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K53TA Second Laptop Fan Mod - Page 2

post #11 of 18
Quote:
Originally Posted by dragonxwas View Post

dude, you can just use usb +5v to power the new fan and just connect the tacho and control pins to the existing fan's connections,

that way it takes power from usb headers and still is controlled by the heat sensors in your laptop..

goodness of both without much modding..

The fan in my laptop is 3-pin. Not PWM.

Also I think two sense inputs would seriously mess with the motherboard.
Edited by vini - 10/12/13 at 8:46am
post #12 of 18
Thread Starter 
@Vini Dragon is right. in fact this is how i ended up controlling the secondary interior fan at first. but the usb lead couldnt power my usb video capture device, as it sucked up too much power and i changed it to run all on fan lead, simply using the tacho and pwm of the primary stock fan.

however if you want to have a plug and play deal then that might not be an option. additionally, what are you going to do/what did you do about the plastic walls seperating the cd-bay and the main mobo compartment? i had to completely remove them for airflow to reach the interior.
The other thing i tried was using a copper heatpipe extension to the drive bay, where i had mounted the second fan permanently but it was poorly implemented and falled short of my expectations and so the pla was scrapped.
pic attached for great prosperity and justice.

and the piece mounted in the interior:

Yeah im crazy about cooling. Im here after all.
post #13 of 18
Thread Starter 
Also I think two sense inputs would seriously mess with the motherboard.[/quote]
for 3-pins it Reeeeeeealllly does. esp on the dell 3000 Pentium 4 fans. I have killed my 3rd pin on them. poor things. ran like high end deltas if i wanted. still can control them using voltage but seeing the rpm made me warm and fuzzy inside.

anyway, If you arent going for a 4-pin-fan-controller-on-device setup i suggest just running the fan leads in paralel, if the controller can handle the load. it almost definitely can if its on a board with an A-Series cpu. Otherwise i would grab that fan controller chip and a 4-pin and set sail.

Have a picture of the stock interior of the pcg-k23 laptop with two 3-pin fans running at different speeds when the need arrises. it can barely keep up with the 2.8ghz pentium 4 but would make any modern laptop processor ice cold. the copper transfer plate is 1.4 inches thick.
post #14 of 18
Thank you for your replies! Today the fan should arrive!
Quote:
Originally Posted by knarf802 View Post

[...] anyway, If you arent going for a 4-pin-fan-controller-on-device setup i suggest just running the fan leads in paralel, if the controller can handle the load. it almost definitely can if its on a board with an A-Series cpu. [...]
"Those motherboard 3-pin fan headers cannot deliver much power. If you attempt to attach more than 1 fan to one of those headers, it will overload the motherboard header and burn it out." (source)
Posts like this scare me. I like my laptop smile.gif
Quote:
Originally Posted by knarf802 View Post

@Vini Dragon is right. in fact this is how i ended up controlling the secondary interior fan at first. but the usb lead couldnt power my usb video capture device, as it sucked up too much power and i changed it to run all on fan lead, simply using the tacho and pwm of the primary stock fan. [...]
I'm actually planning to use the Slimline Sata to power my fan (the connector that previously powered the dvd drive!). It provides 5V and should have sufficient Wattage/Ampere to power the fan.
Quote:
Originally Posted by knarf802 View Post

[...] additionally, what are you going to do/what did you do about the plastic walls seperating the cd-bay and the main mobo compartment? i had to completely remove them for airflow to reach the interior. [...]
I will drill holes into the dvd drive plastic cover to allow fresh outside air to enter the drive bay. The holes will then be covered with some metal grid to prevent pieces from falling inside and some anti dust layer. For the airflow from inside the bay to the motherboard I'll cut the metal at the back (have to make sure I can still attach the screw that holds the bay in place). That gives a nice connection directly to the MOBO, i.e. there is no further plastic separating the two. I'll provide pictures when I have it open again.
Quote:
Originally Posted by knarf802 View Post

[...] The other thing i tried was using a copper heatpipe extension to the drive bay, where i had mounted the second fan permanently but it was poorly implemented and falled short of my expectations and so the pla was scrapped. [...]
Nice pictures!

I was also thinking of that. However to cool my graphics card or cpu from the other side I'd need to use a short ssd (otherwise there is no way I can guide the heat-pipe through the interior). I was looking at something like this: http://www.amazon.com/128GB-mSATA-Mini-Half-SATAIII/dp/B00BMV4B7O/
That is relatively small (memory wise) and expensive though.

The other thing I was considering is another heat-pipe to enhance cooling. I was inspired by this: http://therandomlab.blogspot.it/2012/01/laptop-cooling-mod.html
However I would like to be little intrusive (if possible) and also I'm not sure how I'd need to rearrange the fan-heatpipe assembly (currently there is no space for additional heatpipes).
Edited by vini - 10/14/13 at 2:03am
post #15 of 18
The fan finally arrived. It fits the drive bay exactly the way I was hoping (right next to the slimline sata).

Unfortunately I don't have all my tools here, so I can only continue in about a month time - so excited!

Edit: Also ordered the LTC6992CDCB-4 (that's gonna be a challenge to build a circuit with it - the part is tiny!)
Edited by vini - 10/16/13 at 7:25am
post #16 of 18
Thread Starter 
Some time ago i had an ibm T23 laptop. it had a video out plug and a pentium processor with an s3 supersavage gpu.

i was, and still am, crazy. so i connected a portable dvd player lcd to the video out port and powered the inverter via the slimline dvd power lead.
then i attached it to the back of the lcd with a peice of aluminum to act as a secondary monitor.
i have never doubted the ability of the hdd or cd power supplies in laptops because of this and will continue to trust them.

Btw eventually i killed that T23 because i tried to fit it in a tablet enclosure. rip.

Moral of the story is that Laptop cd drive bays can provide a lot of power. i put two 80gb laptop hardrives on one sata 5v on the k53ta while testing and they ran fine. then i accidentally fractured the sata data lines on the mobo and lost my second sata line. dont do that. its bad.

I ramble, but am excited for this project as well.
also i recomend buying an extra fine tip for your soldering gun if you dont already have one, for use on small chips. my general purpose ones get too hot and are simply too big i find.
post #17 of 18
Any updates?

Hate to intrude, and I guess I'll start a thread...

EDIT: Created a thread here:
http://www.overclock.net/t/1470638/laptop-toshiba-p505-series-cooling-mod-double-capacity-of-stock-on-the-cheap-pwm-mod/0_100



.
Edited by WeAreNotAlone - 3/2/14 at 7:23pm
post #18 of 18
Hey! I totally forgot about this - too many other projects happening =) Thanks for the reminder!

So, here is my setup:


Unfortunately the cooling wasn't as great as I had hoped for (just a few degrees difference). So I decided to put a second SSD into the optical drive bay and build a "cooling box" instead.

Very happy with the result and it's quiet.

So my general feeling is now that a fan in the drive bay is not really working. For everybody thinking about it: Rather invest into something else =)

vini
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