Hi all, Basically I have an HP motherbaord that uses a non-standard heatsink of the processor. It does not have holes around the processor the hold a heatsink like most motherboards - instead, it uses a pin to hold a heatsink like those used on chipsets. I do not have the original heatsink, nor the pin. I do however have another suitably sized heatsink. So now, I just need a pin to hold the heatsink securely. I cannot use a pin from another motherboard, because the one on this one is about 2cm longer. So, any ideas? Thanks.
Could you post a pic of what we are dealing with? You could always epoxy the heat sink on if you don't ever plan on removing it again.
Hi, Here is a pic of the board I am talking about. I did think about using adhesive thermal compound (Akasa does one), but there is a high chance that I will change processor often, because the price of mobile processors is plummeting rapidly. I did try using cable tie, but there is no way I could secure it and apply enough pressure on the processor Thanks.
you tried getting some thick wire and trying to bend it into a similar shape as the other pin? short of contacting the manufacturer and asking for a replacement, thats all i can think of......
They don't sell the heatsink anymore (the pin is part of the heatsink in terms of buying from HP) unfortunately
I had a problem with one of these. One of the possibilities I came up with was to make a cover bracket that was pulled down with tension springs. You could also use bolts if you could fasion a tiny hook on one. Like a big brass bolt with a notch filed in the end. Nuts on the opposite side of the hold-down plate would provde compression. -sounded like a crazy ramble again...
well, you can cut a line through your heatsink, put a metal bar though the line in heatsink, then use cable ties to tie that bar to the loops on the mobo. idea 2 i meant in the ps that the nut must be larger than the hole over the loop lol.
Hi, Thanks for the ideas guys. I did try use a bar (long plate of 5mm wide in my case) and cable tie, unfortunately it didn't apply enough downward pressure to hold the heatsink in place... it just slides about. Zhangmaster12 I don't really understand idea 2? And any idea where can I possibly get a hook with a machine threaded end? I tried B&Q, but those they sell are massive Thanks.
The zip tie would work, you just need something like a spring over the middle of the heatsink. Now that I think about it you could use the notorious HP/Compaq technique... Get the heatsink seated in the thermal paste nice and snug and HOT GLUE the bugger in place. Compaq was notorious for this trick. It made their systems a b*tch to work with.
I think you could make the downwards pressure with the wire retainers if you very slightly bulge them downwards, so that when they're clipped in they are compressed and so try to pull the retaining loops out of the moboard, and in doing so press down on the cpu. Might need some crafty wire bending
Could you replace it with the clip from the chipset (below and to the right) and then use adhesive for that heatsink?
LOL i guess my paint skillz rs till not good enough my suggestion was make a bracket that pushed down on the once tightened. To fasten it in place, get two smallish screws. At the end of the screw, cut a notch, this is where u will hook it onto the mobo loop. Then get a nut thats threaded onto the scew and tightens down on the bracket.
I'm still not clear on the retention mechanism, is it like what is pictured here? That is not a clip system I'm familiar with, but if that's it, then it shares a HSF with Asus' N4L-VM DH board and you can use that to either contact Asus (who also made your board) for a replacement using the N4L-VM DH model number or find a replacement. If it's using push pins, can you post some dimensions for the holes?
get those bolts with hooks on the end + 2 springs and then you can use a metal bar (make holes in it so bolts go through) put springs on (these will do the tension for you) then metal bar with right sized holes in it for bolts, depress down so the spring is under load, then the more you tighten nut the more tension is placed thats my idea + it's a long term thing sure someone can ms paint it for me as i suck with paint
I had exactly this problem with my Northbridge waterblock: I found some small hooks and (roughly) filed the thread off, drilled a hole down the head end of an M5 bolt, and soldered the hooks into the bolts (4 off). I used a lasercutter to cut out an acrylic frame with holes over the screws that fitted over the waterblock. Wingnuts, washers, and small springs on each bolt to put even pressure onto the block - worked absolutely perfectly, a year later still going strong (touch wood!) I initially tried making a small notch in threaded rod, but it was extremely difficult to get these to stay on reliably. Also bending wire to hold it in just doesn't work - too thin and it bends and loses pressure, too thick and it doens't bend and puts too much pressure!
The image shows two loops soldered to the board for HSF retention. But the original post states the need for spring loaded pins. So which is it? For the loops, it looks like the size is close to the standard NB clip size. The cheap way to get one would be to take a clip from a dead MB. Or you could get an off the shelf NB heat sink and use the clip from that, or even the whole heat sink. If it's pins, that is a little harder, but if you can find an old Geforce 4 heat sink kit, that may have pins in it you can use.
