >> I 'fixed' a mates sons Tosh lappy the other day by doing similar. >> Speedfan showed the temps rising pretty fast and after checking to see >> if there was a BIOS update (some laptops are getting then to set the >> idle fan speed slight higher or to increase the speed sooner) and >> there was one (I applied it but it didn't help much) I blew through >> with the compressor had it running fine again. > >I haven't got a blower here, so I dismantle and use a soft brush to >clear the vents. Hmm. I think those compressed air cans are expensive so (as it's a laptop) something you can take in the car down when you pump your tyres up next. ;-) > >> I think it's HP/Compaq (and probably others) who are having a ruck >> with nVidia as the video chip can get so hot it partially desolders >> itself. ;-( > >Crikey. Yup. I sent one off for a friend because it developed the faults as offered in the link (no WiFi, intermittent video) and it came back all working nicely. A month later it had gone again and the repairer was pretty insistent that it would only fail (again, after his mods) IF the laptop was used in such a way as the air vents were obstructed. I left the owners with very clear understanding re my involvement should it happen again (and it hasn't <touch wood>). I picked up one of those suitcase / oil free 'instant' type compressors quite cheap (from Makro or some such) a while back and it's got just enough ''ooomh' to work as a blower. Whilst it's very light it's also pretty noisy so I make sure it's inside and I'm outside when I'm using it. Cheers, T i m
From: Andy Hewitt on 4 Jun 2010 10:30
T i m <news(a)spaced.me.uk> wrote: > On Fri, 4 Jun 2010 11:36:16 +0100, thewildrover(a)me.com (Andy Hewitt) > wrote: > > > >> I 'fixed' a mates sons Tosh lappy the other day by doing similar. > >> Speedfan showed the temps rising pretty fast and after checking to see > >> if there was a BIOS update (some laptops are getting then to set the > >> idle fan speed slight higher or to increase the speed sooner) and > >> there was one (I applied it but it didn't help much) I blew through > >> with the compressor had it running fine again. > > > >I haven't got a blower here, so I dismantle and use a soft brush to > >clear the vents. > > Hmm. I think those compressed air cans are expensive so (as it's a > laptop) something you can take in the car down when you pump your > tyres up next. ;-) Yes, they are a bit. > >> I think it's HP/Compaq (and probably others) who are having a ruck > >> with nVidia as the video chip can get so hot it partially desolders > >> itself. ;-( > > > >Crikey. > > Yup. I sent one off for a friend because it developed the faults as > offered in the link (no WiFi, intermittent video) and it came back all > working nicely. A month later it had gone again and the repairer was > pretty insistent that it would only fail (again, after his mods) IF > the laptop was used in such a way as the air vents were obstructed. I > left the owners with very clear understanding re my involvement should > it happen again (and it hasn't <touch wood>). > > I picked up one of those suitcase / oil free 'instant' type > compressors quite cheap (from Makro or some such) a while back and > it's got just enough ''ooomh' to work as a blower. Whilst it's very > light it's also pretty noisy so I make sure it's inside and I'm > outside when I'm using it. Hmm, yes, something like that might be handy - or perhaps a modified cheap modelling spray gun perhaps? -- Andy Hewitt <http://web.me.com/andrewhewitt1/> |