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ezhik
Regular contributor
Posts: 69
Joined: Sat Dec 16, 2006 11:43 am

PSU area fan

Post by ezhik »

The 5800 I've had for a few years has two fans, an 80mm in the area over the MB and blowing up and out, and a 50mm doing the same above the PSU.

I was never convinced the one above the PSU did a great deal as it's blowing up against the cover and air can only flow through the slots. The 5800t I've just got was going to get the fan mod, but I did the PSU one differently this time, and I think its more successful.

It's the caps that we want to cool, so I 'blu tacked' tacked it vertically alongside the caps this time, blowing straight onto them, like so...

Image

I took before and after temps with a digital laser pointing thermometer on the top of the caps, before temps were of the order of 38 to 42 degrees, and after is 25 to 28 degrees.

It isn't the most elegant way to mount a fan, but it's doing a good job, and easily tweaked if the need arises. Main thing is the caps are cooler by a good margin.

I think the trick to better cooling is to get the air moving, and not to be too obsessed with trying to get it out of the case, it will do that itself it there is enough movement inside and enough vent holes.

Anyway, we all know cooler caps equals longer life PSU, voltage stability, which in turn keeps everything else running in spec for longer.
TF5800, TS On, F/W: MS6 Recommended F/W 12/9/2009 -Sy
TAPs: EIT Sub v0.6; EPG2MEI v0.96; QuickJump 1.72; TAP Commander 1.34; Font Manager 1.0d; SecCache (UK) v0.4; Extend v1.7; MyStuff 6.3; MHEG On/Off A3;
TF5800t, TS On, F/W: MS6 Recommended F/W 12/9/2009 +EvEzPeUUu
TAPs: EIT Sub v0.6; EPG2MEI v0.96; QuickJump 1.72; TAP Commander 1.34; Font Manager 1.0d; SecCache (UK) v0.4; Extend v1.7; MyStuff 6.3; MHEG On/Off A3; (FastScanGUI v0.6b);
Doct0r
Frequent contributor
Posts: 353
Joined: Tue Jun 01, 2010 9:47 pm
Location: Birmingham

Post by Doct0r »

Was that checking with the lid off? With the lid on the temperatures might rise slightly, but shouldn't get near the 38C to 42C you initially saw.

Do you still use an 80mm fan over the MB? What's the HDD temp with this new configuration?
TF5810, , F/W: MS6 Recommended F/W 12/9/2009 +R2UUuVb
TAPs: EPG2MEI v0.96; MyStuff 6.4; Extend v1.7; MyInfo B5.5; SecCache (UK) v0.4; Font Manager 1.0d; EIT Sub (Game) v0.6;
Sig generated by MyInfo on 17/5/11
?
ezhik
Regular contributor
Posts: 69
Joined: Sat Dec 16, 2006 11:43 am

Post by ezhik »

Doct0r wrote:Was that checking with the lid off? With the lid on the temperatures might rise slightly, but shouldn't get near the 38C to 42C you initially saw.

Do you still use an 80mm fan over the MB? What's the HDD temp with this new configuration?
Those temps with lid on, though its just sitting on my desk not enclosed.

I've got a 80mm fan in place but haven't got around to wiring it in as I need to split the 12v supply off to it. This Toppy came with a WD 250Gb IDE HDD, not the coolest of drives, and won't be staying. I'll fit a cool running SATA 1Tb drive soon, so I've not put any effort bothering about the current drive. However, its been on several hours now with the lid on, TS on and a quick check shows it at 35 degrees on the case at the hottest point.

The case feels nicely cool to the touch over the caps area though.
TF5800, TS On, F/W: MS6 Recommended F/W 12/9/2009 -Sy
TAPs: EIT Sub v0.6; EPG2MEI v0.96; QuickJump 1.72; TAP Commander 1.34; Font Manager 1.0d; SecCache (UK) v0.4; Extend v1.7; MyStuff 6.3; MHEG On/Off A3;
TF5800t, TS On, F/W: MS6 Recommended F/W 12/9/2009 +EvEzPeUUu
TAPs: EIT Sub v0.6; EPG2MEI v0.96; QuickJump 1.72; TAP Commander 1.34; Font Manager 1.0d; SecCache (UK) v0.4; Extend v1.7; MyStuff 6.3; MHEG On/Off A3; (FastScanGUI v0.6b);
alan_m
Frequent contributor
Posts: 3551
Joined: Wed Oct 18, 2006 12:11 am

Re: PSU area fan

Post by alan_m »

ezhik wrote: Anyway, we all know cooler caps equals longer life PSU, voltage stability, which in turn keeps everything else running in spec for longer.
With the lid on wouldn't you just be recirculating the ambient air which will get hotter as the disk warms up? Be careful that your blutac method is not covering any of the other passive components on the board. Even a 0.25W resistor can overheat and fail if given its own blutac insulation blanket.

Possibly the better way of checking the temperature inside the box is to use the HDD Info TAP and monitor the temperature of the hard disk after half an hour operation with the lid fitted.

I once ran two fans but with changing to a larger green drive I now only run a single 80mm fan in one box and a slim 60mm fan in the other. The temperatures of the current HDDs are 20C below that of the original 160G disk that first persuaded me that the box needed a fan. Furthermore it doesn't need the fans to be running very fast to reduce the temperature significantly.
Ex Toppy 5800 user - now migrated to Xtrend ET10000 Enigma 2 box with 2 terrestrial and 2 satellite tuners. Second box Zgemma H9S (Enigma 2, satellite)
alan_m
Frequent contributor
Posts: 3551
Joined: Wed Oct 18, 2006 12:11 am

Post by alan_m »

Doct0r wrote:Was that checking with the lid off? With the lid on the temperatures might rise slightly, but shouldn't get near the 38C to 42C you initially saw.
I can believe those figures. I once had a 40mm over the PSU and the air temperature on the outlet was around 36C (ambient 22C).
Ex Toppy 5800 user - now migrated to Xtrend ET10000 Enigma 2 box with 2 terrestrial and 2 satellite tuners. Second box Zgemma H9S (Enigma 2, satellite)
Doct0r
Frequent contributor
Posts: 353
Joined: Tue Jun 01, 2010 9:47 pm
Location: Birmingham

Post by Doct0r »

I still run the original Samsung 160GB drives in my boxes with 2 fans, 1x80mm to the right of the HDD and a 45mm fan above the capacitors. Both blow air in and HDD temp doesn't exceed 31C.

Had to add extra vents to the 5810 to add the fans. This mod reduced the temp by around 15C to match the 5800.

I know some will say the fans should blow the air out but continuous recordings on both tuners and playback over 6 hours or more doesn't raise the temperature and the top of the boxes are cool to the touch.

Not sure I'd use blu-tack, I'd want something more secure just in case the fan moves and causes damage.
TF5810, , F/W: MS6 Recommended F/W 12/9/2009 +R2UUuVb
TAPs: EPG2MEI v0.96; MyStuff 6.4; Extend v1.7; MyInfo B5.5; SecCache (UK) v0.4; Font Manager 1.0d; EIT Sub (Game) v0.6;
Sig generated by MyInfo on 17/5/11
?
ezhik
Regular contributor
Posts: 69
Joined: Sat Dec 16, 2006 11:43 am

Post by ezhik »

Doct0r wrote:Not sure I'd use blu-tack, I'd want something more secure just in case the fan moves and causes damage.
You are right, it was a quick way to test the theory. I'll think of a more elegant way to hold it in place!
TF5800, TS On, F/W: MS6 Recommended F/W 12/9/2009 -Sy
TAPs: EIT Sub v0.6; EPG2MEI v0.96; QuickJump 1.72; TAP Commander 1.34; Font Manager 1.0d; SecCache (UK) v0.4; Extend v1.7; MyStuff 6.3; MHEG On/Off A3;
TF5800t, TS On, F/W: MS6 Recommended F/W 12/9/2009 +EvEzPeUUu
TAPs: EIT Sub v0.6; EPG2MEI v0.96; QuickJump 1.72; TAP Commander 1.34; Font Manager 1.0d; SecCache (UK) v0.4; Extend v1.7; MyStuff 6.3; MHEG On/Off A3; (FastScanGUI v0.6b);
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